JPH03253827A - Camera with zoom lens - Google Patents

Abstract

PURPOSE:To easily and quickly move a lens to a zoom end part by forcibly positioning the lens to the zoom end part according to the position of the lens. CONSTITUTION:At a telephoto movement processing time, '4' is set to a memory (MVPOS) and the content of the MVPOS is compared with the present content of a lens position code (POS). Since the content of the MVPOS is always larger than the present content of the POS, a zoom motor is rotated forward and the detection processing of the lens position and the display of a focal distance are performed. Then, the contents of the MVPOS and the POS are compared, next. Such processing is repeated until the contents of the MVPOS and the POS coincide with each other. Then, when they coincide, the brake processing of the zoom motor is performed and the processing is returned to the main processing. Therefore, the lens is forcibly moved toward a telephoto end by the telephoto movement processing. Thus, a zoom lever is easily and quickly positioned at the zoom end part.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a camera with a zoom lens having an operation means for specifying the zoom direction of the lens.

[Prior Art] Conventionally, in cameras with zoom lenses, it has been possible to stop the lens at a desired zoom position and take pictures by operating a zoom lever, which is an operating means for specifying the zoom direction of the lens. What has been done is known.

[Problems to be Solved by the Invention] However, in conventional cameras with zoom lenses, if you want to position the lens at the zoom end on the wide side, you have to keep driving the zoom lever in the wide direction. If you want to position the lens at the zoom end on the telephoto side, you have to keep driving the zoom lens in the telephoto direction, and when you want to position the zoom lens at the zoom end, operating the zoom lever is cumbersome. There is a problem.

[Means for Solving the Problem] In order to achieve the above-mentioned object, the camera with a zoom lens according to the present invention, in addition to the operation means for specifying the zoom direction of the lens, adjusts the zoom direction of the lens according to the position of the lens. The camera is characterized in that it is provided with a forced movement operation means for forcibly positioning it at the zoom end.

[Function] According to the camera with a zoom lens according to the present invention, a forced movement operation means is provided to forcibly position the lens at the zoom end according to the position of the lens.
By operating this forced movement operation means 2 times, the lens is forcibly driven toward the zoom end, and the lens can be easily and quickly positioned at the zoom end.

[Example] The present invention will be described below based on the drawings. 1 to 43 show an embodiment of an exposure control device for a camera according to the present invention.

First, the appearance of the camera will be explained according to FIGS. 1 to 3.

In FIG. 1, 1 indicates a camera body, and 2.3 indicates a zoom lens barrel. As shown in Fig. 2, the front side of the camera body l is provided with a distance measuring unit 4, a finder window 5, a zoom type strobe 6, a light receiving element (CdS), and a self-timer lamp 7. Back cover 8,
Mode button 9, select button 10, drive button 11, zoom lever 12, power button 13, green lamp 1
4. A red lamp 15 and a back cover release lever 16 are provided, and the back cover 8 is opened when the back cover release lever 16 is operated in the direction of the arrow from its upward stop position to its downward stop position. When the back cover 8 is open, the back cover release lever 16 is at the lowering stop position, and when the back cover 8 is closed, the back cover release lever 16 is raised.

At the top of the camera body 1, as shown in FIG. 1, a shutter button 17, a TV button 18, and an LCD panel 19 are provided. Note that the TW button 18 is a button used to select and designate two positions located at opposite ends of the zoom lens.

The zoom lever 12 is operated from the neutral position in the direction of the arrow indicating the wide side and the telephoto side. This zoom lever 12 is also used to change the exposure method and photographing method, which will be described later, but this will be explained together when the functions of the mode button 9 and drive button 11 are explained.

Next, the circuit configuration of the above-mentioned camera will be explained based on FIG. 4.

The main CPU is the center of this control circuit. A sub-CPU that performs shutter-related processing is connected to this main CPU via a drive rc.

- The main CPU performs the following controls based on input from information input means such as switches.

(1) Control the zoom motor and wind motor via each motor drive circuit.

(2) Controls lighting and blinking of the green lamp 14 for distance measurement related displays, the red lamp 15 for flash related displays, and the self-timer lamp 7 for self-timer related displays.

(3) Control the display on the LCD panel 19.

(4) Perform charging control of the strobe circuit.

As a means of inputting information to the main CPU,
There are the following:

(1) A main switch that is turned on by operating the power button 13. When this main switch is in the power-on/stop state, pressing the power button 13 once will turn on the power, and even in the power-on state, pressing the power button 13 will turn on the main switch and stop powering on. .

(2> Photometering switch that is turned on by pressing the shutter button 17 one step.

(3) A release switch that is turned on by pressing the shutter button 17 in two steps.

(4> Move the zoom lever 12 from the neutral position to the telephoto side (arrow r
A teleswitch that turns on by pushing it in one direction.

(5) A wide switch that is turned on by tilting the zoom lever 12 from the neutral position to the wide side (in the direction of arrow r2).

(6) A zoom mode switch used to switch the operating state of the zoom lens between step operation and continuous operation. Details of the step motion and continuous motion will be described later.

(7) A mode switch that is turned on by pressing the mode button 9. Note that the mode button 9 is used to set the exposure method.

(8) A drive switch that is turned on by pressing the drive button 11. The drive button 11 is used to change the shooting method.

(9) A select switch that is turned on by pressing the select button 10. The select button 10 is used to select the number of self-timer images, interval start time, 6-interval time, etc. of the photographing method.

(10) Zoom code ZCO1zci, ZC2° This zoom code is used for controlling the position of the lens, displaying the focal length, etc., and the details will be described later.

(11) Press down on the back cover release lever 16 to turn it off.
The back cover switch turns ON when the back cover 8 is closed and the lever is raised to the lock position.

(12) Wind pulse switch for detecting film running. This will also be discussed later.

Next, details of the zoom mode switch, wide switch, and tele switch will be explained.

The zoom-related switch is composed of a brush provided on the zoom lever and a contact point, and although the positional relationship of each contact point is shown in FIG. 5, the switch itself will be explained. The wide switch is ON when the camera is on the wide side, and the tele switch is ON when it is on the telephoto side.

The wide switch and tele switch are OFF when the zoom lever is in the neutral position. The zoom mode switch is ON from the middle of the wide switch through the neutral position to the middle of the tele switch. 7- This zoom mode switch is OFF at the wide side from the middle of the wide switch and at the tele side from the middle of the tele switch.

Step operation and continuous operation are distinguished by 0N10FF of this zoom mode switch. This zoom mode switch, tele switch, and wide switch are turned on and off.
Depending on the combination of FFs, five types of information can be input to the main CPU. This information is used for zoom operations or for shooting/exposure method settings. For example, during a zoom operation, information on forward/reverse rotation of the zoom motor, switching information between step operation and continuous operation is input to the main CPU.

On the other hand, the sub CPU controls the distance measurement unit using the infrared LED and PSD via the autofocus IC, and also collects distance measurement data based on the output of the autofocus IC and photometry data based on the output of the CdS. Main C
Transfer to PU.

The drive IC controls the shutter circuit and outputs a trigger signal to the strobe circuit based on commands from the sub CPU.

B- Next, the functions of the mode button 9 and drive button 11 will be explained.

The mode button 9 has the function of setting an exposure method.

As shown in FIG. 6, three types of exposure methods are available: auto (automatic strobe flash mode), strobe ON (strobe forced flash mode), and strobe OFF (strobe flash prohibition mode). In Figure 6,
Display marks corresponding to each exposure method are shown, but in the case of auto, there is no display. In addition, one counter EXPMODE (hereinafter, EXPMO
(abbreviated as DE) is prepared, EXPMODErOH
J4. t oh )', rlJ hash oh oh ON,
r2H” corresponds to strobe OFF. When the mode button 9 is operated, the contents of EXPMODE are changed.

The drive button 11 has a function of setting a shooting method. As shown in FIG. 7, five types of shooting methods are prepared here: single-frame shooting, self-timer, self-TV, interval, and mid-rewind. The display -9= mark corresponding to each photographing method is also shown in FIG. 7, but is not displayed when single frame photographing is performed. In addition, counter DR is available depending on the shooting method.
IVMODE (hereinafter abbreviated as DRIVMODE) is prepared, and this (D DRIVMODEr 0OOOB
J is for single-frame shooting, “0001BJ is for self-timer,
r 0OIOB J is self TV.

rrollBJ is interval, rlX X X BJ
supports rewinding in the middle. In addition, ××× is “0”,
It means that either "1" is acceptable, and self-TV will be described later.

When the drive button 11 is operated, the DRIVMODE is changed. This EXPMOD is displayed on the LCD panel 19.
Display is performed based on E and DRIVMODE, and control during photographing is also performed based on these. Note that if the drive button is held down for 3 seconds or more, the shooting method changes to a mid-rewind mode.

In the interval mode, the interval start time and interval time can be set.

Here, the interval start time is a time for specifying how many minutes, seconds, or hours must pass from the current point in time when the interval mode is set to enter the interval mode. Further, the interval time is the time from one photograph to the next photograph. In the self-timer mode, five types of self-timer number of shots are available.

Next, the display contents of the LCD panel 19 will be explained with reference to FIG. Mode button 9, drive button 1
The exposure method mark and photographing method mark according to No. 1 are displayed in each display area according to their respective aspects, and since the meaning of each mark has already been described, the remaining marks will be explained.

In FIG. 8, rlNTl means that the imaging method is interval, and "-" below it is displayed when setting the interval time.

"S" to the left of rlNTJ is displayed when setting the interval start time. At the same time, "-season" under "S" is also displayed. 20 is a battery mark, 21.22 is a segment display area, and 21 is a display area that displays focal length, interval start time, and interval time. !IIJ is a unit mark that lights up when displaying the focal length and means millimeters, "S" means seconds, 11 "m" means minutes, and "h" means hours. It lights up sometimes. Here, [m]
and [mml share a segment.

These rs, m, h, mm J are selected according to each aspect.

The display area 22 is for displaying the number of shots, and "EX" is a number mark indicating the unit of shooting. The battery mark 20 lights up when the battery is exhausted.

FIG. 9 is an explanatory diagram of the zoom code. The zoom code plate is constructed as a part of the zoom lens barrel, and has a pattern as shown in FIG. The hatched portion of the zoom code plate is configured as a contact point, and the four brushes come into contact with each other. For brushes located at GND, the brush itself is grounded to GND,
It works to drop the zoom code board to GND. Signals are taken out from other brushes, and ZCOSZCI and ZC2 take a signal of "0" when the brushes are in contact, and a signal of "1" when the brushes are not in contact. In this specification, 3-bit information detected from the conduction relationship between these terminals is defined as a zoom code. In addition, in this control camera, a lens position code pos (hereinafter referred to as PO5) and a focal length code DIV (hereinafter referred to as DIv) are determined based on the zoom code for zooming control.

PO5 here means that the lens is in the retracted position (P
O5-0), be in the lens stop prohibited range (POS-1) between the wide end and the storage position, and be at the wide end (PO8-2>
, at the telephoto end (PO8-4), and in the zoom range between the wide end and the telephoto end (PO5-3).The focal length code DIV is The area is divided into 21 parts and used to detect the lens position. DIV in the figure is a hexadecimal number.

In addition, in FIG. 9, the wide end of PO3-2 is also expressed as having a constant width, but this portion actually has no width. That is, PO5-2 occurs only when the lens is set to the wide end. P.O.
The same applies to the telephoto end of 9-4. ZC which is a contact point
2 is used for wide end and telephoto end detection.

On the other hand, in the zoom range, as mentioned above, 21 divisions are made corresponding to the focal length of the photographing lens, but 1320 stages must be divided by 2 bits. Therefore, in this example, a relative code structure is adopted in which zoom codes 5, 4, and 6.7 are repeatedly made to correspond to DIV-IH to 14H.

With such a configuration, it is not possible to identify a single focal length code that corresponds to the focal length of the lens from only statically detected zoom codes. The focal length code stored in the memory is sequentially rewritten while detecting the current focal length code to determine the current focal length code. Note that the focal length is displayed from 38 mm to 90 mm, and corresponds to each DIV as shown in FIG. 9.

In addition, in Fig. 9, the stop position of the lens when the lens is moved in a step operation state is indicated by "・", but the lens stop position during this step operation is different from the mechanical This position was chosen so that the focal length display would not change when removing backlash.

That is, in the camera of this embodiment, the zoom motor is once rotated forward and then stopped in order to eliminate backlash in the mechanical system when the zoom motor is stopped in reverse rotation, so the focal length is displayed as a short focal length during forward rotation. This is because if the focal length is changed from the long focal length side, the operator may feel uncomfortable.

The movement of the zoom lens will be explained with reference to FIG.

■When the lens is in the stored state and the power is turned on, the zoom motor rotates forward and the lens moves toward the wide end as shown by arrow A.

- When the power is turned on and off while the lens is in the zoom range, the zoom motor is reversed and the lens moves as shown by arrow B, thereby retracting the lens. In this case, there is no need to remove backlash because no photograph is taken.

For example, when the wide end is selected by operating the TW button 1B, the zoom motor is reversed and the zoom lens is driven, as shown by arrow C, until the wide end is exceeded. The zoom lens is driven 50 m5 in the same direction even after the wide end is detected. Then, after 50 m5 has elapsed, the zoom motor is rotated forward, and the zoom lens is stopped at the wide end.

- When the teleswitch is turned on, in the case of continuous zoom, the lens is driven as shown by the arrow until the teleswitch is turned off. In the case of step zoom, the zoom motor is rotated forward and stopped at the next stop position as shown by arrow E.

(2) When the wide switch is turned on, the zoom motor is driven in the case of continuous operation, and the zoom lens is further driven in the same direction by 70 m5 from the time when the wide switch is turned off, as shown by arrow F. Then, the zoom motor is rotated forward for 50 m5 and then stopped.

This eliminates mechanical backlash.

In the case of step zooming, backlash is removed by rotating the motor in reverse for 50a+s from the step zoom stop position as shown by arrow G, then rotating forward, and returning to the step zoom stop position again.

(2) For example, when the telephoto end is selected by operating the TW button 18, the zoom motor is rotated forward as shown by arrow H, and the movement of the lens is stopped 16- at the telephoto end.

Next, a wind pulse switch for detecting the running state of the film will be explained.

The wind pulse switch, as shown in Figure 11,
It consists of a signal sprocket with a protrusion around the periphery that engages with the perforations of the film and a triangular prism-shaped contact piece pressing part formed on the shaft, and a contact part consisting of a movable contact piece and a fixed contact piece.

The movable contact piece is in elastic contact with the contact piece pressing portion of the signal sprocket, is intermittently displaced to the fixed contact side as the signal sprocket rotates, and repeatedly comes into contact with and separates from the fixed contact piece.

The wind pulse switch inputs a signal of 0 to the main CPU when each contact piece comes into contact and is in a conductive state (ON), and a signal of 1 when the contact pieces are in a non-conductive state (OFF).

Next, process the signal input of the wind pulse switch in the first step.
This will be explained based on FIG.

When processing a signal from a switch that outputs an 0N10FF signal by repeating this type of conduction and non-conduction, there is a possibility that chattering may occur when switching the signal. Conventionally, in order to prevent the influence of such chattering, control has been used in which the signal is determined to be correct if the same signal continues for a certain period of time, rather than making a determination based on the signal obtained instantaneously.

In addition to the above control, this camera does not perform signal detection in areas where the signal theoretically does not change between one signal change and the next, making it less susceptible to chattering. . Specifically, the wind pulse signal is
0N10FF is repeated at a constant cycle, and the interval between changes is designed to be 12m5 or more. Therefore, since the signal does not change at least within 10 m5 after the signal changes, signal detection is stopped during this time. Such processing can further reduce the influence of chattering.

Next, the operation of the above camera will be explained based on a flowchart.

- (Reset processing) When the battery is installed, the reset of the main CPU of the camera is canceled and the program is executed from the reset processing shown in $13@J.

First, all memories are initialized (step RTI). Next, all switch signals are input (
Step RT2). Then, the exposure and shooting method initialization processing shown in FIG. 14 is executed, and EXPMODE, DR
IVEMODE is initialized (step RT3). Through this initialization, each memory has the contents of the photographing method, single-frame photographing, exposure method, number of automatic self-timer shots of 1, interval start time of 10 seconds, and interval time of 10 seconds.

Next, the zoom initialization process shown in FIG. 15 is executed (step RT4).

In this camera, the zoom code is a relative code as described above, so if the battery is removed and the memory contents are discarded, the camera itself will no longer be able to determine the current position of the photographic lens. In such a case, the zoom initialization process is performed to temporarily return the photographing lens to the storage position, which is the absolute code.

19- In the zoom initialization process, a zoom code input process is performed (step ZMI), and it is determined whether the zoom code is "2" (step ZM2).

When the zoom code is "2", the lens is already in the storage position, but to confirm that the reset has been completed, the zoom motor is rotated forward, waits for 100mtz (steps ZM3.2M4), and then processes in step ZM5. Execute. If the zoom code is not "2", the process moves directly to step ZM5.

Next, in step ZMS, the zoom motor is reversed, and in step ZM6.2M7, while inputting the zoom code, it is determined whether the zoom code is "2".

When it is determined that the zoom code is "2" in step ZM7, the process moves to step ZM8, where zoom motor brake processing is executed, and then POS is initialized (step ZM9), and reset processing is performed. Return to.

Through the above process, the lens is set to the POS-O storage position, the reset process is completed, and control proceeds to the lock 20 process.

- (Lock processing) Figure 16 shows the lock processing. This processing is performed when the camera is switched from the shooting standby state to the storage state by operating the main switch or by automatic storage described later. This is a wait process.

Here, it is assumed that the power is turned on and off by operating the main switch, a film is set in the camera, the back cover 8 is closed, and a predetermined number of films are being loaded. In addition, we will begin the explanation by assuming that the camera is in a state where the lens is stored.

First, a 30 minute timer is started (step LO
I). This 30-minute timer is set immediately before the lens is automatically stored in the locked position using the MVPO function described below. 3゜EXPMO
DElDRIVMODE (7) Used to clear the contents after 30 minutes. This is because if the lens is automatically retracted and no operation is performed on the camera even after 30 minutes have passed, it can be assumed that the lens has simply been retracted.

Next, turn off all displays on the LCD (step LO2)
.

And the flag? Determine whether FLEXZ is "0" or "IJ" (step LO3).Flag?FLE
XZ is used to determine whether or not a film is attached.

flag? FLEXZ is "0" when no film is set in the camera. Here, we assume that the film is set correctly, so is there a flag? FLEXZ is “
1”.

flag? When FLEXZ is set to “1”,
Film number display processing is executed (step LO4)
. In the film number display process, as shown in FIG. 17, it is determined whether the film number counter is equal to or greater than "10" (step FPI). When the number of films counter is ``10'' or more, the number of films is displayed using the display area of ``10'' and the display area of ``1'' (step FP2).

When the film number counter is less than "10", the number of films is displayed in the "10" display area.

Then, the previous state of the main switch (power button) is stored in memory (step LO5).

22- Also, a flag? When FLEXZ is "o", step LO5 is directly executed. flag? FLEXZ is “1”
When the film is set in the camera, step LO4 is always executed, so when the film is set in the camera,
Even if the power is turned on or stopped, the number of films is displayed on the LCD panel.

Next, the current signals of the main switch and back cover switch are input (step L06). Then, it is determined whether the 30 minute timer has timed up (step LO7).
). When the 30 minute timer times up, is there a flag?
Set AUTORET to “O” (step LO8
). This flag? AUTORET is used to determine whether to return the camera to the operating state before the lens was automatically retracted if the power button is pressed within 30 minutes after the lens is automatically retracted.

Then, it is determined whether or not loading of the film has been completed (step LO9). Is this a flag? L
DEND is used. flag? LDEND is set to "1" when film loading is completed, and is set to "0" when film loading is not completed. That is, it is set to "0" when the back cover switch is OFF. flag? LDE
When ND is "O", the process moves to step LO17, but since the explanation here assumes that film loading has ended, the flag? LDEND is set to "l" and the process moves to step Loll.

In step Roll, it is determined whether the camera back switch is ON or OFF.

Here, the camera back switch is ON, so step L
Move to O12. In step L012, it is determined whether there has been a change in the main switch. This determination is made by comparing the previous contents of the main switch stored in the memory with the contents of the main switch input this time. If the previous contents of the main switch and the contents of the main switch input this time are the same,
Assuming that there is no change in the main switch, a low current consumption mode process in which the process is put on standby every 500 m5 is executed (step LO13), and the process returns to step LO5. Therefore, the camera CPU continues to operate in the low current consumption mode.

24- Next, assume that the back cover 8 is opened during operation in this low current consumption mode. When the back cover 8 is opened, the back cover switch turns OFF.
Therefore, in step Roll, it is determined that the camera back switch is OFF. When this back cover switch is turned off, the process moves to step LO14.

In steps LO14 and LO15, the above-mentioned exposure and photographing method initialization processing and winder system initialization processing are performed.

In this initialization process of the winder system, as shown in FIG. LDEND17 lag? FLEXZ1 flag TREWEND is set to "0" (step W
SI, WS2, WS3). Further, the film number counter is also cleared, and the LCD panel does not display the number of films (steps WS4, WSS).

Next, in step LO16, the flag? AUTORET
is set to "0" and the process moves to step LO12.

If you leave the back cover open, will it turn into a flag? L.D.
Since END is "0", in step LO9,
flag? It is determined that LDEND is "0", and the process moves to step LO17. In step L017, it is determined again whether the back 5 lid switch is ON or OFF.

If the back cover 8 remains open, the CPU operates in a low current consumption mode in this state. Here, when the back cover 8 is closed, it is determined in step LO17 that the back cover switch is ON, and the loading process (step LO18) shown in FIG. 19 is executed.

Next, it is assumed that the CPU continues to operate in the low current consumption mode, and that the power button 13 is operated at this time. Then, in step LO12, it is determined that there has been a change in the main switch, and the process moves to step LO19. In step LO19, it is determined whether the main switch has been turned on or opened.

Press the power button 13 to turn the main switch from OFF to O.
Since the main switch is determined to be "ON" in step L019, the process proceeds to step LO20. Flag at step LO20? AUTORET is “
It is determined whether it is Oj or "1". flag? A.U.
TORET is set to 1 when the camera is left unattended for 3 minutes and automatically stored in the main processing described later.

26- Here, it is assumed that the power was turned on and off by the main switch last time, and the flag? Assume that AUTORET is "o". flag? If AUTORET is “0”,
Exposure method/photography method initialization processing is executed in step LO21, and then wide movement 1 processing is executed in step LO22. Then, the process moves to main processing. Note that the processing of wide movement 1 will be described later.

flag? If AUTORET is 1, that is, the power button 13 is pressed before 30 minutes have passed after automatic storage. Then, in step LO12, the previous memory of the main switch and the contents of the current main switch are compared, and it is determined that there has been a change in the main switch, and the process moves to step LO19, where it is determined whether the main switch is ON or OFF. It is determined whether Since the main switch is turned on by pressing the power button 13, the process moves to step LO20 and the flag? AUTORET is “1”
” or “0”. flag? A.U.
TORET is "l" after 3 minutes and before 30 minutes.
Since it remains set to 27-, in step LO20, the flag ? It is determined that AUTORET is "1", and the processes from step 9023 to step LO26 are executed. Flag in step L023? AUTORET is set to "0". In step LO24, exposure method display processing is executed. In step LO25, a photographing method display process is executed. In step LO26, lens automatic return processing is executed. Through the processing from step 9023 to step LO26,
The camera returns to the state immediately before the lens was automatically retracted.

- (Loading process) In the loading process, as shown in FIG. 19, the exposure method is set to auto and the shooting method is set to single frame shooting (step LDI).Interval start time,
Interval time initialization is performed and each time is set to 10 seconds (step LD2).

Next, the flag that means loading is finished? LDEND
is set to "1" (step LD3). and,
The wind pulse counter is set to "17" (step LD4). The wind pulse counter is used to feed a predetermined number of sheets of film. Next, the wind pulse count process described in Section 8 is executed (step LD5). If this wind pulse counting process is completed normally, step LD of loading process is completed.
The processes of steps 6 to LD8 are executed, but if the wind pulse count process is abnormal, the processes of steps LD6 to LD8 of the loading process are not executed.

Here, it is assumed that the wind pulse count process is performed normally. Then, in step LD6, the film number counter is set to "1", the number of film display processing is executed, and the flag ? indicating that film is loaded is set. FL
EXZ is set to "1" (step LD7, LD
8). Then, the process returns to lock processing. Note that an abnormality in the wind pulse count process means a loading error. In this case, you will need to open the back cover 8 again, set the film again, and close the back cover 8 again.

(Wind pulse counting process) FIG. 20 is a flowchart of the wind pulse 9 counting process called in the above-mentioned loading process and the later-described wind process. By detecting this, the amount of travel of the film is detected.

When this process starts, in step WPI, a flag indicating the start of pulse counting? WPCST is cleared and the wind motor is rotated forward in step WP2.

The loop of steps WP3 to WP12 is a process of determining whether the wind pulse count start position appears within 1.5 seconds while determining the wind pulse wp and the state of the camera back switch.

When the back cover switch is ON, is there a flag immediately after starting? Since WPC8T is 0, step W
Proceeding from P8 to step WP9, if the wind pulse is 1, the flag is changed in step WPI0.11,
1. After waiting for Oms, before time-up, step WP
Return to 4. Loading and winding end after the wind pulse becomes 1, so if the previous process ended normally, the above path 30- is followed. However, it is possible that the wind pulse is stopped at 0 for some reason, so in this case, step WPIO1WPII is skipped and the switch input is repeated at a faster cycle to wait for the wind pulse to become 1. wait.

flag? After WPCST is set to 1, step WP
8, the process branches to step WP13, and it is determined whether or not there is a change in the wind pulse.

If there is no change in the wind pulse, step WP4
to form a loop. If the 1.5 second timer times up without any change, the motor is stopped in step WP7, a return value "abort" is set, and the process returns. Further, when the back cover is opened, the winder system initialization process shown in FIG. 18 is executed, and then the wind motor is stopped.

Is this initialization process a film-related flag? LDEND
.

? FLEXZ, ? This process clears REWEND, resets the sheet number counter, and erases the sheet number display.

If there is a change in the wind pulse, step WP
At 14, it is detected whether or not 31- is a change from O to 1. If the change is from O to 1, the preset wind pulse counter WPC is decremented in step WP16, and WPC becomes 0.
If it is, the motor is stopped in step WP17 and the return value "
Set "Normal end" and return.

If the wind pulse count wpc is not 0, or if the wind pulse changes from 1 to 0, wait for Ions in step WP15, then move to step WP3 and start a new 1.5 second timer. Start.

The process of waiting for 10m5 in steps WPII and WP15 is as follows:
As described above, this is a process for reducing the influence of defective inputs such as chattering by not inputting signals in a region where there is theoretically no change in the signal after the wind pulse is switched.

- (Interrupt processing) Figure 21 shows a flowchart of interrupt processing. This processing is executed based on an interrupt signal that occurs at 50 Ins intervals, and includes display-related processing and soft timer counting. It is intended to carry out the following.

32- In step IRI, an INT timer used for time measurement during interval and self-timer is counted, and in step IR2, other timers, such as a 30-minute timer used in lock processing, are counted.

Next, in step IR3, the green lamp and red lamp are blinked. This process is a process for executing blinking of a green lamp for a short distance warning and a blinking of a red lamp for prompting the use of a strobe at 4 Hz in the AEAF process to be described later.

Step IR4 is a process for determining whether the hard timer of 0.5 seconds has timed up, and when the time has expired, the processes from step IR5 onwards are executed. Therefore, the processes from step IR5 onwards are executed once every ten interrupt processes.

In steps IR5 and IR6, the hard timer is restarted and a plurality of soft timers are counted.

In steps IR7 to IRIO, display of the remaining time of the interval is permitted, and if the mode is automatic shooting, and the shooting method is interval, the remaining time of the interval is displayed.

In step IRII, an LCD blinking process is performed to blink interval marks, self-timer marks, etc. at IHz.

The processing of steps IR5 to IRII does not need to be executed very frequently; on the other hand, if it were executed every time an interrupt occurs, the interrupt processing itself would take a long time and could interfere with the main loop. , is executed every 0.5 seconds.

- (Main Processing) FIGS. 22 and 23 show the main processing. This processing is repeatedly executed when the camera enters the shooting standby state by operating the main switch.

First, a 3-minute timer is started (step MAL
). This 3-minute timer is related to automatic lens storage, and is used when storing the lens when there is no change in the camera's operating status for more than 3 minutes. Next, in step MA2, the select mode counter 34 SELEMODE (hereinafter referred to as SELEMODE) is set to "0". SELEMODE is used when setting modes such as self-shooting and interval shooting.

Then, switch information is stored in memory (step M
A3).

Next, the flag? 5WSEN is set to "0" (step MA4). flag? 5WSEN is used for photometry permission determination.

? 5WSEN-1 means photometry processing permission, ? 5WSE
N-0 means that photometry processing is prohibited. Then, it is determined whether the photographing method is mid-rewind (step MA5). Step M when the shooting method is a shooting method other than mid-rewind
Move to A6. In step MA6, the flag? REV
Determine whether END is "l". This flag?
REVEEND is set to "1" when rewinding is completed, and is "0" when rewinding is not completed. Flag in step MA6? When REVEEND is "0", it is determined in step MA7 whether the memory of the previous photometry switch is ON. If the previous memory of the photometry switch is OFF, in step MA8,
flag? Set 5WSEN to "1". Step M
In A7, the previous memory of the photometry switch is ON35.
- If so, step MA8 is passed and the process moves to step MA9. This is because if you keep pressing the shutter button, you cannot tell whether there is a change in the metering switch or not, so you have to wait until the metering switch is turned OFF to set the flag. This is because it was decided to set 5WSEN to "1".

In step MA6, the flag? REVEEND is “1”
”, steps MA7 and MA8
is passed and the process moves to step MA9. This is to prohibit photometry processing when the film is rewound.

In step MA5, when it is determined that the shooting mode is midway rewind, steps MA6, MA7, MA
8 and moves to step MA9. Step MA
9. Flag? Set REWEN to "0". flag? REWEN is used to determine permission for mid-way rewinding.

Step MAIO is executed after step MA9.

In step MAIO, it is determined whether the shooting method is midway rewind. When the photographing method is half-rewind, it is determined whether the previous memory of the release switch is ON or 36-OFF (step MAII). Is it a flag when the previous memory of the release switch is OFF? REWEN is set to "1" (step MA1
2).

Then, step MA13 is executed. If the previous memory of the release switch is ON, step MA12
is passed and the process moves to step MA13. This is because if you keep pressing the shutter button, you cannot tell whether there is a change in the release switch or not. REWE
This is because it was decided to set N to "1". In step MAIO, if the shooting method is other than mid-rewind, steps MAII and MA12 are passed and step M
Move to A13. This is because, when a shooting method other than midway rewinding is used, midway rewinding is prohibited.

Flag in step MA13? Set ZOOMEN to "0". This flag? ZOOMEN is used for zoom permission determination. Then, it is determined whether the previous memory contents of the teleswitch are OFF or ON (step MA14). Teleswitch's previous memo 3
7. When the content of the wide switch is OFF, it is determined whether the previous memory content of the wide switch is OFF or ON (step MA15). When the wide switch is OFF, the flag ? ZOOME
N is set to "1" and then step MA17 is executed. Here, the fact that the tele switch is OFF and the wide switch is OFF means that the zoom lever is at the neutral position.

When the previous memory contents of the teleswitch are ON,
Pass steps MA15 and MA16 and step MA1
7 is executed. When the previous memory content of the wide switch is ON, the process of step MA16 is passed and the process of step MA17 is executed.

Therefore, when the zoom lever is in the neutral position, the flag? ZO
OMEN will be set to "1". When you keep pushing the zoom lever towards the tele switch, or when you keep pushing the zoom lever towards the wide switch, the flag? ZOOMEN remains "O". In step MA17, the flag? Set TWEN to "0". This flag 8? TWEN is used to determine permission to move to the tele end/wide end. Next, in step MA1B, it is determined whether the previous memory contents of the TW switch are ON or OFF. When the previous memory contents of the TV switch are OFF, the flag ? Set TWEN to "1". Then, the process moves to step MA20. If the previous memory content of the TV switch is ON, step MA19 is passed to step 1ilA20.
to move to. This is because if you keep pressing the TW button, you cannot determine whether there is a change in the TV switch, so wait until the TV switch is turned off and set the flag. This is because it was decided to set TWEN to "l".

In step MA20, the current state of the switch is input. Then, in step MA21, the previous memory contents and the current switch input contents are compared. When the contents of the previous memory and the contents of the current switch input are different, that is, when there is a change in the switch input, start a 3-minute timer (Step M
A22), Step 39 - Proceed to MA23. If there is no change between the previous memory content and the current switch input content, proceed to step MA2.
2 on the bus and the process moves to step MA23.

In step MA23, it is determined whether the three-minute timer has timed up. Here, first, a case in which the 3-minute timer times up will be explained.

If the 3 minute timer times up, step M
In A24, flag? AUTORET is set to "l". Then, a strobe charging stop process is executed (step MA25), a lens automatic storage process is executed (step MA26), and the process shifts to a lock process. That is, the power button 13, the shutter button 17, the zoom lever 12, the drive button 11. If three minutes or more elapse without operating the TV button 1B or opening the back cover 8, the lens will be automatically retracted. In addition,
The lens automatic storage process in step MA2B will be described later.

Next, a case will be described in which the 3-minute timer has not timed up in the main process.

If the 3-minute timer has not timed up, the flag ?40- is set in step MA27. REWF, N
It is determined whether or not is "l". If the shooting method is halfway rewind, is there a flag? Since REWEN is "1", the release switch is turned OFF in step MA2B.
It is determined whether it is N or OFF. If the release switch is ON, flash charging stop processing is executed (step MA29), and then rewind processing is executed (step MA29). In this embodiment, the drive button 11 is pressed for more than 3 seconds. While continuing, operate the shutter button 17 to turn off the release switch.
When turned on from , mid-way rewinding is executed. In addition, if a predetermined period of time elapses while the drive button 11 and shutter button 17 are held down at the same time, rewinding may be performed midway. Note that the setting for midway rewinding is performed by an exposure shooting method setting process that will be described later.

Next, in step MA27, the flag? REWEN
If it is determined that is "0", the process moves to step MA31. In step MA31, the flag? Based on LDEND, it is determined whether loading has ended.

41- If loading is not completed, determine whether the back cover switch is ON or OFF (step MA
32) If the back cover is closed, charging to the flash is stopped (step MA33), loading processing is executed (step MA34), and the process returns to the beginning of the main processing (step MA35). If it is determined in step MA32 that the back cover is open, step MA39
Migrate directly to If it is determined in step MA31 that loading has been completed, step M
At A36, it is determined whether the back cover switch is ON or OFF. When the camera back is opened, initialize the exposure/shooting method and winder system in step MA37.
Step MA38), the process moves to step MA39. If it is determined in step MA36 that the back cover is closed, the process moves directly to step MA39.

Therefore, if the main process is being executed with the back cover still closed after film loading is completed, the process proceeds in the order of steps MA31, MA36, and MA39. In addition, in the state immediately after opening the closed camera back, steps MA31, MA36, M
Processing proceeds in the order of A37, MA38, and MA39.

If the main process is being executed with the camera back open, steps MA31, MA32, MA
The processing proceeds in the order of 39. Further, when the opened back cover is closed, steps MA31, MA32, MA
The processing proceeds in the order of MA33, MA34, and MA35.

Next, in step MA39, the previous memory contents of the main switch and the current contents of the main switch are compared. Step M if there is a change in the main switch
Move to A40. In step MA40, it is determined whether the main switch is ON or OFF. If the main switch is ON, that is, if it changes from OFF to ON, proceed to step M to stop strobe charging.
A41), lens storage processing (step MA42) is performed, and the process proceeds to lock processing (step MA43). The lens storage process will be described later. If the power is turned off manually, step MA40SMA41,
Processing proceeds in the order of MA42 and MA43. Note that if the main process 43- is being executed by holding down the power button and you release your hand from the power button during the main process, steps MA39 and Ma2 will be executed.
The process then proceeds to step MA44 via step O.

In step MA44, exposure method/photography method setting processing is performed. This will be discussed later.

After completing this exposure method/shooting method setting process, step M
The process of A45 is executed. Flag in step MA45? 5ELECT is "1" to determine whether it is "Oj". This flag ?5ELECT is set during the exposure method/shooting method setting process, and is set to "1" when the time setting for the shooting method is set. Set. flag? 5ELE
When CT is "0", the process moves to step MA46. In step MA46, the flag? TWEN is “1”
or "0". flag? TWEN
is “1”, the TW switch is ON or OFF
It is determined whether it is F (step MA47). and,
When the TW switch is ON, strobe charging stop processing is performed (step MA48), telewide movement processing (step MA49) is performed, and the process returns to the beginning of the main processing (step 4 Ma2O). Here, the tele-wide movement process is a process for forcibly moving the zoom lens to the tele end or wide end by operating the TV button 18, and the details will be explained when the lens is moved.

In step MA46, the flag? TWEN is “0”
When this is the case, step MA51 is executed. Flag in step MA51? ZOOMEN is “1” or “
0". flag? ZOOMEN says “0
” flag? It is determined whether 5WSEN is "0" (step MA52). flag? 5WS
When EN is also "0", strobe charging control is performed and the process returns to step MA53 and step MA3.

In step MA51, the flag? ZOOMEN says “
1", it is determined whether the teleswitch is ON or OFF (step MA54).

When the tele switch is OFF, the wide switch is OFF.
Determine whether it is N or OFF (step MA5
5).

When the wide switch is OFF, step MA52
to move to. Therefore, when the zoom lever is in the neutral position in the zoom permission state, the main processing is performed via step 5 MA31, MA54, MA55, and MA52.

If the wide switch is ON in step MA55, it is determined whether the zoom lens is at the wide end (step MA56). If the zoom lens is not at the wide end, stop charging the strobe in step MA5.
7) Perform zoom wide processing (step MA58)
, returns to the top of the main (step MA59). When the zoom lens is at the wide end in step MA56, there is no need to move the zoom lens to the wide end, so the process moves to step MA53 without performing steps MA57 and MA58.

Next, in step MA64, the teleswitch is turned on.
If it is determined that this is the case, it is determined whether the zoom lens is at the telephoto end (step MA60).

When the zoom lens is not at the telephoto end, charging of the strobe is stopped (step MA61), zoom telephoto processing is executed (step MA62), and the process returns to the beginning of the main program (step MA63). In step MA60, when the zoom lens is at the telephoto end, there is no need to move the zoom lens to the telephoto side, so steps MA61 and M
The process moves to step MA53 without performing the processes of A62 and MA63.

i.e. flag? When the zoom lever is operated toward the tele switch when ZOOMEN is permitted, the zoom lens is moved toward the telephoto side until it reaches the telephoto end. Furthermore, when the zoom lever is moved to the wide-angle switch side, the zoom lens is moved towards the wide-angle side until it reaches the wide-angle end. Note that zoom wide processing and zoom tele processing will also be described later.

In step MA52, the flag? 5WSEN is “1”
”, it is determined whether the photometry switch is ON or OFF (step MA64);
Then, when the photometry switch is ON, strobe charging stop processing is performed (step MA65), and the process shifts to AEAF control processing (step MA66). Further, when the photometry switch is OFF, strobe charging control is performed and the process returns to step MA3.

Next, the process of moving the zoom lens will be explained in 47- Ru.

- (Lens storage processing, etc.) Fig. 24 shows the processing of lens storage, automatic lens storage, wide movement 1, and telephoto movement.

These processes are called in different places, but the latter half of the process is the same, so they are shown in the same diagram.

This lens storage process is executed when the power is manually turned on/off and when a rewind start is started. For example, it is executed in step MA42 of the main process.

First, "0" is set in the memory MVP05 (step LMI).Here, MVPOS is used to store the position to which the lens is moved, and is shared for lens automatic storage processing, wide movement 1, and telephoto movement processing. has been done.

Next, the contents stored in the memory MVPO5 and the current PO
The contents of S are compared (step LM2). This is because the direction in which the lens should be moved differs depending on the processing of automatic lens storage, wide movement, and telephoto movement. In the case of manual power-on/stop in step MA42, since the current pos content is larger than MVPOS-0, zoom motor reversal processing is executed (step LM3), and then lens position detection processing is executed ( Step LM4). This lens position detection processing is performed to constantly check changes in the zoom code while the motor is operating and to manage POS and DIV.

Then, focal length display is executed (step LM
5). Therefore, while the lens is moving, the focal length is also changed and displayed accordingly. Next, the contents of the current POS and the contents of the MVPPOS are determined (step LM6).

The processing of steps LM4 to LM6 is continued until the contents of the current POS match the contents of the MVPPOS. Then, if the contents of the current POS match the contents of the MVPPOS, a zoom motor brake process (step LM7) is performed, and the process returns to step MA43 of the main process.

This causes the lens to be stored in the storage position.

The lens automatic storage process is called by step MA26 of the main process as described above. In this process 9, the contents of the current DIV are stored in MEMDIV (step LM8). Here, MEMDIV is used to determine the return position when automatically returning the lens.

Then, 0 is set in MVPOS (step LM9). Then, processing similar to the lens storage processing (steps LM2, LM3 to LM7) is performed. This is because there is essentially no difference from the lens storage process except that the lens is automatically returned when the next power-on operation is performed.

The wide movement l process is a process for moving the stored lens toward the wide end, and is called in step LO22 of the lock process as described above. In this wide movement 1 process, first, "2" is set in MVPOS (step LMIO), and in step LM2, the content of MVPOS and the content of the current POS are determined. In the power-on/stop state, the current POS content is “0”.
'', the process moves to step LMII and normal rotation processing of the zoom motor is performed. Then, lens position detection processing,
Focal length display processing is executed (steps LM4 and LM5).
), steps LM4 to LM6 are performed until the content of the MVPPOS matches the content of the current POS in step LM6. Then, in step LM6, the contents of MVPOS and the current Po
If the contents of s match, the process moves to step LM7,
Return to lock processing. This allows the lens to move to the wide end (
It is rolled out to PO9-2).

Next, in the tele-movement processing, the "scent" is set in the MVPOS (step LM12), and the contents of the MVPOS and the current state (
7) The contents of the POS are compared. Since the content of MVPOS is always larger than the current content of PO8, the zoom motor is rotated forward (step LMII), and lens position detection processing and focal length display are executed (steps LM4 and LM
5) Next, the contents of the MVP POS and the pos are compared. The processing of steps LM4 to LM6 is repeated until the contents of MVPOS and PO8 match, and when they match, the zoom motor brake processing (step LM7) is executed.
Return to main processing (step MA50).

Therefore, the lens is forcibly moved toward the telephoto end by the telephoto movement process.

- (Lens automatic return processing) Figure 25 shows call 5 in step LO26 of lock processing.
1- shows the automatic lens return process.

In this process, first, a zoom motor normal rotation process is executed in step LRI. Next, the process moves to step LR2, where lens position detection processing is executed, and step LR3
Focal length display processing is executed in . Then, in step LR4, the current DIV and the contents stored in MEMDIV are compared.

The processes of steps LR2, LR3, and LR4 are repeated until the contents of the current DIV match the contents stored in MEMDIV. Then, when the current DIV and the content stored in MEMDIV match in step LR4, the process moves to step LR5, where zoom motor brake processing is executed, and the process returns to lock processing. As a result, the lens can be returned to the DIV position before automatic lens storage.

- (Tele-wide movement process) The tele-wide movement process is performed in step MA49 as described above.
Called in . This tele-wide movement processing is used to determine whether to move the lens to the telephoto side or to the wide side by operating the TV button 18, as shown in FIG. First, in step TWI, it is determined whether DIV is greater than or equal to BH. When DIv is greater than or equal to BH, the process moves to wide movement 2 (step TW2). Then, in step TWI, when DIV is less than BH, it shifts to tele-movement (
Step TW3).

Through this process, lens movement to the far side is selected based on the current lens position.

In other words, if the lens is close to wide-angle, the lens will move to the telephoto end, and if the lens is close to telephoto, the lens will move to the wide-angle end.

However, as a modification, tele-wide movement processing may be performed as follows.

■For example, as shown in FIG. 27, first, step T
It is determined whether PO5 is "2" in WSI. If PO5-2, shift to tele-movement (step T
WS2). In step TWSI, if it is not PO3-2, it is determined in step TWS3 whether PO5-4 or not. When PO9-4 occurs in step TWS3, the process shifts to wide 3 movement 2 (step TWS4). Step T
In WS3, if it is not PO3-4, DIV is rB
H” (step TWS5).
). In step TWS5, when DIV is equal to or greater than "BH", the process shifts to tele-movement (step TWS6).

In step TWS5, when DIV is less than "BH", the process shifts to wide movement 2 (step TWS7).

According to this example, when the lens is at the telephoto end, the lens is moved toward the wide end, and when the lens is at the wide end, it is moved toward the telephoto end. When the lens is between the wide end and the telephoto end, moving the lens closer to the current lens position is selected. That is, if the lens is close to wide, the lens is moved to the wide end, and if the lens is close to tele, it is moved to the telephoto end.

■Also, for example, as shown in Figure 28, PO3-2
If it is POS-2 in step TWTI, tele-movement processing (step TWT2) is selected; otherwise, wide-movement 2 (step TWT3) is selected. According to this example, when it is at the wide end, it is moved to the tele end,
If it is not at the wide end, it will always be moved to the wide end.

(2) Further, as shown in FIG. 29, for example, in step TWVI, it is determined whether the POS is POS-4 or not. In step TWVI, if it is PO5-4, wide movement 2 is selected (step TWV2), otherwise, telescopic movement processing (step TWV3) is selected.

According to this example, when it is at the telephoto end, it is moved to the wide end, and when it is not at the telephoto end, it is always moved to the telephoto end.

- (Wide movement 2) FIG. 30 is a flowchart showing wide movement 2 called in the above-mentioned tele-wide movement process.

First, the zoom motor is reversed (step ZWI).

Next, lens position detection processing and focal length display are executed (steps ZW2, ZW3). Next, it is determined whether it is PO5-1 (step ZW4). Step ZW4
55-, step ZW2 to ZW until PO3-1 is reached.
Repeat step 4. Then, wait 50m5 (step ZWS) and rotate the zoom motor forward (step ZW).
6).

Then, rotate the zoom motor forward (step ZW6)
, the lens position detection process is executed (step ZW7), and then, in step zW8, it is determined whether or not it is PO9-2. Step ZM7. until PO5-2.
The process of 2M8 is repeated, and when it is determined as PO5-2, the zoom motor brake process is performed and the process returns to the main process (step MA50).

This wide movement 2 process positions the lens at the wide end.

Here, we decided to drive the lens to the PO3-1 position because if the zoom motor is rotated forward, no backlash will occur in the mechanical system that drives the zoom lens, but when the zoom motor is If the lens is reversed, backlash will occur in the mechanical system, so first drive the lens to the POS-1 position beyond the wide end, then
I decided to return to the wide end of PO3-2.

56 - (Zoom telephoto processing) When the zoom lever is operated to the telephoto side, the zoom motor is rotated forward as shown in FIG. 31 (step ZNI).

Then, the next stop position when moving the lens in steps is set in memory 5TDIV (step ZN2).
. When moving telephoto, the DIV toward the telephoto side is stored based on the current DIV. This 5TDIV is a memory used to store the next stop position during step zooming. Next, the flag? 5TEP is set to "1" (step ZN3). flag? 5TEP is used to determine whether step operation or continuous operation is in progress in zoom tele processing or zoom wide processing.

Here, the zoom mode switch is configured so that when this zoom lever is pushed lightly from the neutral position, step operation is selected, and when it is pushed more firmly, continuous operation is selected. 5TEP as “1”
, and decided that step motion was selected.

Then, lens position detection processing and focal length display are executed (steps ZN4 and ZN5), and the teleswitch is set to 57.
- Determine whether the switch is OFF or ON (step ZN6). At step ZN6, the teleswitch is set to O.
When it is FF, zoom motor brake processing is performed (
Step ZN7), and return to main processing (Step MA63). That is, even if the zoom lever is lightly operated and then released, the movement of the lens is immediately stopped. When the teleswitch is ON, PO5-4
It is determined whether or not (step ZN8). In step ZN8, if it is determined that PO3-4, zoom motor brake processing is performed (step ZN7).
), the process returns to the main process (step MA63).

This is because the lens has moved to the telephoto end.

In step ZN8, if it is determined that the PO5-4 is not present, the zoom mode switch is ON or OFF.
(Step ZN9). When the zoom mode switch is OFF, the flag? 5TEP as “
0”. Then, the process returns to the lens position detection process (step ZN4), and as long as the zoom mode switch is in the OFF state, the processes of steps ZN4 to ZN6 and steps ZN8 to ZNIO are repeated. As a result, the zoom lens is continuously extended. In addition, the display of the focal length is also changed in accordance with the extension of the lens.

Then, when the zoom mode switch is turned on, the process moves to step ZNII and the flag? It is determined whether 5TEP is "1" or not. Is there a flag when the zoom lens is extended continuously? Since 5TEP is set to "0", zoom motor brake processing is executed by passing step ZN12 (step ZN13), and the process returns to the main processing (step MA63). As a result, if -degree continuous operation is selected, lens movement can be stopped simply by returning the zoom lever to the step operation position.

In the zoom lever operation, when the tele switch remains ON and the zoom mode switch also remains ON, the process proceeds to step ZNII via the determination processes of steps ZN6, ZN8, and ZN9. This step ZN6, ZN8, ZN9
The processing corresponds to the case when continuous operation mode is not selected, and the flag ? 5TEP is set to "1" and 59
- Since it remains the same, the process moves to step ZN12 to determine whether the contents of the current DIV are equal to the contents of the memory 5TDIV. When the contents of the current DIV and the contents of the memory 5TDIV are different, the process moves to step ZN4, and steps ZN4 to ZN6, steps ZN8, ZN9, and ZN
II, repeat the process of ZN12. And step Z
At N12, the current DIV contents and memory 5TDI
When the contents of V become equal, the process moves to step ZN13, performs zoom motor brake processing, and returns to main processing (step MA63).

Here, in the main flow, the flag? ZOOME
Once N is set to "0" (step MA13) and the teleswitch remains ON, step MA1
5. The processing of step MA17 and subsequent steps are executed by busing the processing of MA16, so when step MA51 is reached, the processing of steps MA54 and MA55 is bused.

Therefore, when the step operation of the lens is selected, the next step operation will not be performed unless the user releases the zoom lever and turns off the teleswitch.

-60 = -<Zoom wide processing> When the zoom lever is operated to the wide side, the zoom motor is reversed as shown in Fig. 32 (step ZRI).
. Since it is a wide movement, the DIV of the next step stop position in the wide direction is set in the memory 5TIIHV based on the current DIV (step ZR2). next,
flag? Set 5TEP to “1” (step ZR
3). Then, lens position detection processing and focal length display are executed (steps ZR4, ZR5), and it is determined whether the wide switch is OFF or ON (step ZR6). When the wide switch is OFF in step ZR6, the zoom motor is rotated forward after waiting 70 m5 (steps ZR7 and ZR8). This is to perform processing to remove mechanical backlash in the zoom drive system. Then, wait for some (step ZR9
), performs lens position detection processing (step ZR10),
Proceeding to step ZRII, it is determined whether the POS is POS-1 or not. Here, the reason why we decided to wait 70 m5 and 50 m5 is because it is not desirable for the focal length to increase by 1 during the backlash removal process even though it is moving in the wide direction.

In step ZRII, if it is not POS-1,
The focal length is displayed (step ZR12-), the zoom motor brake process is performed (step ZR13-), and the process returns to the main process (step MA59). That is, when the zoom lever is operated and then released, backlash removal processing is performed, and if the subsequent pos is not 1, the movement of the lens is stopped. When it is determined that pos after backlash removal processing is 1, lens position detection processing is executed (step ZR12), and then P
Determine whether it is O3-2 (step ZR13)
. If not PO3-2, step ZR12, ZR1
Repeat step 3, and the current pos content is PO3-2.
When it is determined that the zoom motor brake process is executed (step ZR14), the process returns to the main process (step MA59). This positions the lens at the wide end. Further, even if the zoom lever is lightly operated and then released, the movement of the lens is similarly stopped immediately.

In step ZR6, when the wide switch is ON and 62, it is determined whether it is PO5-1 or not (step ZR15). In step ZR15, PO5-
If it is determined to be 1, after waiting 50 m5, the zoom motor normal rotation processing is performed (steps ZR16, ZR17).
. Then, step ZR executes the lens position detection process.
12) Next, it is determined whether it is PO3-2 (step ZR13). If it is not POS-2, the processing in steps ZR12 and ZR13 is repeated, and when it is determined that the current POS content is PO5-2, the zoom motor brake processing is executed (step ZR14), and the process returns to the main processing (step ZR14). MA59). Step ZR16,
ZR17, ZR12 to ZR14 (7) processing means backlash removal at the wide end.

In step ZR15, if it is determined that the PO5-1 is not the zoom mode switch, it is determined whether the zoom mode switch is ON or OFF.
It is determined whether it is F (step ZR18). When the zoom mode switch is OFF, the flag? 5TEP
is set to "0" (step ZR19). and,
Returning to the lens position detection process (step ZR4), as long as the zoom mode switch remains OFF, Stella 63 ZR4 to ZR6, ZR15, ZRlB, ZR19 (7
) Repeat the process.

This causes the zoom lens to be continuously retracted.

In addition, the display of the focal length is also changed in accordance with the movement of the lens. That is, as the lens moves toward the wide side, the numerical value of the focal length is displayed decreasing.

Then, when the zoom mode switch is turned on, the process moves to step ZR20 and the flag? It is determined whether 5TEP is "1" (step ZR20). Is there a flag when the zoom lens is continuously retracted? 5TE
Since P is set to "O", ZR7 to ZR14
Alternatively, the same process as when the wide switches ZR7 to ZR13- are turned off is performed.

When the wide switch is ON and the zoom mode switch is also ON, step ZR8 unless it is PO3-1.
, ZR15, and ZRlB, and step Z
It reaches R20. Konostep ZR6, ZR15, ZRl
Processing B corresponds to the case where continuous operation mode is not selected, and the flag ? Since 5TEP remains set to "1", the process moves to step ZR24 and the current 6TEP is set to "1".
4- Determine whether the contents of DIV are smaller than the contents of memory 5TDIV. The current DIV contents are memory 5TDIV
If it is not smaller than the contents of
20, repeat the process of ZR24, and step Z
In R24, the contents of the current DIV are stored in the memory STI:
When the value becomes smaller than the content of HV, the process moves to step ZR25.

In step ZR25, 50m5 standby processing is performed, and then,
After performing zoom motor forward rotation processing (step ZR26) and lens position detection processing (step ZR27),
Move to R2B. In step ZR2B, the current DI
It is determined whether V and memory 5TDIV match.

The processes of steps ZR27 and ZR2B are repeated until the current DIV and memory 5TDIV match, and when they match, the zoom motor brake process is performed (step Z
R29), return to main processing (step MA5)
9).

Here, in the main flow, the flag? ZOOME
When N is once set to "0" (step MA13) and the wide switch remains ON, the processing from step MA17 onward is executed by busing the processing of Stella 65-P MA16, so the process returns to step MA51. When this happens, the processing of steps MA54 and MA55 is bussed. Therefore, when the step operation of the lens is selected, the next step operation will not be performed unless the user releases the zoom lever and turns off the wide switch.

- (Exposure and shooting method setting process) FIG. 33 is a flowchart showing the exposure and shooting method setting subroutine called in step MA44 of the main process. , drive switch, and select switch.

When this process starts, the flag?? in step ETI? 5
Determine the state of ELECT. This flag is set to 1 if only the select switch among the switches used for setting in the previous setting process was ONL, and is cleared when the select switch is turned OFF after setting the variables described below. 6.

flag? If 5ELECT is 0, it is determined that variables are not being set, and in steps ET2 to ET5, the exposure method and photographing method are displayed on the LCD panel, and the states of the tele and wide switches are checked. If either the tele switch or the wide switch is ON, it is determined that the zoom is being operated, and in step ET6 a 3 second timer used to determine whether to enter the rewind mode is started, and in step ET7 the mode, drive, Flags that mean select, metering, tele, wide switch opp? MDSW
Set OF to 0 and return to main processing. This flag becomes 1 when all of the above switches are OFF, and is used to detect the end point of the mode switch and drive switch from opp to on.

If both the tele and wide switches are OFF, both the tele and wide switches are OFF in step ET8.
What flag does it mean? MDZMOF is set to 1,
Determine the status of the photometry switch. flag? MDZMOF
is used to detect the end point of the teleswitch or wide switch from OFF to ON in the variable setting process described later. If the metering switch is ON,
In order to enter the AEAP process, the exposure and photographing method are not set, and the process returns to the main process via steps ET6 and ET7.

If all three switches mentioned above are OFF, proceed to step ETIO1ETII, determine the status of the mode switch and drive switch, and if both are OFF, cancel the mid-rewind mode in step ET12. After displaying the photographing method in step ET13, the 3-second timer is activated again in step ET14.

In steps ET15 to ET17, depending on the state of the select switch, if this is ON, is it a flag? 5ELEC
T for 1, flag? Set ZMSNOF to 0, OFF j,
If so, is it a flag? Set MDSWOF to 1 and return to main processing.

flag? When 5EIJCT is set to 1, it is determined that a variable setting operation is being executed, and zoom-related processing is skipped in the main processing. This is because the tele and wide switches are shared for zoom-related and variable settings, so it is necessary to limit the settings to only one of them.

Now, if the tele, wide, and metering switches are OFF and the mode switch is ON, step E
Processing proceeds from TIO to ET18, and a 3 second timer is started.

Next, in step ET19, the flag? Only when MDSWOF is 1, that is, when both the mode and drive switches were OFF in the previous setting process, the process moves to steps ET20 to ET26 and the settings are changed.

Therefore, the settings cannot be changed unless the switch is turned OFF once.

If any switch was OH in the previous setting,
This is because if the settings are changed, the settings will change continuously by continuing to press the switch, making it inconvenient to use.

Now, in step ET20, the mode switch is set to OH.
If it is determined that the
At T22, the counter EXPMODE is incremented, limit processing is performed, and the exposure method is displayed. Mode 9 If the drive switch is OFF, the drive switch is OH.
Therefore, in steps ET24 to ET26, the counter DRIVEMODE is incremented, limit processing, and the photographing method is displayed. In either case, in step ET9, the flag MDSWO is set to indicate that the mode drive switch is ONI.
After setting F to 0, the process returns to the main process.

Note that limit processing is performed when the value of counter EXPMODE is 2H or counter DRIVEMODE (7).
EX when the value is further incremented from 0OIIB
PMODE OH.

This is the process of setting DRIVEMODE to 0OOOB.

If it is determined in step ETIO and step ETII that the mode switch is OFF and the drive switch is ON, the state of the select switch is determined in step ET27. When the select switch is ON,
Proceed to step ET18. Select switch is OFF
If so, step ET6, ET14, ET
It is determined whether or not the 3-second timer started at step 18 has timed up, and the process continues in step E until the timer has timed up.
The process proceeds to T19. 3-second timer - 70 = When the timer times up, the shooting method is set to mid-rewind.

(Variable setting process) Figure 34 shows the step ET for setting the exposure and shooting method described above.
12 is a flowchart showing variable setting processing that branches from I. This process is executed when only the select switch was in the OH position during the previous exposure and shooting method setting process, and three variables are set: the number of self-timer images, the interval start time, and the interval time.

The values of each variable, memory data, and display on the LCD panel are as shown in the table below.

Table 1 Self-timer number of sheets Data Display OHIEX IH2EX 2H3EX 3H4EX 4H5EX -71 = Table 2 Interval start time Interval time Data display 10 seconds 20 seconds 30 seconds 40 seconds 50 seconds 1 minute 2 minutes 3 minutes 4 minutes OH10s IH20s 2H30s 3H40s 4H50s 5H1m 6H2m 7H3m 8H4m 9 hours ICH9h 10 hours IDH10h 12 hours IEH12h24 hours
IFH24h Step PS1 is the variable selection process shown in FIG.

Variable selection is a process of selecting which memory data to change among the three memory data of the self-timer number, interval start time, and interval time.

The selection of each data to be changed is done using the variable SELEMO.
Corresponding to the value of DE, 72-8EL72-8ELE has no variable, SELEMODE-
1 corresponds to the number of self-timer sheets, SELEMODE-2 corresponds to the interval start time, and SELEMODE-3 corresponds to the interval time.

In the variable selection process, if the shooting method is self-timer, set SELEMODE-1 and return value "variable"
is set and returns to the variable setting process. If the shooting method is interval, select SELEMODE-
If 2, change this to 3, otherwise SE
Set LEMODE-2, set the return value "variable present", and return. If the photographing method is neither self-timer nor interval, there is no need to set variables, so the return value "No variable" is set as SELEMODE-0 and the process returns to the variable setting process.

In the variable setting process, if the return value of the variable selection process is "variable present", the LCD is displayed in steps PS2 and PS3.
The display is stored in memory, the entire display is temporarily turned off, and the variable display process shown in FIG. 36 is executed.

Variable display processing is performed using the variable SELEM set in variable selection.
Table 73 - Display of memory data selected based on the ODE is executed. When this process starts, the exposure and photographing method displays are temporarily turned off, and if the mode is SRLHMODE-1, the self-timer number of shots is displayed, and the self-timer mark is lit to prompt the user to set the number of shots.

If it is SELEMODE-2, the interval start time is displayed, and the INT mark indicating the interval mode, the S mark indicating the start time, and the "→" are lit.

This camera can specify the start of interval photography in relative time intervals. Conventional cameras had an interval setting in which the shooting start time was specified as an absolute time, so a time table different from the interval time setting was required, and a clock function had to be provided. By specifying the start time as a relative time, the camera of this embodiment can use the same time table as the interval time, and is not required to have a clock function.

If it is SELEMODE-3, the interval time is displayed, and the INT mark and the "-" mark indicating the interval time are lit.

74- When the variable display is finished, in steps P55 to PS12, on the condition that both the tele and wide switches were turned off in the previous setting process, the variable data selected when the tele switch was turned on is added. The variable data is subtracted when the wide switch is turned on. If both the tele and wide switches are off, is it a flag? MDZM
If OF is set to 1 and any switch is ONL, the variable will be displayed after the setting and the flag? MDZMOF
Set to 0.

The processes in steps P814 to PS17 are executed regardless of the presence or absence of variables.

flag? If MDZMOF is 0, that is, if either the teleswitch or the wide switch was ONL last time, or if a variable change is executed, it is determined that the setting is being changed and the program returns to main processing without returning to the display. Return. flag? Even if MDZMOF is 1, if the select switch is ON, the process similarly returns to the main process.

If step PS14 is reached without a variable, the flag ? MDZMOF is a mechanical device, so the select switch is 7.
5- If it is OFF, is it a flag? Set 5ELECT to 0 and return to main processing. Even if there are variables, if both the tele and wide switches are determined to be OFF during this process, if the select switch is OFF, the flag?
LCD with 5ELECT set to 0 and stored in memory
After returning the display, return to main processing.

Here, the specific operating procedure of the variable setting process will be explained using an example.

Assuming that the tele, wide, and metering switches are OFF, the exposure method changes by one when the mode switch changes from OFF to ONL. If you want to change the exposure method further, you need to turn the mode switch off and then on again. By repeating this 0N10FF, the exposure method is sequentially switched between three methods: auto, strobe ON, and strobe OFF.

When the drive switch is changed from OFF to ON, the photographing method changes by one. Drive switch 0N10F
F allows single-frame shooting, self-timer, self-TV,
Change sequentially between the four methods of intervals.

When the shooting method is changed from single-frame shooting to self-timer, after the drive switch is turned OFF, the select switch is turned ON to enter variable setting, and the self-timer number of shots is set. The number of self-timer shots can be changed by operating the tele switch or wide switch while the select switch is kept on. Changes are made by looking at the OFF to ON endpoints of the tele and wide switches, so O
Even if the process continues for N cycles, the data is changed by only one level.

If the select switch is turned off during the process, the set state will be canceled.

When the shooting method is changed from self-TV to interval, the drive switch is turned off and then the select switch is turned on to enter the interval start time setting mode. Here, by operating the tele and wide switches while keeping the select switch ON,
You can set the interval start time. If you turn off the select screen 7-1 once, the setting status will be canceled, but if you turn it on again, it will enter the interval time setting mode.
The interval time can be set by operating the tele and wide switches while keeping the select switch ONL. When the select switch is turned off, the setting state ends.

Note that the interval start time and interval time can be set repeatedly.

After the above settings, by turning on the release switch, the self-timer or interval is executed based on the setting data.

Also, if only the drive switch is kept on, a 3 second timer will count up, and when the timer is up, the game will go into rewind mode. In mid-rewind mode, turn off the photometry switch while keeping the drive switch on.
If N is selected, the film is rewound.

(AEAF Control Processing) Next, the AEAF control processing related to shutter control will be explained based on FIGS. 37 to 38. This processing is executed when the photometry switch changes from OFF to ON in 78- Main Process Furthermore, if the shooting method is self-timer or self-TW, the second or subsequent shots are executed after winding, and if the shooting method is interval control, it is executed from the rAEAF control 3 terminal.

In steps EFI to EF3, distance measurement data is input, lens latch (LL) calculation is performed, and if the distance to the subject is a distance that the photographing lens can focus on, the green lamp is turned on, and if the distance to the subject is a distance that cannot be focused. If so, the green lamp will flash to warn you. Although detailed description will be omitted, the LL calculation is a calculation that determines the amount of lens movement for focusing on the subject based on the distance measurement result.

When the AEAF control process is executed from the terminal of the AEAF control 3, that is, when the shooting method is interval, self-timer, or self-TV and the second or subsequent shots are taken, distance measurement and LL calculation are not performed. Therefore, in these cases, the previous LL data will be used as is,
The focus will be the same as the first photo.

79- This is to prevent out-of-focus when the object to be photographed moves from the distance measurement area at the center of the screen.

Next, in step EF4, the DX code indicating the ISO sensitivity of the film is input, and this value is converted to the Sv value used for exposure calculation based on the correspondence shown in Table 3, and the exposure method is changed accordingly. A correction value ΔEvsmfn for the lowest speed shutter # value in the case of auto and a correction value ΔEvsfl for the strobe light emission switching shutter control value Evs+fl are set.

Table 3 DX2 3 4 TSOSv ΔEvsminΔE
vsf11 1 1 25 3.0
0.00 0.01 1 0
50 4.0 0.00 0.01
0 1 100 5.0 0.0
0 0.01 0 0 200
B, 0 0.25 0.50 1
1 400 7.0 0.50
1.00 1 0 800 8.0
0.50 1.00 0 1 160
0 9.0 0.50 1.00 0 0
3200 10.0 0.50 1
．． 0 The camera of this example has a film sensitivity of high sensitivity 80.
- When set to -, the increase in sensitivity is not only used to lower the self-help flash switching brightness, but also to prevent deterioration in image quality due to camera shake. For this reason, when the film sensitivity is high, the light emission switching shutter control value Evsfl is increased to suppress the reduction in automatic flash switching brightness to about half of the conventional level, and the corresponding exposure is used to increase the minimum shutter speed. .

ΔEvsmin and ΔEvsfl are correction values of the light emission switching shutter control value Evsfl of the lowest speed shutter control value +1−vsmin with the sensitivity of 150100 as a reference.

Tables 4 and 5 show the light emission switching brightness and the lower limit of the AE interlocking range of the camera of the present invention, with Table 4 showing the values on the wide side and Table 5 showing the values on the tele side. . (however,
Brightness value Lv=subject brightness Bv+5 is defined. ) Table 4 Wide 150100 150200 1
50400AE interlocking range lower limit (Lv) 9.00
8.25 7.50 Shutter speed 114
5 seconds 1154 seconds 1/64 seconds Table 5 Tele 180100 Light emission switching brightness (Lv) 10.75 Light emission switching value (E
vsfl) 9.50AE interlocking range lower limit (Lv)
10.75 Minimum speed shutter control value (Evsmin) 9.50 9.76
10.00 Shutter speed 1164 seconds 117
6 seconds 1/90 seconds With the above settings, the lowest speed shutter control value Ev@min changes according to the film sensitivity, so if a high-sensitivity film is used, the effects of camera shake will be more effectively suppressed. can be prevented.

In addition, when performing the control shown in the above table, the lowest speed shutter control value Evamln and the light emission switching shutter control value E
vsfl do not take the same value, and Evsmin <Ev
In the region sfl, the strobe light emission range and the AE interlocking range partially overlap. In this case, by performing FM control with an aperture value that is approximately IEv smaller than the aperture value determined by FM calculation, excessively overexposed photography will not occur.
It is possible to obtain a preferred exposure.

In step EF5, the correction amount α for the aperture f-number, the light emission switching shutter control value Evsfl when the exposure method is auto, and the lowest speed shutter control value Evamin are determined from the lens focal length code IHV according to the correspondence shown in Table 6.
Find the amount of change ΔGNo in the guide number of the strobe with reference to the s-wide end.

83- Table 6 DIV a Evs+nl
n, EvsflΔGNo.

1 WIDE end 0 0/8 9 0/8
0/82 0 1/8 9 0
/8 0/83 0 1/8
9 0/8 0/84 0
2/8 9 0/8 1/85
0 2/8 9 0/8 1/8
6 0 3/8 9 0/8
1/87 0 3/8 9 0
/8 1/88 0 4/8
9 0/8 1/89 04
/8 90/8 2/8A
05/8 90/8 2/8B
0515 90/8 2/
8C06/8 90/8 2/8D
06/8 9 0/8 2
/8E 07/8 91/8
3/8F 0 7/8 9
1/8 3/810 1 01
0 9 2/8 3/811
1 0/8 9 2/8 3/81
2 1 1/8 9 3/8
3/813 1 1/8 9
3/8 4/814 1 2/8
9 4/8 4/815 Place E end
1 2/8 9 4/8 4/8 and
Based on the above data and the photometric data input from the sub CPU in step EF6, AEFM (automatic exposure, flashmatic) calculation processing shown in FIG. 39 is performed in step EF7, and AE and FM84 data are set.

In steps EF8 to EF13, the calculated FM
If the data indicates strobe emission, it is determined whether the charging voltage of the strobe capacitor has reached a level that allows strobe emission, and if it has reached the level that allows strobe emission, the red lamp is lit and strobe emission preparation is completed. is displayed, and if it is impossible, the process enters steps EF14 to EF18 to wait for charging.

However, the flag? If AUTOR1iL is 1 and the imaging method is interval, the voltage is not checked. This is because during interval photography, charging control is performed every time one photograph is taken, as shown in interval control in FIG. Also, the flag? When AUTOREL is 1, it is assumed that the photographer is away from the camera, so no red lamp is displayed. By the way, the flag? AUTOREL
is set to 1 when taking the second and subsequent shots in each of the interval, self-timer, and self-twist shooting modes, and is mainly used to automatically determine the status of the metering switch and release switch to enter the release sequence. It is used to perform photographing.

If it is determined in step EF8 that the strobe is not emitting light, there is no need for charging, so steps EF9 to EF13 are skipped, and the process begins in step EF21.

Is the charging wait processing in steps EF14 to EF1B a flag? When AUTOREL is 1, that is, if the photographing method is self-timer or self-TV and the second or later photograph is to be taken, an interruption determination is made; otherwise, the metering switch determination is repeated and charging control is repeated until charging is completed. If charging is completed, the process is executed again from step EF8, and if the return value of the interruption determination is YES during charging, or if the photometry switch is turned OFF, step E is executed.
At F19 and EF20, the green lamp and red lamp are turned off, charging is stopped, and control is transferred to the main.

In steps EF21 to EF23, the set LLSA
E.

Outputs each FM data to the sub CPU.

When taking the second and subsequent pictures in each of the interval, self-timer, and self-TV shooting methods, the process skips the photometering and release switch determination in step 86 and jumps to "S" in FIG. 38. Step EF25. EP2
In step 6, the camera waits for the release switch to be turned on on the condition that the photometry switch continues to be turned on, and when the release switch is turned on, the process advances to "R" in Fig. 38, and the release switch is turned on. If the photometry switch is turned off before the photometry is turned off, the red and green lamps are turned off in step EF27 and the process jumps to the main process.

Steps EF28 to EF54 in FIG. 38 are processes for waiting for a time until release when the shooting method is other than one frame. If the shooting method is 1 frame, step EF is executed directly from EF2111 and EF36 without going through these processes.
The process proceeds to step 55.

As mentioned above, since the second and subsequent shots are taken from the "S" terminal, steps EF29 to EF35 are used for the first shot in the interval shooting method, and steps EF37 to EP42 are used for the first shot in the self-timer and self-TV mode. is executed.

First, if the shooting method is interval, IN? Set the interval start time on the timer and flag? AUTORB
Set L to 1 and set the interval mark to blink to indicate that it is in operation, and to permit display of the remaining interval time. In step EF33, the maximum number of images to be taken in an interval is set to 40 in the exposure counter EXPC.

Here, if the start time is 10 seconds, the following process will wait for the start time, but if it is 10 seconds or more, step E
Proceeding from F34 to step EF35, the green lamp and red lamp are turned off, and the process branches to the interval control shown in FIG. 42.

If the shooting method is self-timer or self-TV, set the INT timer to 10 seconds in steps EF37 to EF39, and set the flag? AUTOREL 1
The self-timer mark will flash to indicate that it is in operation. Next, if the shooting method is self-timer, set the number of self-timer shots specified in the exposure counter Expc, and if the shooting method is self-timer, set 2 to EXPC.
Set the number of sheets.

88- In the case of interval shooting, there is little need to change the photometry data if the time until shooting is within 10 seconds, but if more time has elapsed, there is a high possibility that the subject brightness has changed. It is more reliable to perform photometry again, so -
The camera first moves to interval control, and then performs AEAF control again when it is almost ready to take a picture.

Steps EF43 to EF46. The EF70 waits for the INT timer to time up while keeping the self-timer lamp lit while repeating the interruption determination, and when the remaining time on the INT timer becomes less than 3 seconds, it flashes the self-timer lamp to notify that shooting will begin. . If the return value of the interruption determination is YES, step EF4
At step 7, the red lamp and green lamp are turned off and control is transferred to the main control.

Steps EF48 to EF54 are IN depending on the shooting method.
This is a process to reset the T timer. In the case of a self-timer, if the initially set number of self-timer images is 3 or more, it is set to 2 seconds, and if it is 2 or less, it is set to 5 seconds. In the case of self-TV, the number of shots is fixed at 2, so it is set to 5 seconds. In the case of an interval, in order to prevent the display from returning to a non-zero number due to the INT timer's time-up, prohibit the remaining time display and forcibly display 0 seconds, and set the interval time on the INT timer. .

The reason for changing the time until the second and subsequent shots depending on the number of shots taken by the self-timer as described above is that when taking multiple photos with the self-timer, the purpose is to print more copies or to change the scene. This is because it is thought to be summarized into two patterns: to obtain photographs, and the intervals required for each purpose are considered to be different.

That is, if the purpose is to print more copies, the same scene may be used, so the shooting time interval may be short, but if the scene is to be changed, it may take some time to rearrange the image.

Therefore, if the purpose can be determined, the interval time until the next photographing can be changed in accordance with the purpose. Here, considering the tendency of boat fishing and the fact that the number of shots taken at one time is relatively large when the purpose is to print more copies, and few when the purpose is to change the scene, the self-timer is used. If the number of copies is 3 or more, the interval is set to 2 seconds, assuming that the purpose is to print more copies, and if the number of copies is 2, the interval is set to 5 seconds, assuming that the purpose is to change the scene.

The release sequence of steps EF55 to EF62 is executed immediately after the release switch is turned on if the photographing method is one frame, or after the INT timer times up in the case of other methods. Here, first, the red lamp, green lamp,
After turning off the self-timer lamp and outputting a shutter start signal to the sub CPU, confirm that a shutter operation end signal is input from the sub CPU.

If the shooting method is single-frame shooting, the process directly proceeds to the wind process; in other cases, the exposure counter is decremented and then the process proceeds to the wind process.

However, if this counter reaches O, the subroutine for automatic exposure cancellation is executed, and then the process proceeds to wind processing.

91 <AEFM calculation process> FIG. 39 shows the AEFM calculation subroutine called at step EF7 during the AEAF control process.

This process sets the exposure data to be output to the sub-CPU, determines whether the strobe emits light or not, and determines the aperture value Avs when flashing.

In step AMI, flag? Clear BVmin,
Set FM data to non-emission.

Next, in steps AM2 to AM4, if the photometric value By is less than the lower limit value i, o, flag? Assuming BVmin to be 1, the photometric value Bv is rounded to 1.0, and the upper limit is limited to 12.0.

In step AM5, film sensitivity Sv and photometric data B are
An exposure value Evs is calculated from v and a correction value α of the open F-number based on the wide end.

In steps AM6 to AM8, the exposure method is strobe ON.
In the case of , if it is auto and the photometric value is below the lower limit,
Alternatively, if the exposure value is less than the light emission switching shutter control value, the FM calculations in steps AM9 to AM13 are performed, and in other cases, the process proceeds to step AM14 with the strobe not being emitted. Note that the light emission switching shutter control value Evsfl in step AM8 is a value after correction to which the above-mentioned correction value ΔEvsfl is added.

In step AM9, the AFstep determined based on the distance measurement data is set to the aperture value A corresponding to the reference guide number.
Convert to ys. Then, in step AMIO,
Add the change in guide number ΔGNo due to the strobe's own zooming to Avs, and the change in film sensitivity (Sv-5) based on l5O100 to obtain the open f-number based on the wide end based on the change in lens focal length. Avs is obtained by subtracting the correction amount α.

In steps AMII to AM13, the lower and upper limits of the Avs value are limited between 3.5 and 8.0, and the Avs value is
Set as M data.

In steps AM14 to AM16, the upper and lower limits of the exposure value Evs are limited, and these are set as AE data and AMAF
Return to control processing. The lowest speed shutter control value Evsmin in step AM15 is the above-mentioned correction value ΔEvs
This is a value corrected by adding mjn.

3-(Interruption Judgment Process, Automatic Release Release Process) FIG. 40 is a flowchart showing the interruption judgment process. This process is performed for self-timer and self-TV.

This is a process to interrupt automatic interval shooting.
executed in a loop. In automatic shooting, after entering each sequence, shooting is performed automatically without any instructions from the photographer, so this process is necessary in case you want to interrupt this in the middle of the sequence.

In steps DCI to DC4, if loading is not completed, the return value is YES if either the back cover switch or the main switch is ON, and both are OFF.
If loading is completed, the return value is YES, and even if the camera back switch is OFF, or the camera back switch is ON, if the main switch is ON, the return value is YES, and the camera back switch is ON. If it is ON and the main switch is OFF, the answer is No.

If the return value is YES in the interruption judgment, or if the automatic release release process is to be performed, in step 94 steps DC5 to DC10, the auto release state is canceled, the self-timer lamp is turned off, and the shooting method is set. In the case of a self-timer or self-TV, the self-timer mark displayed on the LCD will be switched from blinking to indicate that it is in operation, to lit to indicate that it is on standby; similarly, in the case of an interval, the interval mark will be switched from blinking to lit. , changes the time display to focal length display.

- (Wind Processing) Fig. 41 shows a winding process that branches after photographing in AEAP control.This process winds the film by one frame after photographing has been executed.

Is step WDI a flag? It is determined from the state of FLEXZ whether or not a film has been set, and if there is a film, the wind pulse counter WPC is set to 4 in steps WD2 to WD5 and the above-mentioned wind pulse counting process is executed to ensure normal operation. If the process is completed, the number of sheets counter is incremented and the number of sheets is displayed on the LCD panel.

If the return value of the wind pulse count process 95- is "stop", steps WD6 to WD7
In this case, if the back cover is open, the process returns to the main process, and if the back cover is closed, the automatic release release shown in FIG. 40 is executed, and then the process branches to the rewind process.

If steps WD2 to WD5 are skipped because there is no film, or if the wind pulse count process ends normally, the process returns to main processing if the shooting method is single-frame shooting, or returns to AEAF control if the shooting method is self-timer. If it is a self-TV, wide movement 2 processing is performed to set the lens at the wide end, and then AEAF control is entered. Further, if the imaging method is interval, the process branches to interval control, which will be described later.

-<Interval Control> FIG. 42 shows a flowchart of interval control that is branched from the wind processing and executed. This process is a process of waiting while measuring the set interval time for shooting the second and subsequent images when the shooting method is set to interval. In cases other than intervals, the process is normally executed in a loop within the main process 96-ring, but in the case of intervals, the process is executed in a loop between the AEAF control process and the interval control process without going through the main process. Processing is executed.

When this process starts, in steps INI to INS,
Set the INT timer to the remaining time of the interval, that is, if the time until the next shooting is less than 5 seconds when the strobe is off, set it to 5 seconds, and for other methods, set it to 11 seconds if it is less than 11 seconds. do.

This is the minimum waiting time required for the camera system, and if necessary before entering the loop described later,
This is the process of resetting the T timer.

Note that in shooting methods other than strobe OFF, there is a possibility that the strobe will emit light, so extra time is taken to charge the strobe capacitor.

In step IN6, display of the remaining interval time in the above-mentioned interrupt processing is enabled, and in steps IN7 to l
The interruption determination is repeated by the loop of Nl0 until the remaining time of the interval becomes less than 5 seconds or 11 seconds determined by each imaging method.

97- If the result of the interruption determination is YES, that is, interruption, the process branches to the main flow and is executed.

The loop from steps INII to IN17 is a process that repeats the interruption determination until the remaining time of the interval becomes less than 3 seconds, and if the exposure method is other than strobe OFF, the strobe charging control is repeatedly executed, and the remaining time of the interval is When the time is less than 5 seconds, strobe charging is stopped. Therefore, when using an exposure method other than strobe OFF, charging control is performed for 6 seconds.

The strobe charge control in step IN14 is a process of starting charging if the charging voltage of the strobe capacitor has not reached a predetermined level, and does not perform an energizing operation if the voltage has reached a predetermined value.

If the remaining time of the interval is less than 3 seconds, the above A
The EAF control process is executed from the terminal of ``rAEAF control 3'', and if the result of the interruption determination becomes YES before that, the process branches to the main flow.

- (Rewind Processing) 8- Fig. 43 is a flowchart showing a rewinding process that branches from the winding process or from step MA30 of the main process. There are some operations that are executed when rewinding is specified by an operation.
This process returns the film to the cartridge.

In steps RW2 to RW4, the lens is returned to the storage position, the wind motor is reversed, and the wind pulse counter wpc is set to 4, which corresponds to winding one frame.

Next, in step RW5, a flag indicating the start of the 2-second timer is set. Clear 2START and step R
After starting the 3.5 second timer in W6,
A loop of steps RW7 to RW21 is entered.

In this loop, the input of the back cover switch and wind pulse WP is repeated, and the number of sheets counter is subtracted and displayed every four times the wind pulse rises, and if there is no pulse change within a predetermined time, or the back cover is opened. You can exit if you are Control 99- The time limit is 2 seconds, but the motor continues to rotate for 3.5 seconds after the wind motor is reversed, regardless of the state of the camera back or the wind pulse. This is because wind pulses may not be generated due to slack in the film or the like at the beginning of the motor rotation, so the motor is rotated a little longer.

Until the 3.5 second timer times up, the process proceeds from step RW7 to step RWIO, where switch input is performed and used for determination in steps RWII and RW12.

Assuming that the camera back is closed, step R
A loop of steps RW13, RW7, and steps RWIO to RW13 is formed until it is determined in W12 that there is a change in the wind pulse WP. After the 3.5 second timer times up, step RW8, RW
At 9, a 2 second timer is started and a flag? 2S
Set TART to l, step RWIO~RW14
A loop is formed.

If there is a change in the wind pulse, the process proceeds from step RW12 to step RW15, and the change is turned OFF.
Is it a change (rise) from to ON, or is it 100?
- It is determined whether the change is from ON to OFF.

Further, if the change in the wind pulse is a rising edge, the wind pulse counter WPC is decremented in step RW16, and it is determined whether or not it has become zero. If it becomes 0, it is determined that the film has been rewound by one frame, and in steps RW17 to RW19, the number of sheets is subtracted, the number of sheets is displayed, and the wind pulse counter is reset.

Step RW20 is a process that is executed in any case when there is a change in the wind pulse, and as described in the above-mentioned wind pulse count process, signal input is not performed in a region where there is theoretically no change in the signal. This is a process to reduce the influence of bad inputs such as chattering.

Before starting the two-second timer, the process returns from step RW21 to step RW7, and after starting, the process returns to step RW8 to restart the two-second timer.

If the camera back is opened during the above loop, if the 3.5 second timer is up in steps RW22 to RW24, the winder system is initialized and the wind motor is stopped. Step RW3
Processing proceeds to 0.

If there is no change in the wind pulse until the 2-second timer times up, it is determined that there is no film or that the film has been completely rewound, and the process starts at step RW25.

In steps RW25 to RW29, after the wind motor is stopped, if there is film, a flag indicating the end of rewinding is set? Set REVEEND to 1 and set the number of sheets counter to 0.
to display the number of sheets. If there is no film, steps RW27 to RW29 are skipped and the process proceeds to step RW30.

Steps RW30 to RW32 are processes for rotating the wind motor that has stopped once in the normal direction for 0.5 seconds to release the drive system engaged with the spool shaft and free the spool shaft for the next loading. .

When the rewind process ends, the process returns to the lock process and continues.

[Effect] 102- Since the camera with a zoom lens according to the present invention is configured as described above, the zoom lever can be easily and quickly positioned at the zoom end without bothering to operate the zoom lever. This has the effect of being convenient in terms of usability.

[Brief explanation of drawings]

1 to 3 show the external appearance of the camera, with FIG. 1 being a plan view, FIG. 2 being a front view, and FIG. 3 being a rear view. Fig. 4 is a block diagram of the control circuit, Fig. 5 is an explanatory diagram of the contact configuration of the zoom switch, Fig. 6 is a display correspondence diagram of the exposure method, Fig. 7 is a display correspondence diagram of the shooting method, and Fig. 8 is an LCD diagram. An explanatory diagram of the panel segments, Fig. 9 is a developed diagram of the code plate and a diagram of the correspondence between the code plate and each code, Fig. 10 is an explanatory diagram showing an example of zooming operation, and Fig. 11 is an explanatory diagram of the wind pulse switch. , FIG. 12 is an explanatory diagram showing an example of the output of the wind pulse. 13 to 43 are flowcharts showing the functions of the camera of this embodiment. FIG. 13 is a reset process, FIG. 14 is an exposure and shooting method initialization process, and FIG. 15 is a zoom initialization process, Figure 16 shows lock processing, Figure 17 shows sheet count display processing, Figure 18 shows winder system initialization processing,
Figure 19 shows the loading process, Figure 20 shows the wind pulse count process, Figure 21 shows the interrupt process, Figure 22 shows the
Figure 3 shows the main process, Figure 24 shows the lens storage process, etc.
Figure 5 shows lens automatic return processing, Figures 26 to 29 show tele wide processing, Figure 30 shows wide movement 2 processing, Figure 31 shows zoom tele processing, Figure 32 shows zoom wide processing, and Figure 33 shows lens automatic return processing.
The figure shows exposure and shooting method setting processing, Fig. 34 shows variable setting processing, Fig. 35 shows variable selection processing, Fig. 36 shows variable display processing,
37 and 38 are AEAF control processing, FIG. 39 is AEFM calculation processing, FIG. 40 is interruption processing, FIG. 41 is wind processing, FIG. 42 is interval control processing,
The figure shows rewind processing. JP-A-3-253827 (37) JP-A-3 253827 (41) 25 FIG. 6 FIG. 7 FIG. 35 SELEMODE Interval time procedure correction Document (method) Procedural amendment (voluntary) 1. Indication of the case 1990 Patent Application No. 53095 2. Name of the invention Camera with zoom lens 3. Person making the amendment Relationship to the case Applicant name (052) Asahi Optical Co., Ltd. Kogyo Co., Ltd. 4, Agent 135 Telephone 820-1811 Address 1-14-3 Monzennakacho, Koto-ku, Tokyo June 11, 2016
(Delivery date: June 26, 2007) 6. All drawings subject to correction April 18, 1990 Patent Application No. 53095 2. Title of invention: Camera with zoom lens 3. Correction Relationship with the case filed by the applicant Applicant name (052) Asahi Optical Industry Co., Ltd. 4, Agent 〒
135 Telephone 3820-1811 Address 1-1 Monzennakacho, Koto-ku, Tokyo ← 35 Insert the following sentence on a new line after the specification to be amended. , which counts the time-up every r50ms.
Note that the main switch, mode switch, select switch, and drive switch are ON only while the respective buttons are pressed, and are OFF when the buttons are released. ” (2) On page 9 of the specification, line 18 to line 19 of the same page, “
Self-TWJ means rSelf-TW (a mode that takes two pictures with the self-timer; the first picture is taken at the focal length set by the user, and the second picture is taken automatically with the lens set to the wide end. (The image is taken with the following settings)”. (3) In the specification, from page 10, line 18 to page 11, line 1, the phrase "here...is the time." 0) J until the first photograph is taken.'' (4) In line 16 of page 21 of the specification, the phrase "immediately before automatic storage" is amended to read "immediately before automatic storage." (5) In the third line of page 33 of the specification, the phrase ``other'' is amended to read ``other''. (6) In the 15th line of page 33 of the specification, after the statement ``This will be executed.''
(not shown). ” is inserted. (7) In the 17th line of page 33 of the specification, the phrase ``a plurality of'' shall be corrected to ``ro, a plurality of times that count time-ups every 5 seconds''. (8) r on page 68, line 15 of the specification? ZMSWOF
”, r? Correct with MDSilJ. that's all

Claims (1)

[Claims] (1) A zoom lens with a zoom lens characterized in that, in addition to the operation means for specifying the zoom direction of the lens, an operation means for forcing the lens to be positioned at the zoom end is provided at the position of the lens. camera.