JP2001318422A - Camera used for silver halide photography and also for electronic image pickup - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that the trimmed part of an electronic-picked up image is increased due to a viewing angle difference between silver halide photography and electronic image pickup at simultaneously exposing for the silver halide photography and the electronic image pickup, and then, the quality of the trimmed image which is enlarged and displayed on a monitor is deteriorated. SOLUTION: An electronic image pickup optical system 38, an electronic imaging device 43 and a monitor 10 are arranged in a lens cap 7 for a silver halide photographing optical system 6, and as for the electronic image pickup optical system 38, an optical lens group having a different focal distance is selectively arranged and the optical lens group of the electronic image pickup optical system 38 is selected in accordance with the focal distance of the silver halide photographing optical system 6, and at photographing an object, the exposure for the silver halide photography and the exposure for the electronic image pickup are simultaneously performed while turning the system 38 in the lens cap 7 to the object and turning the monitor 10 to the photographer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to silver having both functions of an electronic image pickup device having an electronic image pickup device for converting a subject image into an image signal and a silver halide photographing device for transferring the subject image to a silver halide film. The present invention relates to an improvement in a camera for both salt imaging and electronic imaging.

[0002]

2. Description of the Related Art Conventionally, a subject image is exposed to a silver halide film and, at the same time, a subject image is photoelectrically converted by an electronic image pickup element to generate a subject image signal. A camera for both silver halide photography and electronic imaging which displays a subject image based on the subject image signal is known.

For example, Japanese Patent Application Laid-Open No. Sho 62-61036 discloses a silver halide photographing and electronic method in which light emitted from a pentaprism of a finder optical system of a single-lens reflex camera is divided by a half mirror and guided to an electronic image pickup device. An imaging camera is disclosed. In this silver halide photography and electronic imaging combined camera, parallax does not occur because the imaging range of the silver halide photography optical system and the electronic imaging optical system is the same, but since the luminous flux of the subject is divided into two by the viewfinder,
There is a problem that the light amount of the viewfinder is reduced. Further, in the case of a single-lens reflex camera, a method of switching between subject convergence to be incident on a silver halide film and subject convergence to be incident on a viewfinder by a quick return mirror is generally used. When the electronic imaging optical system is provided in the viewfinder optical system, since the luminous flux from the subject cannot enter the silver halide imaging optical system and the electronic imaging optical system at the same time, the silver halide imaging optical system and the electronic imaging optical system are not provided. Simultaneous imaging of the system cannot be ensured. For this reason, when displaying an electronically photographed subject image on a monitor and confirming the subject image that has been exposed and photographed on a silver halide film, the subject image whose electronic imaging timing is shifted from the silver halide photographed subject image is displayed on the monitor. Will be displayed. In order to solve the difference between the timing of silver halide photography and electronic imaging, there is a method of using a fixed pellicle mirror (half mirror) instead of using a quick return mirror. There is a disadvantage that the amount of light incident on both of the finder optical systems decreases.

Japanese Patent Application Laid-Open No. 10-104736 discloses a twin-lens camera for both silver halide photography and electronic imaging. In the case of the twin-lens camera for both silver halide photography and electronic imaging, it is disadvantageous from the viewpoint of parallax as compared with the above-mentioned single-lens reflex camera system, but the optical path is divided in terms of the light quantity of the subject image. This is advantageous because no half mirror is required. Furthermore, in the case of two eyes type,
Since there is no switching of the optical path between the silver halide photography and the electronic imaging, it is easy to ensure the simultaneous photography of the silver halide photography optical system and the electronic imaging optical system.

[0005] In this twin-lens type silver halide photographing and electronic imaging camera, when the photographing optical system for photographing silver halide is equipped with a zoom lens, the shape of the lens barrel for accommodating the silver halide photographing optical system. Increases in length and thickness. The position where the electronic imaging optical system is attached to the camera body having the lens barrel of the silver halide imaging optical system having such a large shape is restricted, and the light flux incident on the electronic imaging optical system from the subject is reduced by the silver halide. It is necessary to set the position so as not to be kicked by the lens barrel of the photographing optical system. For this purpose, the optical axis of the electronic imaging optical system is set at a position separated from the optical axis of the silver halide photographing optical system. For example, the above-mentioned Japanese Patent Application Laid-Open No. 10-104736 discloses a method of providing an electronic imaging optical system in a flash pop-up unit.

[0006]

Conventionally, in a camera for both silver halide photography and electronic imaging, the luminous flux of a subject taken into a viewfinder of a single-lens reflex camera as described in Japanese Patent Application Laid-Open No. 62-61036. There is a method of eliminating parallax by separating and making incident on the finder eyepiece and the electronic image pickup device. However, when shooting and exposing the subject image confirmed by the viewfinder on the film surface, the quick return mirror must be operated to allow the subject light beam projected on the viewfinder to be projected onto the film surface. There has been a problem that a shift occurs in the electronic imaging timing, which impairs the synchronism between the silver halide photographed subject image and the electronically photographed subject image.

Further, as described in Japanese Patent Application Laid-Open No. 10-104736, a twin-lens camera having a different optical system for silver halide photography and electronic imaging has a zoom lens provided in the silver halide photography optical system. In this case, the shape of the silver halide photographing optical system becomes large. In this silver halide photographing optical system, it is necessary to arrange the electronic imaging optical system at a position where the subject image incident on the electronic imaging optical system is not removed, and there is a method in which the electronic imaging optical system is provided in a strobe pop-up section. In this twin-lens system,
Although the parallax problem occurs, there is also an advantage that the luminous flux of the subject in silver halide photography and electronic photography does not decrease.

However, when an image is taken by operating the zoom lens of the silver halide photography optical system, the subject image captured by the electronic imaging optical system is changed depending on the zoom lens operation state of the silver halide photography. It is necessary to adjust the angle. In other words, unless the angle of view of the electronically captured subject image is made the same in accordance with the angle of view of the subject captured by the silver halide shooting optical system, even if the electronically captured subject image is displayed on a monitor, the subject image of the silver halide shooting is displayed. Cannot be confirmed. For this purpose, masking processing or zoom processing is performed on the electronically captured subject image in accordance with the silver halide photographed subject image, and the silver halide photography and the electronically captured subject image are matched.

Therefore, a subject image signal captured by an electronic image pickup optical system and photoelectrically converted by an electronic image pickup device is subjected to masking processing, and zoom processing for image enlargement is performed based on the subject image signal after the masking processing. There is a problem that the image quality of the image displayed on the monitor is deteriorated.

The present invention minimizes parallax between a silver halide photography optical system and an electronic imaging optical system in a binocular silver halide photography and electronic imaging combined camera having different optical systems for silver halide photography and electronic imaging. It is another object of the present invention to provide a camera for both silver halide photography and electronic imaging in which the focal length of the electronic imaging optical system can be adjusted according to the focal length of the silver halide photography optical system.

[0011]

According to the present invention, there is provided a camera for combined use of silver halide photography and electronic imaging, comprising: a silver halide photography optical system for forming and exposing a subject image on a silver halide film; A lens protection means capable of setting a first position for protecting the silver halide photographing optical system means and a second position for photographing the subject by the silver halide photography optical system means when photographing the subject; and a built-in lens protection means. Electronic imaging means for electronically imaging the subject when the lens protection means takes the second position at the time of shooting the subject.

The electronic imaging means of the camera for both silver halide photography and electronic imaging according to the present invention comprises an optical lens and an electronic imaging device for imaging a subject, and a subject image signal generated by the electronic imaging device. A monitor for displaying an image, wherein, when the lens protection unit is positioned at a second position for photographing the subject, the optical lens and the imaging surface of the electronic imaging device are positioned on the subject side; Side.

Further, the camera for both silver halide photography and electronic imaging according to the present invention comprises a silver halide photography optical system means having a function of focusing and exposing a subject image on a silver halide film, and a focal length switching function. A lens protection unit that can take a first position for protecting the silver halide photographing optical system unit and a second position for photographing the subject with the silver halide photographing optical system unit when photographing the subject; and the lens protection unit. Electronic imaging means for electronically imaging a subject when the lens protection means takes a second position at the time of imaging the subject; and the silver halide imaging optics incorporated in the lens protection means. Electronic imaging optical system means having a function of switching the angle of view of a subject image incident on the electronic imaging means in conjunction with the focal length switching mechanism of the system means.

According to the camera for both silver halide photography and electronic imaging of the present invention, electronic imaging means including an electronic imaging optical system is incorporated in the lens protection means of the silver halide photography optical system means, and the silver halide photography optical system means is photographed. When driven to the position, the lens protection means is driven to the second position, and the electronic imaging optical system means is arranged so as to face the subject side, thereby enabling electronic imaging and the silver halide photographing optical system means. The focal length of the electronic imaging optical system can also be switched in conjunction with the focal length switching, so that a subject image having substantially the same angle of view as silver halide photography and electronic photography can be obtained.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows an external configuration of the embodiment of a camera for both silver halide photography and electronic imaging according to the present invention at the time of non-photographing. FIG. 1 (a) is a front view, FIG.
2B is a top view, and FIG. 2 shows an external configuration of the embodiment of the camera for both silver halide photography and electronic imaging at the time of photography according to the present invention. FIG. 2A is a front view and FIG. FIG. 3B is a top view, and FIG. 3 shows an appearance configuration of one embodiment of a camera for both silver halide photography and electronic imaging according to the present invention at the time of photography.
(A) is a rear perspective view, (b) is a front view showing a configuration of an electronic imaging optical system provided on a lens protection cover, and (b) of FIG. 4 is an overall configuration of a silver halide photography and electronic imaging camera according to the present invention. FIG. 5 to FIG. 7 are flowcharts for explaining the operation of the camera for both silver halide photography and electronic imaging according to the present invention.

In FIG. 1, the appearance of the camera for both silver halide photography and electronic imaging of the present invention (hereinafter referred to as the camera of the present invention) in the non-photographing state (the power supply for driving the camera is off) will be described. In the camera of the present invention, a release button 1 is provided on the upper left side when viewed from the front of the camera, and on the upper right side,
A slide-type power switch 2 for turning on / off the supply of driving power from a power supply battery (not shown) for driving various functions built in the camera of the present invention, and a strobe light emitting unit 3 to be described later are popped up. A flash pop-up switch 4 for control is provided, and a flash light emitting unit 3 capable of pop-up for irradiating a subject with flash light is provided substantially in the center of the upper surface. FIG.
Indicates that the power switch 2 is off and the strobe light emitting unit 3 is stored. A seesaw type zoom up / down switch 5 for changing the focal length of a later-described silver halide photographing lens to zoom up / down the subject is provided on the left side in the figure on the back of the camera body. At a substantially central portion of the front of the camera body, there is provided a silver halide photography lens barrel exterior part 6 having a built-in lens barrel containing a silver halide photography lens group.
A lens cap 7 for protecting the silver halide photographing lens group is provided at the front end of the lens unit so as to be freely fitted. The lens cap 7 has a hinge receiver 8 fixed to a lens cap hinge 9 having a base end fixed to the outside of the silver halide photographing lens barrel exterior part 6, and the lens cap 7 is mounted around the lens cap hinge 9. It is provided at the front end of the silver halide photographing lens barrel exterior part 6 so as to be freely opened and closed. The lens cap 7 is provided with an electronic imaging function to be described later, and a central front part of the lens cap 7 in a state where the lens cap 7 is fitted and mounted on the silver halide photographing lens barrel exterior part 6 is described below. A monitor 10 such as a liquid crystal element for displaying an image of an electronically captured subject is provided.

When the power switch 2 of the camera according to the present invention having such a configuration is turned on, as shown in FIG. 2, the silver halide photographing lens barrel built in the silver halide photographing lens barrel exterior portion 12 is provided. The unit 12 (hereinafter, also referred to as a silver halide photographing optical system) is extended and stopped at a photographing initial position, for example, a short focus position 13, as shown in FIG. By the extension of the silver halide photography lens barrel 12, the fitting of the lens cap 7 at the distal end of the silver halide photography lens barrel exterior 6 is released, and the lens cap 7 is pushed open about the lens cap hinge 9 as a center. As shown in FIG. 2B, the stop is maintained at a position rotated by about 180 degrees. At an approximate center of the fitting surface of the lens cap 7 with the silver halide photographing lens barrel exterior part 6, an opening for taking in a subject light beam into an electronic imaging optical unit of an electronic imaging function to be described later, and the opening are arranged. A cover glass 11 for protecting the electronic imaging optical unit is provided.

That is, in the camera of the present invention, a lens cap 7 to be fitted to the tip of the silver halide photographing lens barrel exterior part 6 is rotatably fixed by a lens cap hinge 9. An electronic imaging function including an electronic imaging optical unit, an electronic imaging element, an electronic imaging signal processing circuit, an electronic imaging image monitor, and the like is provided. When the power switch 2 provided on the camera body is turned on to take a photographing state, the silver halide photographing lens barrel unit 12 built in the silver halide photographing lens barrel exterior unit 6 is extended to an initial photographing position. The lens cap 7 is attached to and detached from the silver halide photography lens barrel exterior 6, and is pivotally opened about the lens cap hinge 9, so that the silver halide photography lens barrel 12 and the lens cap 7 are in a substantially parallel state. Maintained and fixed. Thereby, the subject can be photographed by the electronic imaging function built in the silver halide photographing lens barrel 12 and the lens cap 7.

In this state in which the subject can be photographed, the silver halide photographing lens barrel 12 and the electronic imaging function built in the lens cap 7 are relatively close to each other, so that the parallax Can be reduced.

The silver halide photographing lens barrel 12 of the camera according to the present invention has a zoom mechanism, and when the photographing lens is extended to the longest focal point side, the silver halide photographing lens barrel 12 is moved. When the distal end of the lens 12 is extended to the long focal position 14 shown by the dotted line in FIG. 2B, the light flux 15 incident from the subject to the electronic imaging optical system built in the lens cap 7 is a silver halide photographing lens mirror. The arrangement of the silver halide photographing lens barrel 12 and the electronic imaging function built in the lens cap 7 is set at a position where it is not kicked by the barrel 12.

Next, the rear configuration of the camera of the present invention and the operation at the time of photographing a subject will be described with reference to FIG. FIG.
As shown in FIG. 1A, a finder eyepiece 16 for a photographer to visually confirm a subject image captured by the silver halide photographing lens barrel 12 is provided in the upper part of the rear center of the camera body. Monitor 1 provided on lens cap 7
A monitor switch 17 for displaying a subject image captured by the electronic imaging function is provided at 0. Note that FIG. 3A shows a state in which the strobe light-emitting unit 3 is jumped up (pop-up) by operating the strobe pop-up switch 4.

That is, when the camera according to the present invention is in a shooting state, the cover glass 11 side for protecting the electronic imaging optical unit of the electronic imaging function provided on the lens cap 7 is directed to the subject, and is provided on the lens cap 7. Monitor 10
Is turned to the photographer side, and the photographer checks the subject captured by the silver halide photographing lens barrel unit 12 through the finder eyepiece unit 16, and the lens cap 7 is displayed by the image displayed on the monitor 10. The subject imaged by the electronic imaging function built in the camera can be confirmed.

As shown in FIG. 3 (b), the electronic imaging optical section incorporated in the lens cap 7 is provided with a switching mechanism for switching the electronic imaging optical system. An electronic image pickup device 43 is provided inside a substantially central portion of the lens cap 7.
Are provided, and a rotary lens holding member 61 is provided in which electronic imaging lenses having different focal lengths for projecting a light flux of a subject to the electronic imaging device 43 are arranged. The wide lens group 39, the standard lens group 40, and the wide lens group 39 are arranged on the circumference in the radial direction from the center rotation axis of the rotary lens holding member 61.
A tele lens group 41 is provided, and the rotary lens holding member 61 is rotated about the rotation axis so that the subject light flux captured by the lens groups 39 to 41 is projected and imaged on the electronic imaging element 44. It has become.

For this reason, the rotary lens holding member 61
A gear 62 is engraved on the outer periphery of the electronic imaging lens switching motor 6 via a relay gear 65.
3 is engaged with a pinion gear 64 provided on the rotation shaft. That is, the rotation of the electronic imaging lens switching motor 63 is transmitted to the gear 62 of the rotary lens holding member 61 via the pinion gear 64 and the relay gear 65,
The rotary lens holding member 61 is driven to rotate, and the lens groups 39 to 4 provided on the rotary lens holding member 61 are rotated.
1 is stopped at a position where the subject light beam is projected onto the electronic image sensor 43.

The electronic imaging lens switching motor 63 uses a DC or pulse motor capable of rotating in the forward or reverse direction, and detects the rotational position of the rotary lens holding member 61 (not shown). The rotation position is detected by a sensor, and the rotation and stop positions of the rotary lens holding member 62 are controlled based on the detected position information.

Next, the internal structure of the camera of the present invention will be described with reference to FIG. The silver halide photographing lens barrel outer portion 12 includes a drive mechanism for driving the silver halide photographing lens barrel 12 and a silver halide photographing optical member provided in the silver halide photographing lens barrel 12. I have. The silver halide photographing lens barrel 12 includes a focus lens group 21 for focusing, which is a silver halide photographing optical system, a so-called zoom lens group 22 for changing the focal length, and the focus lens group 21 and the zoom lens. A stop 23 is provided between the groups 22.

The focus lens group 21 of the photographing lens barrel 12 is moved on the optical axis by a focus driving mechanism 24 to focus a subject image.
3 controls the transmission aperture of the subject light beam on the optical axis to adjust the light beam of the subject incident on the silver halide photographing lens barrel 12 by the aperture driving mechanism 25, and the zoom lens group 22 The focal length is changed by moving on the optical axis by the zoom drive mechanism 26.

The focal length of the zoom lens group 22 built in the silver halide photographing lens barrel 12 is 2
It can be changed between 8 mm and 110 mm. The focus drive mechanism 24, the aperture drive mechanism 25, and the zoom drive mechanism 26 are drive-controlled based on a control signal from a sequence controller 54, which will be described later, and include a focus lens group 21, an aperture 23, and a zoom lens group. It also has 22 current position detection sensors, and is driven and controlled from each current position detected by this current position detection sensor to a desired position.

A quick return mirror 27 is provided behind the silver halide photographing lens barrel 12 on the optical axis. The quick return mirror 27 switches the projection of the subject light beam incident from the silver halide photographing lens barrel 12 between the film side and the finder side, and the center of the quick return mirror 27 is a semi-transmissive mirror. The light transmitted through the semi-transmissive mirror is transmitted to a sub-mirror 2 provided on the rear surface at the center of the quick return mirror.
At 8, the light is reflected downward at a right angle in the figure. This submirror 2
The light beam reflected by 8 is incident on the distance measuring means 29. The distance measuring means 29 separates the subject image reflected by the sub-mirror 28 into two images, and calculates the subject distance from the subject image separated by the two images. A shutter device 30 is disposed behind the quick return mirror 27. The shutter device 30 is driven by a shutter driving mechanism 31 with a focal plane shutter,
The subject light flux captured by the silver halide photographing lens barrel 12 is exposed to a silver halide film 32 (hereinafter simply referred to as a film) to expose a subject image. This film 32
The film drive mechanism 33 performs film driving such as frame advance of the film exposed and photographed and rewinding of the film after photographing is completed.

The luminous flux reflected by the quick return mirror 27 is projected onto a focusing screen 34, and a pentaprism 35 that converts the luminous flux displayed on the focusing screen 34 into an erect image.
Through the finder eyepiece 36.

The quick return mirror 27 and the sub-mirror 28 are controlled by a mirror driving mechanism 37 to drive up and down. FIG. 4 shows a state in which the mirror drive mechanism 37 controls the quick return mirror 27 and the sub mirror 28 to be driven down. In this state, most of the subject light flux from the silver halide shooting lens barrel 12 is reflected by the quick return mirror 27 and projected on the focusing screen 34, the pentaprism 35, and the finder eyepiece 36, and the subject light flux is Thus, a part of the luminous flux of the subject passes through the quick return mirror 27, is reflected by the sub mirror 28, and is projected on the distance measuring means 29. When the quick return mirror 27 and the sub-mirror 28 are up-driven by the mirror driving mechanism 37, the luminous flux of the subject from the silver halide photographing lens barrel 12 is projected onto the film 32 via the shutter device 30. Is done.

The distance measuring means 29, the shutter driving mechanism 31, the film driving mechanism 33 and the mirror driving mechanism 37
Is driven and controlled based on a control drive signal of the sequence controller 54.

An electronic image pickup optical system 38 provided on the rotary lens holding member 61 is provided in the lens cap 7.
And an electronic image pickup apparatus including a switching drive system for the electronic image pickup optical system 38 and an electronic image signal drive processing system for generating an electronic image pickup image signal based on a subject light beam captured by the electronic image pickup optical system. .

The electronic imaging optical system 38 provided on the rotary lens holding member 61 includes a wide lens group 39, a standard lens group 40. The electronic photographing optical system 38 has three lens groups, namely, a tele lens group 41.
At 41, one lens group is selected according to the focal length set by the silver halide photographing optical system 12. When the focal length of the silver halide shooting optical system 12 is 28 mm ≦ f <40 mm, the lens groups 39 to 41 of the electronic imaging optical system 38 are converted to the wide lens group 39 (converted to the focal length of the silver halide shooting optical system 12). Is selected, and the focal length of the silver halide photographing optical system 12 is 40 mm ≦ f <80 mm.
In the case of (1), the standard lens group 40 (having an angle of view of a focal length of 40 mm in terms of the focal length of the silver halide shooting optical system 12) is selected, and the focal length of the silver halide shooting optical system is 80 mm
When ≦ f ≦ 110 mm, the telelens group 41 (having an angle of view of a focal length of 80 mm in terms of the focal length of the silver halide photographing optical system 12) is selected.

An electronic image pickup device (hereinafter, also referred to as an image sensor) 43 is disposed behind the electronic image pickup optical section 12 via a fixed stop 42. Since the size of the subject image captured by the electronic imaging optical system 12 and projected on the electronic imaging device 43 is much smaller than the size of the film 32, the depth of field is very deep. For this reason, even if the focusing mechanism is not used in the electronic imaging optical system 12, there is no practical problem with the image quality of the subject image that is electronically captured, so the focusing mechanism is omitted.

The electronic image pickup device 43 includes a wide, standard, or tele lens group 39 to 4 of the electronic image pickup optical system 38.
The subject light flux projected by any one of the lens groups is photoelectrically converted and converted into an image signal. The photoelectric conversion of the electronic imaging element 43 and the extraction of the photoelectrically converted image signal are performed based on a drive control signal from the image sensor drive processing circuit 43, and the image signal extracted from the electronic imaging element 43 is The image processor 98 performs signal processing such as conversion into digital image data and image signal processing to be displayed on the monitor 10.

In the electronic image pickup optical system 38, the wide lens group 39, the standard lens group 40 and the tele lens group 41 are moved by the electronic image pickup optical system switching mechanism 45.
2 and the electronic imaging device 43. The electronic imaging optical system switching mechanism 45 includes a gear 62 that rotationally drives the rotary lens holding member 61 and a relay gear 6.
Consists of five. The electronic imaging optical system switching mechanism 45 is switched by an electronic imaging optical system switching motor 46 (same as the motor 63 in FIG. 3B).

The electronic image pickup optical system switching motor 46 is driven under the control of an image processor 48 composed of a microcomputer, and the image sensor drive processing circuit 44 is also driven under the control of the image processor 48. Signal processing. Further, the image processor 48
Performs interpolation, color conversion, and data compression processing of the subject image signal data from the image sensor drive processing circuit 44, and temporarily stores the image data converted into the signal processing data in the DRAM 47,
9 (the same as the monitor 10 in FIGS. 1 and 3) displays the subject image.

This image processor 48 has a sequence
It is connected to the controller 54 and driven under the control of the sequence controller 54. The sequence processor 54 is composed of a microcomputer and controls the operation and operation of the entire camera of the present invention.

The sequence controller 54 includes:
The flash memory 50 is a storage medium for storing the subject image data temporarily stored in the DRAM 47. This flash memory 50 is loaded inside the camera body and can be removed from the camera body.

A tele switch 51, a wide switch 52, a monitor switch 53, a first release switch 55 and a second release switch 56 are connected to the sequence processor 54.

The tele switch 51 is a switch for zooming up the zoom lens 22 of the silver halide photographing optical system 12 to the long focal point side (tele side). The zoom switch 5 shown in FIG. When turned to the right, it is turned on.
The wide switch 53 is a switch for zooming down the zoom lens 22 of the silver halide photographing optical system 12 to the short focus side (wide side), and the zoom switch 5 shown in FIG. Is turned on.

The monitor switch 53 corresponds to the monitor switch 17 shown in FIG.
9 (corresponding to the monitor 10 in FIG. 3A).
A switch for controlling on / off of the display of the subject image captured in 3.

The first release switch 55 and the second release switch 56 depress the release button 1 shown in FIG. 1 and FIG. The second release switch 56 is turned on by a second stroke in which the release switch 55 is further pressed from the half-pressed state.

The operation of the camera of the present invention having the external configuration described with reference to FIGS. 1 to 3 and the internal configuration described with reference to FIG. 4 will be described with reference to FIGS. In this operation description, the drive control of each drive mechanism of the camera by the sequence controller 54 will be described. In addition, a photographing sequence, which is a basic operation of the camera of the present invention, will be described as an example.

First, when the power switch 2 of the camera of the present invention is turned on, the silver halide photography lens barrel (silver halide photography optical system) 12 is extended, and the silver halide photography lens barrel exterior It is assumed that the lens cap 7 fitted to the tip of the unit 6 is detached and set to the photographing mode located in the state of FIG. 2B.

When the power switch 2 is turned off, the silver halide photography lens barrel 12 is housed in the silver halide photography lens barrel exterior 6. At this time, the lens cap 7 is turned around the lens cap hinge 9 by the photographer, and fitted and mounted on the distal end of the silver halide photographing lens barrel exterior part 6. Thereby, protection of the frontmost lens of the silver halide photography lens barrel 12 is performed, and
The front lens of the electronic imaging optical system 38 provided in the lens cap 7 can be protected. In addition, it is also possible to attach and detach the lens cap 7 to and from the distal end of the silver halide photographing lens barrel exterior part 6 by using a motor to rotate around the lens cap hinge. In this case, the turning on and off of the power switch 2 and the extension of the silver halide photographing lens barrel 12 from the silver halide photographing lens barrel outer part 6 are linked to the retraction.

As described above, when the camera of the present invention is set to the photographing mode, it is determined in step S1 whether the tele switch 51 has been turned on. If it is determined that the tele switch 51 has not been turned on, steps S4 and subsequent steps are executed, and if it is determined that the tele switch 51 has been turned on,
In step S2, the drive of the zoom drive mechanism 26 is controlled, and the zoom lens 22 is zoomed to the telephoto side. Next, in step S3, in response to the ON operation of the tele switch 51, the electronic imaging optical system switching motor 46 is drive-controlled via the image processor 8 to switch the electronic imaging optical system 38, Switching is performed so that the subject luminous flux captured by the telelens group 41 is projected onto the electronic image sensor 43.

Next, in step S4, it is determined whether the wide switch 52 has been turned on. If it is determined that the wide switch 52 has not been turned on, steps S7 and subsequent steps are executed. If it is determined that the wide switch 52 has been turned on, the drive of the zoom drive mechanism 26 is controlled in step S5 to move the zoom lens 22. Move the zoom to the wide side.
Next, in step S6, the electronic imaging optical system switching motor 46 is driven and controlled via the image processor 8 in accordance with the ON operation of the wide switch 52, and the electronic imaging optical system 38 is switched. Switching is performed so that the subject light flux captured by the wide lens group 39 is projected on the electronic imaging element 43.

The switching operation of the electronic imaging optical system in steps S3 and S6 will be described with reference to FIG. In step S31, the zoom lens 22 of the silver halide photographing optical system 12
Is detected by a zoom position detection unit (not shown), and 28 mm ≦ f <40 m by the sequence controller 54 based on the detected position data, that is, the focal length value f.
m is determined. Focal length value f is 28 mm ≦ f <40
If the condition of mm is satisfied, the electronic imaging optical system 38 is switched to the wide lens group 39 in step S32.
In the step S31, the focal length value f is 28 mm ≦ f <4.
If the condition of 0 mm is not satisfied, it is determined in step S33 whether the focal length f satisfies the condition of 40 mm ≦ f <80 mm. If the focal length f satisfies the condition of 40 mm ≦ f <80 mm, the electronic imaging optical system 38 is switched to the standard lens group 40 in step S34. If the focal length f does not satisfy the condition of 40 mm ≦ f <80 mm in step S33, the focal length f is set to 80 mm ≦ 80 mm ≦ f <80 mm.
It is determined that f <110 mm, and the electronic imaging optical system 38 is switched to the telelens group 41 in step S35.

As a result of the determination in step S31, if the electronic imaging optical system 38 is switched to the wide lens group 39 in step S32, the switching to the wide lens group 39 has already been performed. Step S
As a result of the determination in step S33, when the electronic imaging optical system 38 is switched to the standard lens group 40 in step S34, the switching to the standard lens group 39 has already been performed, or the result of the determination in step S33. , Step S3
When the electronic imaging optical system 38 is switched to the tele lens group 41 in step 5, if the switching is set to the tele lens group 41, the setting state is maintained without switching the lens groups 39 to 41.

Returning to FIG. 5, in step S7, it is determined whether or not the monitor switch 53 is turned on. If it is determined that the monitor switch 53 is turned off, steps S13 and thereafter are executed, and the monitor switch 53 is turned on. In step S8, the luminance of the subject is measured by photometric means (not shown), and based on the measured subject luminance value (photometric value), an appropriate exposure of the electronic imaging optical system is determined in step S9. A value (integration time of the electronic image sensor 43) is calculated. Next, in step S10, the electronic imaging optical system 38
The subject image projected from the image sensor is photoelectrically converted by the electronic image sensor 43, and the image sensor drive processing circuit 44 generates the subject image signal photoelectrically converted by the image sensor drive processing circuit 44 with the exposure value calculated in step S9. In step S11, image display signal processing for displaying the subject image signal generated in step S10 on the image monitor 49 (monitor 10) as a subject image is performed.

The image display signal processing in step S11 will be described with reference to FIG. The image display signal generated in step S10 is subjected to a trimming process in step S41. As described in the above-described steps S31 to S35 in FIG. 6, for example, when the focal length of the silver halide photographing optical system 12 is f = 35 mm, the electronic imaging optical system 38 uses the wide lens 39 (converted). Focal length fd = 2
8 mm) is selected, the range of the subject of the subject image signal generated by the photoelectric conversion by the electronic imaging device 43 is wider than the range of the subject actually exposed on the surface of the film 32. If there is a difference between the subject range exposed on the surface of the film 32 and the subject range photoelectrically converted by the electronic image sensor 43 and displayed on the image monitor 49, the photographed contents of the silver halide photography are electronically photographed. Misconception occurs when confirming with an image. For this reason, a portion wider than the silver halide photographing range of the subject image signal of the electronic imaging in which the range of the subject is obtained wider is trimmed.

The subject image signal of the electronic image trimmed in step S41 is subjected to image scale-up processing in step S42. In this image scale-up process, when the subject image signal trimmed in step S41 is displayed on the image monitor 49 in a state after trimming, the image displayed on the screen of the image monitor 49 is trimmed with the trimmed portion. The non-trimmed portion is displayed at the same time, and the image of the non-trimmed portion is displayed smaller overall. Therefore, in step S41, the subject image signal in the electronic imaging range after the trimming, which is substantially the same as the silver halide shooting range, is enlarged, and enlargement processing is performed so that the image signal is displayed on the entire screen of the image monitor 49. Specifically, the electronic imaging image signal after trimming is converted into the focal length f of the silver halide imaging optical system 12 and the electronic imaging optical system 3.
The scale is scaled up to f / fd times based on the converted focal length fd of 8.

Returning to FIG. 5, using the trimmed electronic picked-up image signal scaled up in step S42, the image is displayed on the image monitor 49 in step S12.

Next, in step S13, it is determined whether the first release switch 55 of the release button 1 is turned on. When it is determined that the first release switch 55 is off, the process returns to step S1, and when it is determined that the first release switch 55 is on, the drive control of the distance measuring unit 29 is performed in step S14. Then, the distance to the subject is measured. On the basis of the value measured in step S14, the drive of the focusing drive mechanism 24 is controlled in step S15, and the focus lens 21 is moved on the optical axis to focus. Next, in step S16, the luminance of the subject is measured by a photometric unit (not shown), and an exposure calculation is performed in step S17 based on the photometric value.

This exposure calculation determines an appropriate exposure value of the electronic image pickup optical system (integration time of the electronic image pickup element 44) and an appropriate exposure value of the silver halide image pickup optical system (aperture value and shutter time).

Next, in step S18, it is determined whether or not the second release switch 56 of the release button 1 has been turned on. If it is determined that the second release switch 56 is off, it is determined in step S19 whether the first release switch 55 is on. If it is determined that the first release switch 55 is on, the process proceeds to step S19. Step S
Returning to 18, when it is determined that the first release switch 55 is off, the process returns to step S1.

If it is determined in step S18 that the second release switch 56 is ON, in step S20, the drive of the mirror driving mechanism 37 is controlled to flip up the quick return mirror 27 and the sub mirror 28 (mirror up). In step S21, the aperture drive mechanism 25 is driven and controlled based on the exposure value calculated in step S17, and the aperture 23 is used to control the aperture of the silver halide photographing optical system 12. In step S22, the aperture is controlled. Based on the exposure value calculated in S17, the shutter drive control mechanism for silver halide photography is drive-controlled to drive the shutter device 30 to expose the subject image to the film 32 and to calculate in step S17. The electronic image pickup device 4
In step 3, the subject image signal photoelectrically converted is taken in simultaneously. The subject image signal generated by the electronic image sensor 43 in step S22 is temporarily stored in the DRAM 47.

Next, in step S23, the diaphragm drive mechanism 25 is driven and controlled to drive the diaphragm device 23 to the open state. In step S24, the mirror drive mechanism 37 is driven and controlled, and the quick return mirror 27 and the sub mirror 28
Is mirror-down, and the drive of the film drive mechanism 33 is controlled in step S25 to wind up the photographed frames of the film 32.

After the film 32 has been wound in step S25, the electronic image pickup device 43 performs photoelectric conversion at the time of exposure in step S22 in step S26, and
Based on the subject image signal temporarily stored in 47, signal processing for displaying the subject image on the image monitor 49 is performed. The image display signal processing on the image monitor 49 in step S26 is the same as that in step S11, and the processing shown in FIG. 7 is performed.

When the image display of the electronically captured object image is performed on the image monitor 49 in step S27, the object image signal data of the image displayed on the image monitor 49 is subjected to data compression processing in step S28. S29
To write and store data in the flash memory 50. When the storage and writing of the image data in the flash memory 50 are completed, the process returns to step S1.

As described above, the camera of the present invention
An electronic imaging optical system having a plurality of optical lens groups having different focal lengths, and an electronic imaging system including an electronic imaging element and an image monitor are provided in a lens cap of a silver halide shooting optical system. The lens cap is rotated so that the electronic imaging system and the silver halide imaging optical system are in a substantially parallel state so that the electronic imaging optical system provided on the object side and the image monitor are located on the photographer side. . According to the focal length selected and set by the silver halide photographing optical system in the subject photographing state, the electronic imaging optical system is selected and set from the optical lens group having three types of focal lengths, so that the silver halide photographing optical system and It is possible to minimize the difference in the focal length of the electronic imaging optical system. For this reason, the difference between the shooting range (shooting angle of view) of the silver halide shooting and the electronic imaging is also minimized, and the shooting range of the electronic imaging in which the shooting range slightly larger than the silver shooting range is matched with the silver shooting range. Can be shortened. When scaling up the electronic image of the subject range after the trimming and enlarging and displaying it on the entire screen area of the image monitor, the image monitor needs to be scaled up in order to scale up the part with a small trimming range and a lot of subject image data. Since the deterioration of the displayed image quality is reduced and the silver halide photography and the electronic imaging are performed at the same time, the synchronization of the photographed objects can be ensured.

In the above description of the embodiment of the camera of the present invention, the focal length of the electronic imaging optical system is selected in accordance with the focal length of the silver halide photographing optical system, that is, in accordance with the angle of view of silver halide photography. The angle of view selection of the electronic imaging is based on the focal length of the silver halide photographing optical system, so-called electrical interlocking control in which optical lens groups having different focal lengths of the electronic imaging optical system are selectively driven by electrical control. Used, but in addition to this electrical interlock control,
Drive control of the focal length of the silver halide photographing optical system, for example, mechanical interlocking control in which a link or a string connected to a zoom drive mechanism is used to interlock and selectively drive an optical lens group having a different focal length of the electronic imaging optical system. Can also be used.

[0065]

The camera for both silver halide photography and electronic imaging according to the present invention can perform silver halide photography and electronic imaging at the same time, thereby ensuring the simultaneousness of silver halide photography and electronic imaging of the subject, as well as the subject of silver halide photography. According to the angle of view, by selecting the electronic imaging optical system and selecting and setting the optical system of the object angle of view closest to the silver halide photography, the angle of view difference between the silver halide photography and the electronic imaging is minimized. After cropping the minimum difference in the angle of view, the scale-up process is performed and displayed on the image monitor.The angle of view for silver halide shooting and the angle of view displayed on the image monitor are the same, and the image monitor after trimming is displayed on the image monitor. This has the effect of reducing a decrease in image quality of an image displayed in a scale-up manner.

[Brief description of the drawings]

FIG. 1 shows an external configuration of an embodiment of a camera for both silver halide photography and electronic imaging according to the present invention during non-photographing.
(A) is a front view, FIG.1 (b) is a top view.

FIG. 2 shows an appearance configuration of the embodiment of a camera for both silver halide photography and electronic imaging according to the present invention at the time of photography.
(A) is a front view, FIG.2 (b) is a top view.

FIG. 3 shows an appearance configuration of the embodiment of the camera for both silver halide photography and electronic imaging according to the present invention at the time of photography.
3A is a rear perspective view, and FIG. 3B is a front view showing a configuration of an electronic imaging optical system provided on a lens protection cover.

FIG. 4 is a block diagram showing an overall configuration of a camera for both silver halide photography and electronic imaging according to the present invention.

FIG. 5 is a flowchart illustrating the operation of the camera for both silver halide photography and electronic imaging according to the present invention.

FIG. 6 is a flowchart illustrating the switching operation of the electronic imaging optical system of the camera for both silver halide photography and electronic imaging according to the present invention.

FIG. 7 is a flowchart illustrating an operation of monitor display signal processing of the camera for both silver halide photography and electronic imaging according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Release button 2 ... Power switch 5 ... Zoom up / down switch 6 ... Silver halide photography lens barrel exterior part 7 ... Lens cap 9 ... Lens cap hinge 10 ... Monitor 11 ... Cover glass 12 ... Silver halide photography lens barrel 43 ... Electronic imaging elements 39 to 41 ... Electronic imaging optical lens group 61 ... Circular lens holding member

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/225 H04N 5/225 Z // H04N 101: 00 101: 00 F term (Reference) 2H018 AA32 2H101 BB07 DD28 FF02 2H104 AA18 5C022 AA13 AB12 AB23 AC03 AC06 AC31 AC41 AC67 AC69 AC74 AC78 AC80

Claims (3)

[Claims] 1. A silver halide photographing optical system for forming and exposing a subject image on a silver halide film, a first position for protecting the silver halide photographing optical system when the subject is not photographed, At the time of photographing, a lens protection unit capable of taking a second position for photographing a subject by the silver halide photographing optical system unit; and a second position at the time of photographing the subject, which is built in the lens protection unit. Electronic imaging means for electronically imaging the subject when the image is taken. 2. The electronic imaging device includes: an optical lens and an electronic imaging device for imaging a subject; and a monitor that displays a subject image based on a subject image signal generated by the electronic imaging device. 4. The method according to claim 1, wherein when the lens protection unit is positioned at a second position for photographing the subject, the subject is placed on the subject side with the optical lens and the electronic imaging device on the subject side, and the monitor is located on the photographer side. 2. The camera according to 1 which is used for both silver halide photography and electronic imaging. 3. A silver halide photographing optical system means for exposing a subject image on a silver halide film and having a focal length switching function, and a first protection means for protecting the silver halide photography optical system means when the subject is not photographed. And a second position for photographing the subject by the silver halide photographing optical system means when photographing the subject. The lens protecting means is built in the lens protecting means, and the lens protecting means is used for photographing the subject. An electronic imaging means for electronically imaging the subject when the second position is taken; and a built-in lens protection means, and interlocking with a focal length switching mechanism of the silver halide photographing optical system means, An electronic imaging optical system unit having a function of switching the angle of view of a subject image incident on the electronic imaging unit, and a camera for both silver halide photography and electronic imaging.