JP2001154256A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera capable of improving the visibility of display on a photographic image plane within a finder without being deceived by a photographing subject, the color of a photographic scene and the color of illuminating light. SOLUTION: In the camera provided with a colorimetry means 102 performing the colorimetry of photographic field and a display means 21 displaying the condition of the camera on the photographic field image plane of the finder by emitting the light of plural kinds of emitted light wavelength, the color temperature of the photographic field is decided based on the colorimetric information from the colorimetry means 102 and the emitted light wavelength in the display means 21 is controlled based on the color temperature information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a camera having a function of displaying camera status information on a viewfinder shooting scene screen of the camera.

[0002]

2. Description of the Related Art Hitherto, many cameras having a function of displaying the state of a camera on a viewfinder shooting scene screen of the camera have been proposed.

[0003] For example, a camera has been proposed in which focus detection is performed on a plurality of focus detection areas in a photographic screen and a photographic lens is focused on one of the plurality of focus detection areas. The gazette proposes a camera that displays, among a plurality of focus detection areas in a shooting screen, a focusing area obtained by focusing a shooting lens on a shooting screen in a viewfinder.

[0004]

However, the camera displayed on the photographing screen in the viewfinder is usually 64 cameras.
Red LE with emission wavelength around 0 nm (nanometer)
The display is illuminated with D, and there is a problem that the display on the photographic screen is difficult to see depending on the photographic subject and the photographic scene due to the single-wavelength red illumination.

[0005] That is, this case corresponds to a case where the main subject is red, or a case where the shooting scene is in the evening and illuminated with red natural light.

An object of the present invention is to control an illumination display so as to improve the visibility of a display on a photographing screen in a viewfinder without affecting a photographing subject, a color of a photographing scene, and a color of illumination light. Another object of the present invention is to provide a camera for controlling a light emitting element for lighting display.

[0007]

According to a first aspect of the present invention, there is provided a display means for displaying display information for displaying a state of a camera on a finder photographing scene screen at a plurality of emission wavelengths, and a photographing scene. And a light emission wavelength determining means for determining the light emission wavelength of the display means based on the colorimetric information of the colorimetric means.

[0008] In a second aspect, the emission wavelength determining means includes:
It is characterized in that the color temperature of the photographic field is determined, and the emission wavelength of the display means is determined based on the color temperature information.

According to a third aspect of the present invention, there is provided a display means for displaying the state of a camera on a finder photographing scene screen as characters or symbols and displaying the state of the camera at a plurality of emission wavelengths. And a display color determining means for determining a display color of the display means based on the colorimetric information of the color measuring means.

In a fourth aspect based on the third aspect, the display color determining means determines a color temperature of a photographic field and determines a display color of the display means based on the color temperature information. It is characterized by being.

According to a fifth aspect of the present invention, in any one of the above-mentioned inventions, the colorimetric means measures only the photographic field in the vicinity of a display position displayed by the display means.

According to a sixth aspect of the present invention, in any one of the above aspects, the display means indicates a focus detection area.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIGS.
FIG. 1 shows a single-lens reflex camera according to a first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a photographing lens, which is indicated by two lenses for convenience, but is actually constituted by a larger number of lenses. ing.

Reference numeral 2 denotes a main mirror which is inclined to the photographing optical path or retreated depending on the viewfinder observation state and the photographing state.

Reference numeral 3 denotes a sub-mirror which reflects a light beam transmitted through the main mirror 2 downward of the camera body.

Reference numeral 4 denotes a shutter, and reference numeral 5 denotes a photosensitive member, which comprises a silver halide film, a solid-state image pickup device such as a CCD or MOS type, or an image pickup tube such as a vidicon.

Reference numeral 6 denotes a focus detection device, which is a field lens 6a, reflection mirrors 6b and 6 arranged near the image plane.
c, a secondary imaging lens 6e, an aperture 6d, a line sensor 6f including a plurality of CCDs, and the like.

The focus detection device 6 in the present embodiment uses a well-known phase difference method.

FIG. 3 is a view showing a finder field of view of the camera according to the present embodiment.
28 corresponding to the left focus detection area mark 91, the right focus detection area mark 92, the upper focus detection area mark 93, and the lower focus detection area mark 94, respectively.
, The center area F0, the left area F1, the right area F2, the upper area F3, and the lower area F4 are configured to be capable of focus detection.

Reference numeral 7 denotes a focusing plate disposed on a predetermined image forming plane of the photographing lens 1, and 8 denotes a pentaprism for changing a finder optical path.

Reference numerals 9 and 10 denote an imaging lens and a photometric colorimetric sensor for measuring the luminance of each subject in the photographing screen, respectively. The imaging lens 9 is connected to the focusing plate 7 via a reflection optical path in a pentaprism 8. The photometric sensor 10 is associated with a conjugate.

Here, the photometric colorimetric sensor 10 is an optical sensor divided into 12 × 18 areas in each of vertical and horizontal directions as shown in FIG. 5, and one area of each is R, G, B as shown in FIG.
Is a CCD having a total of 648 pixels consisting of a three-color filter and three pixels corresponding to each filter below the three-color filter.

At the time of the exposure calculation of the camera, the R, G, and B pixel outputs are combined so that the photographic field is 12 pixels wide and 12 pixels wide, respectively.
The photometric operation is performed by dividing the image into 18 areas, and the colorimetric operation is performed at the time of color measurement by using the R, G, and B pixel outputs in each divided area.

In the viewfinder view shown in FIG. 3, the photometric colorimetric sensor 10 shown in FIG.
From the photometric pixels AE (0,0) divided into 18 areas
A virtual photometry area corresponding to E (17, 11) is shown.

The boundaries in FIG. 3 are imaginary lines, and these lines cannot be seen in an actual finder.
Here, the 12 × 18 photometry area is the focus detection area F0 to F
The areas AE0 to AE4 each having a 4 × 4 photometry area as one block correspond to each of the four areas, and the AE5 area as another area is configured as a divided photometry block actually used for photometry calculation. .

As shown in FIG. 1, an eyepiece 11 is arranged behind the exit surface of the pentaprism 8 and is used for observing the focus plate 7 with the eyes of the photographer.

The main mirror 2, the focus plate 7, the pentaprism 8, and the eyepiece 11 constitute a finder optical system.

Reference numeral 21 denotes a light emitting element, which is a high-brightness LED (SI-LED 21) that can be visually recognized even in a bright subject.
A red 21a chip having a light emission center wavelength of 64 nm (nanometer) and a green chip 21b having a light emission center wavelength of 560 nm are mounted one by one inside the package, so that red and green light can selectively emit light. It is possible.

Reference numeral 22 denotes an LCD in which the positions of the five focus detection areas are patterned (hereinafter referred to as SI-LCD).
Only the LCD pattern corresponding to the position where the focus detection area is selected is in the transmitting state, and the light emitted from the SI-LED 21 behind the LCD is the SI-LCD 22
Passes through only the transmission pattern described above, reaches the photographer's eyeball 15 through the eyepiece 11 via the light projecting lens 23 and the half mirror 24, and the photographer visually checks the focus detection area display pattern on the finder screen. I can do it.

That is, as can be seen from the finder field diagram shown in FIG. 3, at least one of the focus detection area marks 90 to 94 corresponding to the focus detection areas F0 to F4 shines in the finder field, and the selected focus is selected. The detection area can be displayed.

The half mirror 24 has a light wavelength of 400
It has a characteristic of a reflectance of 20% uniformly from nm to 700 nm, guides the red or green light of the SI-LED 21 to the eyeball 15 of the observer, and the light from the photographing lens 1 has a transmittance of 80%. The photographer can observe the image as a viewfinder image.

Reference numeral 25 denotes an LCD in a finder (hereinafter, referred to as an F-LCD) for displaying photographing information outside the finder field of view, and is illuminated by an illumination LED 26.

The light transmitted through the F-LCD 25 is guided by the triangular prism 27 to a display section outside the finder field of view as shown in FIG. 3, so that the photographer can know various photographing information. Here, 28 is a segment for displaying the shutter speed, 29 is a segment for displaying the aperture value, and 30 is a focusing mark indicating the focusing state of the taking lens 1.

Referring back to FIG. 1, reference numeral 31 denotes an aperture provided in the taking lens 1, reference numeral 32 denotes an aperture driving device including an aperture driving circuit 111 described later, reference numeral 33 denotes a lens driving motor, and reference numeral 34 denotes a lens comprising a driving gear and the like. It is a driving member.

Reference numeral 35 denotes a photocoupler, which is a lens driving member 3
4 to detect the rotation of the pulse plate 36 and transmit it to the lens focus adjustment circuit 110.
The lens drive motor is driven by a predetermined amount based on this information and the information on the lens drive amount from the camera side, and the photographing lens 1 is moved to the in-focus position.

Reference numeral 37 denotes a mount contact which serves as an interface between a known camera and a lens.

FIG. 2 is a block diagram showing an electrical configuration incorporated in the single-lens reflex camera having the above-described configuration. Components that are the same as those in FIG. 1 are denoted by the same reference numerals.

A central processing unit (hereinafter referred to as a CPU) 100 of a microcomputer built in the camera body includes a photometric colorimetric circuit 102, an automatic focus detection circuit 103, a signal input circuit 104, an LCD drive circuit 105, and an LED drive circuit 1.
06, shutter control circuit 108, motor control circuit 1
09 is connected.

Signals are transmitted to the focus adjusting circuit 110 and the aperture driving circuit 111 arranged in the taking lens via the mount contact 37 shown in FIG.

EEPROM 10 attached to CPU 100
0a has a storage function of storing various adjustment data.

The photometric colorimetric circuit 102 drives the photometric colorimetric sensor 10, amplifies the luminance signal of the 648-pixel CCD sent from the photometric colorimetric sensor 10, then performs logarithmic compression and A / D conversion. Then, as luminance information of each pixel area, C
Transmit to PU100.

The line sensor 6f is a well-known C constituted by five sets of line sensors CCD-0 to CCD-4 corresponding to five distance measurement areas 70 to 74 in the finder screen.
It is a CD line sensor.

The automatic focus detection circuit 103 A / D converts the voltage obtained from the line sensor 6f and sends it to the CPU.

SW-1 (12) is a photometric switch that is turned on by the first stroke of the release button to start photometry and AF operation, SW-2 (13) is a release switch that is turned on by the second stroke of the release button, and SW -DIAL1 and SW-
DIAL2 (15) is a dial switch provided in a rotary operation member (not shown), which is input to an up / down counter of the signal input circuit 104, and counts a rotation click amount of the rotary operation member.

The signals of these switches are applied to the signal input circuit 10
4 and transmitted to the CPU 100 via the data bus.

Reference numeral 105 denotes a known LCD drive circuit for driving the liquid crystal display element LCD, and displays an aperture value, a shutter time, a set photographing mode, and the like according to a signal from the CPU 100. And the LCD (F-LCD) 25 in the finder and the SI-LCD 22 for superimposing can be simultaneously controlled and displayed.

The LED driving circuit 106 is a lighting LED.
(F-LED) 26 emits light, and further SI-LED 21
With respect to, selective emission of red 21a and green 21b is also controlled.

The shutter control circuit 108 controls the magnet MG-1 for running the front curtain and the magnet MG-2 for running the rear curtain when energized, and exposes the photosensitive member to a predetermined amount of light.

The motor control circuit 109 controls the motor M1 for winding and rewinding the film and the motor M2 for charging the main mirror 2 and the shutter 4.

The shutter control circuit 108 and the motor control circuit 109 operate a series of camera release sequences.

Next, the operation of the entire camera according to the present embodiment will be described with reference to the flowchart shown in FIG.

This embodiment will be described based on the case where the shutter priority AE is set.

When the camera is set to a predetermined photographing mode from the non-operation state, the power of the camera is turned on (step # 100), and the release button is pushed in and the switch SW1 (1) is turned on.
Wait until 2) is turned on (Step # 101).

When the signal input circuit 104 detects that the release button has been pressed and the switch SW1 has been turned on, C
The PU 100 performs mutual communication with the lens mounted on the camera, and lens information necessary for the camera to perform photometry and AF, for example, information such as the opening FNO. The data is transferred to the memory (step # 102).

Next, five sets of line sensors CCD-0 to C are provided.
The CD-4 starts the accumulation operation of the field light and calculates the defocus amount, that is, the image shift amount DEF0 to DEF4 of each sensor corresponding to the current photographing screen (Step # 103).

The process of obtaining the defocus amount is known, and the description is omitted here.

Next, in order to perform focus detection, it is confirmed whether the focus detection area selection switch 14 is in the automatic mode or the manual mode (step # 104).

If the focus detection area selection is set to the automatic mode, a focus detection area automatic selection subroutine (step # 105) is performed based on the defocus amounts DEF0 to DEF4 in the five focus detection areas. One of the five focus detection areas F0 to F4 is selected.

Several methods are conceivable as an algorithm for automatic selection of the focus detection area, but a near-point priority algorithm in which weighting is applied to the central focus detection area, which is known for a multipoint AF camera, is effective.

When the focus detection area selection switch 14 is
N to enter the focus detection area selection manual mode,
When the photographer operates the switch dial 15, the focus detection area F
It is possible to arbitrarily select one out of the five from 0 to F4 (step # 106).

As described above, the focus detection area is determined automatically by the camera or manually input by the photographer to determine the focus detection area (step # 107).

Next, in the determined focus detection area, the automatic focus detection circuit 103 performs a focus detection calculation to determine whether or not the focus detection area can detect the focus (step # 108).
If not possible, the CPU 100 sets the LCD drive circuit 105
To flash the focus mark 30 on the LCD 24 in the finder to warn the photographer that the focus detection is NG.

On the other hand, if the focus can be detected and the focus adjustment state of the focus detection area selected by a predetermined algorithm is not in focus, the CPU 100 sets the lens focus adjustment circuit 11
A signal is sent to 0 to drive the taking lens 1 by a predetermined amount (step # 109).

After driving the lens, it is determined whether or not the photographing lens 1 is in focus (Step # 110).

Here, if it is determined that the object is in focus, the CPU 10
In step # 111, a signal is transmitted to the photometric colorimetric circuit 102 to perform photometry (step # 111).

At this time, the focused focus detection areas F0 to F4
The photometric calculation is performed by weighting one of the divided photometric blocks AE0 to AE4 corresponding to any one of the focus detection areas.

For example, the photometric calculation value E when the central focus detection area F0 of the five focus detection areas is determined to be the in-focus area is obtained when the photometric outputs of the divided photometric blocks AE0 to AE4 are ae0 to ae5, respectively. It is obtained by the following equation.

E = (2 * ae0 + ae1 + ae2 + ae
3 + ae4 + 4 * ae5) / 10 Here, each output of ae0 to ae5 indicates the photographing lens aperture value (F5.6) 29 using the segment and the decimal point as the photometric calculation result in the present embodiment. .

At the same time, the CPU 100 processes the R, G, and B signals received from the photometric colorimetric circuit 102 to calculate the color temperature of the photographic subject.
1 is determined.

The details of the color measurement process will be described later.

Next, the photographing lens 1 in the focus detection area
Is in focus, the CPU 100 sends a signal to the LCD drive circuit 105 to turn on the focus mark 30 of the LCD 25 in the finder and to drive the LED drive circuit 106
To turn on the superimposed LED 21 in red or green to illuminate the focused focus detection area segment from among the focus detection area marks 90 to 94 corresponding to the focus detection area. In-focus display is performed (Step # 113).

Next, it is determined whether or not the photographer has accepted the focus state and the photometric value in the focus detection area by the switch SW1.
Judgment is made by N and OFF (Step # 114), and it is further judged whether or not the release button is depressed and the switch SW2 is ON. If the switch SW2 is OFF, the state of the switch SW1 is confirmed again. (Step # 115).

When the switch SW2 is turned on, the CPU 100 transmits signals to the shutter control circuit 108, the motor control circuit 109, and the aperture drive circuit 111, respectively.

First, the motor M2 in the motor control circuit 109 is energized, the main mirror 2 is raised, and the stop 3
After stopping down the aperture 1, the magnet MG1 in the shutter control circuit 108 is energized to open the front curtain of the shutter 4.

The aperture value of the aperture 31 and the shutter speed of the shutter 4 are determined from the exposure value detected by the photometric circuit 102 and the sensitivity of the film 5.

After the lapse of a predetermined shutter time (1/125 second), the magnet M in the shutter control circuit 108
G2 is energized to close the rear curtain of shutter 4.

When the exposure of the film 5 is completed, the motor M2 in the motor control circuit 109 is energized again.
Mirror down and shutter charge are performed, and at the same time, the motor M1 in the motor control circuit 109 is energized to feed the film frame, and a series of shutter release sequence operations is completed (step # 116).

Thereafter, the camera switches the switch SW1 to the O position again.
Wait for N (step # 101 return).

Here, a detailed description of the colorimetry calculation (step # 112) in the camera sequence, which is the main content of the present embodiment, will be made with reference to the flowchart of FIG.

When the CPU 100 sends a command for measuring the photographing field light to the photometric colorimetric circuit 102, the photometric colorimetric circuit 102 drives the photometric colorimetric sensor 10 (step # 200).

Next, the photometric colorimetric circuit 102 has a total of 648 R, G, and G pixels of the photometric colorimetric sensor 10 corresponding to the photographic field light.
Extract the B luminance signal and transfer it to CPU 100 (step # 201).

648 R · Rs transferred to CPU 100
The G / B luminance signal is corrected in advance by an output correction value for level adjustment performed at the time of initial adjustment of the camera, and further, output correction for interchangeable lens accuracy is performed based on lens information obtained by communication between the lens mounted on the camera and the camera. By being corrected by the value,
A correct RGB luminance signal corresponding to the photographing scene can be obtained (Step # 202).

Assuming that the luminance signal outputs from the light receiving sections having the R, G, and B sensitivities are X, Y, and Z, respectively, the chromaticity coordinates xy are obtained by the following equation (Step # 203).

X = X / (X + Y + Z) y = Y / (X + Y + Z) FIG. 8 is a diagram showing the complete radiator trajectory and the isochromatic temperature line. From the xy value obtained from the above equation, it is possible to determine the color temperature by determining which isochromatic temperature line is to be laid on (Step # 2
04). Of course, this calculation is programmed in the ROM of the CPU 100.

When the color temperature of the photographic field is determined, the CPU 1
00 is a superimposed LED (SI-LED) 2
The light emission color for one preset color temperature is determined (Step # 205).

In this embodiment, two SI-LEDs 21 are provided.
It is a color LED and can emit red light with a central emission wavelength of 640 nm (nanometer) and green light with a central emission wavelength of 560 nm. Therefore, the color temperature is divided into 2 at 3100k (Kelvin), and when the color temperature is 3100k or more, the red LED
Is turned on, and when the color temperature is lower than 3100 k, the green LED is turned on to illuminate the focus detection area segment that has come into focus from among the focus detection area marks 90 to 94 to perform focus display.

In the above description, the R, G, and B luminance signals of all 648 pixels of the photometric colorimetric sensor 10 are processed in step # 203, but the focus detection area F0 determined in step # 107 of FIG. AE0 to AE4 corresponding to at least one focus detection area among F4 to F4
Only the R, G, and B luminance signals of pixels (4 × 3 pixels in this case) corresponding to at least one photometry area are processed to determine the color temperature, and the color temperature is determined. By lighting the SI-LED in red or green according to the color temperature, it is possible to further improve the visibility of the focus detection area mark on the background of the photographing object scene.

(Second Embodiment) Next, a second embodiment of the present invention will be described.
An embodiment will be described.

FIG. 9 and FIG. 10 are diagrams according to a second embodiment when the present invention is applied to a digital camera.

FIG. 9 is a schematic view of a digital camera having an external color liquid crystal monitor.

A photographing lens 50 has two lenses 50a and 50b for convenience.

Reference numeral 51 denotes an optical finder composed of lenses 51a and 51b. Unlike the TTL method according to the first embodiment, the external finder 51 does not involve the light beam of the photographing lens 50.

Reference numeral 53 denotes a CCD which is an area sensor. Field light passing through the photographing lens 50 forms an image on a chip of the CCD 53.

Reference numeral 54 denotes a CPU, and a CCD drive circuit 55
And the CCD 53 is driven to photoelectrically convert the object scene image.

Further, from the CCD 53, the photoelectrically converted field luminance signal is sent to the CPU 5 via a CCD drive circuit 55.
After being input to the A / D converter 4 and subjected to A / D conversion and the like, the image is further subjected to amplification processing and the like by the image control circuit 58, sent to the LCD drive circuit 56, and displayed on the external color liquid crystal monitor 52 as an image of a photographed scene.

Incidentally, reference numeral 59 denotes a removable memory card which is an image recording medium, and the image data recorded on the memory card 59 can be reproduced by the external color liquid crystal monitor 52.

It is assumed that the digital camera of the present embodiment uses the same focus detection device and photometric colorimetric sensor of the camera of the first embodiment.

FIG. 10 schematically illustrates an image on the external color liquid crystal monitor 52 of the digital camera according to the present embodiment.

The main subject in FIG. 10 stands at the background of the sunset, and the portions other than the main subject are covered with the red light of the sunset.

The color temperature of the main object is calculated based on the color temperature calculation method according to the first embodiment by processing the RGB luminance signals corresponding to the photometry area AE2 in FIG.
00k is calculated, and the focus detection area mark 61 is lit red.

Further, the camera shutter time TV: 125 is displayed at the upper right of the background portion photographing screen (60). This display color is obtained by processing RGB light signals corresponding to the photometry area AE5. It is displayed in blue because it was calculated to be 2700k.

As described above, when the photographed scene image of the present digital camera is displayed on the external color liquid crystal monitor 52, the display color of the display of photographing information and the like is different from the background color temperature. By doing so, it is possible to display the shooting information with good visibility.

In the first and second embodiments, the description has been made with the focus detection area marks 90 to 94 and the numerical value at the shutter speed of second in the photographing object scene of the camera as specific display objects. It goes without saying that any other characters, symbols, etc. of the message, which are displayed in the photographing object scene of the camera, fall within the scope of the present invention.

[0104]

According to the present invention, the color temperature of the photographic field is determined based on the signal of the colorimetric means, the emission wavelength of the light emitting element of the display means is determined, and the emission control of the light emitting element is performed. And performing display control to determine the color temperature of the photographic field based on the signal of the colorimetric unit and to determine the display color of the display unit, thereby obtaining the photographic subject, the color of the photographic scene, and illumination. It is possible to improve the display visibility on the photographing scene screen in the viewfinder without being concerned with the color of light.

Further, the colorimetric means measures the color of only the photographic subject range near the display position displayed by the display means, so that the photographic subject in the finder can be obtained without disturbing the photographic subject and the photographic scene. It is possible to improve the display visibility on the field screen.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a single-lens reflex camera showing a first embodiment according to the present invention;

FIG. 2 is an electric circuit diagram of the camera showing the first embodiment according to the present invention.

FIG. 3 is a viewfinder view showing the first embodiment according to the present invention.

FIG. 4 is a flowchart of a camera operation according to the first embodiment of the present invention.

FIG. 5 is a photometric colorimetric sensor showing the first embodiment according to the present invention.

FIG. 6 is an enlarged view of a photometric colorimetric sensor showing the first embodiment according to the present invention.

FIG. 7 is a flowchart of a colorimetric calculation showing the first embodiment according to the present invention;

FIG. 8 is an xy chromaticity diagram showing the first embodiment according to the present invention.

FIG. 9 is a schematic view of a digital camera showing a second embodiment according to the present invention.

FIG. 10 is a diagram showing an example of an external liquid crystal display of the digital camera according to the second embodiment of the present invention.

[Explanation of symbols]

 1: photographing lens 6: focus detection device 6f: image sensor 7: focus plate 10: photometric colorimetric sensor 11: eyepiece 100: CPU 102: photometric circuit 103: focus detection circuit F0 to F4: focus detection area

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H002 DB17 FB51 FB58 2H102 AA44 AA71 BA05 CA11 5C022 AB06 AB22 AC03 AC13 AC42 AC52 AC54 AC74 5C065 AA03 BB08 BB11 DD16 DD17 EE01 EE02 EE12 FF02 FF03 GG32

Claims (6)

[Claims] 1. A display means for displaying display information for displaying a state of a camera on a finder photographing scene screen at a plurality of emission wavelengths; a colorimetric means for measuring the photographing scene color;
And a light emission wavelength determining means for determining an emission wavelength of the display means based on the colorimetric information of the colorimetric means. 2. The light-emitting wavelength determining unit determines a color temperature of a photographed scene, and determines a light-emitting wavelength of the display unit based on the color temperature information. The described camera. 3. A display means for displaying the state of the camera on a viewfinder shooting scene screen as characters or symbols and displaying at a plurality of emission wavelengths, and measuring the shooting scene. And a display color determining unit that determines a display color of the display unit based on the colorimetric information of the color measuring unit. 4. The display color determining means according to claim 3, wherein the display color determining means determines a color temperature of a photographed scene, and determines a display color of the display means based on the color temperature information. The described camera. 5. The colorimetric unit according to claim 1, wherein the colorimetric unit measures the color of only the photographic field near the display position displayed by the display unit. Camera. 6. The camera according to claim 1, wherein the display unit indicates a focus detection area.