JPH0887051A - Camera - Google Patents

Abstract

PURPOSE: To provide a camera which can offer a picture in which an excessive brightness range is suppressed. CONSTITUTION: The camera is provided with a lens 21 for photography which forms the image of a subject, a spatial optical modulation element 10 which has two or more reflecting surfaces reflecting the luminous flux from the lens 21 and can changeably direct the relected luminous flux to a first direction and the other directions for each reflecting surface, a light-sensitive member 23 placed in the first direction, a photometric means 27 which measures the luminance distribution of the subject, a luminance region detecting means 26 which divides the luminance distribution into a first region within a specified luminance range and the other region, an exposure period setting means 25 which sets a first exposure period corresponding to the luminance in the first region and a second exposure period corresponding to the luminance in the other region, and a drive means 24 which casts the reflecting direction of the reflecting surface corresponding to the first region to the first direction only during the first exposure period and the reflecting direction of the reflecting surface corresponding to the other region to the first direction only during the second exposure period.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera which uses a spatial light modulator for changing the direction of a reflected light beam in a shutter mechanism and suppresses an excessive light-dark ratio on a photograph.

[0002]

2. Description of the Related Art Generally, in AE photography by a camera, automatic exposure setting is performed according to subject brightness. A like this
With E shooting, you can enjoy shooting easily without the need for complicated exposure calculations.

In recent years, in order to set a more accurate exposure, a camera that multi-division photometers at a plurality of places within a photographing range is known. In such a camera, the photometric mode is selected depending on the situation of the subject and the intention of photographing.

For example, in the average photometry mode, the exposure is set based on the average value of a plurality of photometric values. Therefore, the exposure can be adjusted on average over the entire screen. In the center-weighted metering mode, the exposure is set based on the metering value in the center of the screen, but since the main subject is often located in the center of the screen, you can easily adjust the exposure to the main subject. be able to.

Further, in the low brightness priority photometry mode, the exposure is set with reference to the photometry value of the lowest brightness among a plurality of photometry values. Therefore, the exposure can be adjusted to a low-luminance portion such as a backlit state or a shade.

In the high-luminance priority photometry mode, the exposure is set based on the photometric value of the highest brightness. Therefore, when shooting with spot illumination, the exposure can be easily adjusted to the illuminated location.

[0007]

However, in the conventional camera, when a subject having a large contrast ratio is photographed,
There is a problem that it exceeds the latitude (exposure tolerance) of the photosensitive member.

For example, in the case of the subject shown in FIG. 8, if the exposure is adjusted to a bright background, the person in the shade of the tree will be underexposed, and the details of the person will be lost, or the image will look dark.

On the other hand, if the exposure is adjusted to the shade of a dark tree, the light background becomes overexposed, the blue sky appears white, and the details of the mountain surface cannot be expressed. In addition, if the exposure is adjusted to an intermediate exposure, both the person and the background are photographed with improper exposure.

As described above, in the conventional camera, it is necessary to sacrifice light or dark exposure for an object having a large light / dark ratio. The reproducibility was extremely poor, resulting in an unnatural picture.

Therefore, it is an object of the present invention to provide a camera capable of taking a photograph while suppressing an excessive contrast ratio of a subject.

[0012]

According to a first aspect of the present invention, there is provided a reflecting surface having a photographing lens for forming an optical image of a subject and a plurality of reflecting surfaces for reflecting the light flux passing through the photographing lens. A spatial light modulation element capable of changing the direction of the reflected light flux for each direction to the first direction and other directions, a photosensitive member arranged in the first direction, a photometric means for measuring the luminance distribution of the subject, and A luminance region detecting unit that divides the luminance distribution into a first region within a predetermined luminance range and other regions; and a first exposure period corresponding to the luminance of the first region, and
An exposure period setting means for setting a second exposure period corresponding to the brightness of the other region, and a direction of a light flux reflected by the reflecting surface corresponding to the first region is directed to the first direction only during the first exposure period,
It is characterized by further comprising a spatial light modulator driving means for directing the direction of the light flux reflected by the reflecting surface corresponding to the other region only in the second exposure period.

According to a second aspect of the present invention, in the camera of the first aspect, the spatial light modulating element is a digital micromirror element in which a plurality of reflecting mirrors are arranged on the surface of the substrate in a variable tilt. Characterize.

According to a third aspect of the present invention, in the camera according to the first or second aspect, the plurality of reflecting surfaces of the spatial light modulator are arranged on the image forming surface of the taking lens, and the photosensitive member and the photosensitive member are provided. It is characterized in that a lens on the photosensitive member side is disposed between the spatial light modulator and the spatial light modulator to image the reflected light beam in the first direction at the position of the photosensitive member.

According to a fourth aspect of the present invention, in the camera of the third aspect, the photometric means is arranged in another direction to receive the subject light, the light receiving section and the spatial light modulator. And an image forming lens which is disposed between the two and forms an image of the reflected light beam in the other direction by the spatial light modulation element at the position of the light receiving portion.

According to a fifth aspect of the present invention, in the camera according to any one of the first to fourth aspects, a finder for visually observing the subject, and a visual area visually observed by a photographer in the finder field of view. The visual area detection means for detecting, the luminance area detection means, the luminance range within the latitude of the photosensitive member when the luminance of the visual area is properly exposed, the predetermined luminance range. Is characterized by.

[0017]

In the camera of the first aspect, the photometric means measures the luminance distribution of the object, and the luminance area detecting means divides the first area within the predetermined luminance range based on the measured luminance distribution.
The first region divided in this way has a limited brightness range, and thus has a small contrast ratio.

The exposure period setting means sets a separate exposure period corresponding to each luminance in the first region and the other region. On the other hand, the light flux incident from the taking lens reaches the reflecting surface of the spatial light modulator. The driving means is
The reflecting surfaces corresponding to the first region and the other regions are individually driven to expose the photosensitive member for the exposure period of each region.

As described above, the first region having a small contrast ratio,
It is possible to take a photograph in which the excessive light-dark ratio of the subject is suppressed by dividing the light-sensitive member into the other regions having a large light-dark ratio and exposing the photosensitive member in the corresponding exposure periods.

In the camera of the second aspect, as the spatial light modulation element, a digital micromirror element in which a plurality of reflection mirrors are arranged on the substrate in a variable tilt is used. Therefore, the driving unit can change the direction of the reflected light flux by driving the tilt angle of the reflection mirror.

In the camera of the third aspect, since the reflecting surface is arranged on the image forming surface of the taking lens, when the reflecting surface is divided and driven, the boundary portion of the optical image is clearly divided, and the boundary portion of the optical member is directed. Is reflected. The reflected light forms an optical image on the photosensitive member via the lens on the photosensitive member side. With such a configuration, the boundary portion where the exposure is switched does not overlap on the photosensitive member and is clearly divided.

According to another aspect of the camera of the present invention, the light flux reflected by the spatial light modulator in other directions is passed through the imaging lens.
A subject image is formed on the light receiving portion of the photometric means. The photometric means is
The subject image is metered to detect the brightness distribution.

This subject image is the same as the subject image formed on the photosensitive member and has no parallax. Therefore, the luminance region detecting means can accurately divide the boundary portion of the luminance region.

In the camera of the fifth aspect, the photographer can designate the main subject by gazing at the subject in the viewfinder field. When the luminance of the main subject is adjusted to the proper exposure, the range within the latitude of the photosensitive member is set as the first region. Therefore, the first area is determined centering on the main subject specified by the photographer, and the other areas having a large contrast ratio are exposure-corrected.

[0025]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a diagram showing a first embodiment corresponding to claims 1 and 2.

First, an example of the digital micromirror device 10 used in this embodiment will be described first. The digital micromirror device is based on “Nikkei Electronics 19
93.6-21 "(p. 65, published by Nikkei BP).

FIG. 2 is a diagram showing an example of a digital micromirror element. FIG. 2A is a top view of the device. On the surface of the substrate 10a, a minute aluminum mirror 11 having a side of about 17 μm is laid on, for example, about 640 × 480 pixels.

2B to 2D are cross-sectional views of the aluminum mirror 11 in the diagonal direction (AA '). Posts 12a and 12b are projected on the substrate 10a, and diagonals of the aluminum mirror 11 are individually supported by the posts 12a and 12b. The electrode 1 is placed on the substrate 10a so as to face the other corner of the aluminum mirror 11.
3, 14 are provided.

In the digital micromirror device having such a structure, the aluminum mirror 11 is mounted on the substrate 10a when the columns 12a and 12b and the electrodes 13 and 14 are at the same potential.
Parallel to (Fig. 2 (b)).

When a potential difference is applied between the columns 12a and 12b and the electrode 13, the aluminum mirror 11 tilts toward the electrode 13 side due to the Coulomb attractive force of the charged charges (FIG. 2).
(C)).

On the other hand, when a potential difference is applied between the columns 12a and 12b and the electrode 14, the aluminum mirror 11 tilts toward the electrode 14 side (FIG. 2 (d)). In this way, the voltage applied to the electrodes 13 and 14 makes it possible to tilt the aluminum mirror 11 and change the reflection direction of incident light.

It should be noted that circuits for individually driving the aluminum mirrors 11 are formed on the substrate 10a, and the tilt direction of the aluminum mirrors 11 can be individually changed by giving address information or the like for individually designating these circuits. Further, by scanning the address information, the tilt direction of the aluminum mirror 11 can be changed in the scanning order.

A circuit for storing the tilt direction (for example, a flip-flop circuit or a capacitor for storing the tilt direction depending on the presence / absence of electric charge) may be provided for each circuit for individually driving the aluminum mirror 11. In such a circuit, the tilt direction of each aluminum mirror 11 is stored in advance and the tilt directions of the aluminum mirror 11 can be temporarily changed by setting the voltages of the electrodes 13 and 14 at the same timing.

Since the aluminum mirror 11 has a small mass and a small displacement, the tilting time is as short as about 10 μsec. Therefore, in such a minute time, the photosensitive reaction of the photosensitive member can be ignored.

Since the aluminum mirror 11 has a high reflection efficiency, the light utilization efficiency is higher than that of the liquid crystal.
The configuration of this embodiment will be described below with reference to FIG.

In the figure, on the optical axis of the taking lens 21,
Digital micromirror device 1 which is a spatial light modulator
The substrate 10a of 0 is arranged to be inclined. The photosensitive member 23 is arranged in a direction in which the optical axis of the taking lens 21 is geometrically regularly reflected with respect to the substrate 10a.

A drive circuit 24, which is a drive means for changing the inclination of the aluminum mirror 11 (shown in FIG. 2), is connected to the digital micromirror element 10, and the drive circuit 24 has an exposure period setting means for setting an exposure period. Is connected to the exposure period setting circuit 25.

Further, the exposure period setting circuit 25 is connected to a brightness area detecting circuit 26 which is a brightness area detecting means for dividing an object by brightness, and the brightness area detecting circuit 26 is connected to a photometric circuit 27 which is a photometric means. To be done.

The photometric circuit 27 is connected to a light receiving element 27a composed of, for example, a CCD, and an imaging lens 27b is arranged in front of the light receiving element 27a. Further, a black light absorbing plate 28 is arranged at a position where the light flux deviated from the photosensitive member 23 is irradiated.

FIG. 3 is a flow chart showing divided exposure in the first embodiment. The operation of this embodiment will be described below with reference to this figure. The drive circuit 2 is used in a state where no image is taken.
In No. 4, a voltage is applied to one electrode 13 of the digital micromirror element 10 to incline the minute aluminum mirror 11 on the substrate 10a toward the electrode 13 side.

Therefore, the subject light incident from the taking lens 21 is reflected by the aluminum mirror 11 of the digital micromirror element 10 and is applied to the light absorbing plate 28. On the other hand, the subject light incident from the imaging lens 27b forms a subject image on the surface of the light receiving element 27a.

The light receiving element 27a photoelectrically converts the subject image and outputs it to the photometric circuit 27. The photometric circuit 27 detects the brightness distribution of the subject based on this output (step S).
1). The luminance region detection circuit 26 takes the average value of the luminance distribution and sets it as the representative value of the subject luminance. When the representative value is set to the proper exposure, a brightness range that falls within the latitude of the photosensitive member 23 is obtained, and a region within this brightness range is detected as the first region as shown in FIG. 4 (step S2).

The first area shown in FIG. 4 is an area corresponding to the background portion of the subject shown in FIG. The exposure period setting circuit 25 sets the first exposure period for properly exposing the representative value (step S3). In addition, a second exposure period within the latitude of the photosensitive member is set according to the brightness of other areas (step S4).

When a shutter button (not shown) is pressed in this state (step S5), the drive circuit 24 causes the electrodes 13 and 14 of the aluminum mirror 11 and the column 12 corresponding to the first region to be pushed.
a and 12b are set to the same potential, and the aluminum mirror 11 is attached to the substrate 10a.
Parallel to.

Therefore, the subject light in the first area is reflected by the aluminum mirror 11 and is applied to the photosensitive member 23. When the first exposure period ends, the drive circuit 24 causes the aluminum mirror 1
The voltage is applied again to the first electrode 13 to tilt the aluminum mirror 11. Therefore, the light flux deviates from the photosensitive member 23 (step S6).

Similarly, the aluminum mirrors 11 corresponding to the other areas are driven, and the photosensitive member 23 is exposed to light for the second exposure period (step S7). In this way, with the camera of this embodiment, it is possible to take a photograph in which an excessive light-dark ratio is suppressed by dividing an area having a high light-dark ratio and exposing each of them.

In this embodiment, it is preferable to dispose the digital micromirror element 10 in the vicinity of the photosensitive member 23. With such a structure, the boundary portion of the divided exposure does not overlap on the photosensitive member and is clear. Can be divided into Also,
On the contrary, when blurring the boundary portion, it is preferable to dispose the digital micromirror element 10 away from the photosensitive member 23.

FIG. 5 is a diagram showing a second embodiment corresponding to claims 1, 2, 3, and 4. In the figure, a digital micromirror element 10, which is a spatial light modulator, is arranged on the image plane of the taking lens 21.

The digital micromirror element 10 has a drive circuit 2 for changing the inclination of an aluminum mirror 11 (shown in FIG. 2).
4 is connected, and the drive circuit 24 is connected to an exposure period setting circuit 25 that sets an exposure period. In addition, the exposure period setting circuit 25 is connected to a luminance region detection circuit 26 that divides the subject according to the luminance.

First of Digital Micromirror Element 10
The photosensitive member side lens 31 is arranged in the reflection direction of, and the photosensitive member 23 is arranged at an image forming position on the extension thereof. On the other hand, an image forming lens 27d is arranged in the other reflection direction of the digital micromirror element 10, and a light receiving element 27c which is a light receiving portion is arranged at an image forming position on an extension thereof.
A photometric circuit 27 is connected to the light receiving element 27c.

FIG. 6 is a flow chart showing the operation in the second embodiment. The operation of this embodiment will be described below with reference to this figure. The drive circuit 24
Is one electrode 1 of the digital micromirror device 10.
A voltage difference is applied between 3 and the columns 12a and 12b to reflect the light flux incident from the taking lens 21 in the other reflection directions.

Such a reflected light flux forms an image forming lens 27d.
A subject image is formed on the light receiving element 27c via the. The subject image is photoelectrically converted by the light receiving element 27c and taken into the photometric circuit 27 as a luminance distribution (step S1).

The luminance region detection circuit 26 takes the average value of the luminance distribution and sets it as the representative value of the subject luminance. When the proper exposure is adjusted to this representative value, a brightness range that fits within the latitude of the photosensitive member is obtained, and a region within this brightness range is detected as the first region (step S2).

The exposure period setting circuit 25 sets the first exposure period for properly exposing the representative value (step S).
3). Further, the second exposure period within the latitude of the photosensitive member 23 is set corresponding to the brightness of the other regions (step S4).

When the shutter button is pressed in this state (step S5), the drive circuit 24 sets the electrode 13 of the aluminum mirror 11 and the columns 12a and 12b corresponding to the first region to the same potential, and applies a voltage to the electrode 14. Apply.

Of the subject image formed on the reflecting surface of the digital micromirror element 10, the reflected light flux of the first region is
An image is formed on the photosensitive member 23 via the photosensitive member side lens 31. When the first exposure period ends, the drive circuit 24 applies a voltage again to the electrode 13 of the aluminum mirror 11 to bring the electrode 14 and the columns 12a and 12b to the same potential. Therefore, the reflected light flux deviates from the photosensitive member 23.

In this way, the subject image in the first area is
The photosensitive member is exposed only for the first exposure period (step S
6). Similarly, the aluminum mirror 1 corresponding to other areas
1 is driven, and the subject image in the other region is exposed on the photosensitive member for the second exposure period (step S7).

With such a configuration, the same effects as those of the first embodiment can be obtained in the second embodiment. In the second embodiment, since the digital micromirror element 10 is arranged on the image forming surface of the photographing lens 21, the areas to be divided and exposed are not overlapped and can be clearly divided.

Since the subject image formed on the light receiving element 27c is the same as the subject image formed on the photosensitive member 23 and parallax does not occur, the luminance region can be accurately detected.

FIG. 7 is a diagram showing a third embodiment corresponding to claims 1, 2, 3, 4, and 5. In this embodiment, the finder-side lens 41a and the eyepiece window 4 which compose the finder.
1b, a wavelength selection mirror 42a is arranged, and in the direction in which the incident light from the eyepiece window 41b is reflected by the wavelength selection mirror 42a, the half mirror 42b and the condenser lens 42c.
And the light receiving element 42d is arranged. Further, an infrared light emitting element 42e is arranged at a position for irradiating the half mirror 42b with light, and a line-of-sight detecting circuit 42 is connected to the light-receiving element 42d to form a line-of-sight detecting means. The luminance region detection circuit 26 is connected to the line-of-sight detection circuit 42.

In the figure, the same components as those of FIG. 5 are designated by the same reference numerals and the description thereof will be omitted. In the camera having such a configuration, the infrared light emitting element 42e
The weak infrared light due to is reflected by the half mirror 42b and the wavelength selection mirror 42a, and is emitted to the photographer's eyes. This infrared light is reflected by the cornea portion of the eyeball of the photographer, passes through the half mirror 42b and the condenser lens 42c, and forms a bright spot on the light receiving element 42d. The line-of-sight detection circuit 42 detects the position of this bright spot and obtains the rotation amount of the eyeball to detect the gaze position of the photographer.

The luminance region detection circuit 26 detects the subject brightness at this gaze position via the photometric circuit 27 and sets the value as the representative value of the subject brightness. Hereinafter, as in the above-described embodiment, a region having a large contrast ratio is divided from the subject image,
The photosensitive member is exposed during the exposure period set in each area.

Also in the camera of this embodiment, it is possible to obtain substantially the same effects as those of the first and second embodiments. Further, in this embodiment, the main subject can be easily designated by the photographer's gaze, the exposure is matched with the main subject as a reference, and the exposure amount of the portion having a large contrast ratio is corrected with respect to the main subject. can do.

In the above-described embodiment, the predetermined luminance range is determined by using the average value of the luminance distribution as the representative value, but the present invention is not limited to this. For example, the luminance of the central portion of the photographing range is the representative value. Alternatively, the value of low brightness or high brightness in the brightness distribution may be used as the representative value. further,
The brightness range may be a predetermined fixed range, or the brightness range may be selected according to the type and characteristic curve of the photosensitive member.

Further, in the above-described embodiment, the subject is divided into two areas, but the present invention is not limited to this, and other areas may be a plurality of areas, for example, a first area within a predetermined brightness range. , An underexposed area below a predetermined brightness range,
It is also possible to detect an overexposed region having a predetermined luminance range or more and set an exposure period according to each region. With such a configuration, the subject image can be subdivided according to the brightness, the exposure period can be corrected, and a visually natural photograph can be taken.

Furthermore, in the above-described embodiment, the contrast ratio of the subject is suppressed, but the invention is not limited to this, and the contrast ratio of the subject can be emphasized by correcting the second exposure period in the opposite direction. .

Further, in the above-mentioned embodiment, the exposure is performed at different timings for each area, but the exposure periods for each area may be overlapped on the time axis. With such a configuration, each region of the subject can be exposed almost at the same time, so that even if a fast-moving subject is photographed, the position of the subject in each region does not shift.

Incidentally, in the above-mentioned embodiment, the taking lens 21, the photosensitive member side lens 31, and the imaging lens 27b.
May be a compound lens, or by disposing a reflecting mirror, a prism or other optical elements in the middle of the optical system, the optical path may be bent or the vertical and horizontal directions of the image may be changed.

Further, the photosensitive member 23 is covered with an openable / closable light shielding member to open the path of the incident light beam in the light shielding member before starting the exposure period and close the path of the incident light beam after the exposure period. May be provided. With such a configuration, it is possible to prevent the photosensitive member 23 from being exposed to stray light for a long time. Further, since it is sufficient that the light can be shielded at low speed and with low accuracy, the light shielding member and the light shielding member driving means can be realized by a cheap and simple mechanism.

[0070]

As described above, in the camera according to the first aspect, the screen is divided into the first region having a small light-dark ratio and the other region having a large light-dark ratio, and the exposure period corresponding to each luminance is set. Since photography is performed, it is possible to take a picture with an excessive contrast ratio.

In the camera of claim 2, since the digital micromirror element is used as the spatial light modulator,
Since the mass of the movable part is small and the displacement is small, the speed at the time of starting and braking the shutter becomes faster,
A high-speed shutter can be realized.

Further, the vibrations of these movable parts are small, and the camera shake due to the continuous shutter driving a plurality of times during the divided exposure can be reduced. In the camera according to the third aspect, since the spatial light modulation element is arranged on the image forming surface of the photographing lens, the boundary portions of the divided exposure do not overlap each other, and the exposure on the photosensitive member can be clearly divided.

In the camera of the fourth aspect, since the object image having no parallax can be obtained in the light receiving portion of the measuring means with respect to the object image formed on the photosensitive member, the brightness distribution of the object image can be measured without displacement. , The positions of the first area and other areas can be accurately detected.

In the camera of claim 5, the line-of-sight detecting means allows the photographer to easily specify a desired subject, and the exposure can be divided around the main subject. Therefore, with the camera to which the present invention is applied, it is possible to take a photograph in which an excessive contrast ratio is suppressed, and it is possible to greatly improve the detail reproducibility and color reproducibility of the photograph.

[Brief description of drawings]

FIG. 1 is a diagram showing a first embodiment corresponding to claims 1 and 2. FIG.

FIG. 2 is a diagram showing an example of a digital micromirror element.

FIG. 3 is a flowchart showing an operation in the first embodiment.

FIG. 4 is a diagram showing an example of a luminance region.

FIG. 5 is a diagram showing a second embodiment corresponding to claims 1, 2, 3, and 4.

FIG. 6 is a flowchart showing an operation in the second embodiment.

FIG. 7 is a diagram showing a third embodiment corresponding to claims 1, 2, 3, 4, and 5.

FIG. 8 is a diagram showing an example of a subject.

[Explanation of symbols]

 10 Digital Micro Mirror Element 10a Substrate 11 Aluminum Mirror 12a, 12b Support 13, 14 Electrode 21 Photographing Lens 23 Photosensitive Member 24 Drive Circuit 25 Exposure Period Setting Circuit 26 Luminance Area Detection Circuit 27 Photometric Circuit 27a Photoreceptive Element 27b Imaging Lens 31 Photosensitive Member Side lens 41a Viewfinder side lens 41b Eyepiece window 42 Line-of-sight detection circuit

Claims (5)

[Claims] 1. A photographing lens (21) for forming an optical image of an object, and a plurality of reflecting surfaces for reflecting the light flux that has passed through the photographing lens (21). A spatial light modulation element that can be changed to a first direction and another direction, a photosensitive member (23) arranged in the first direction, a photometric means (27) for measuring the brightness distribution of the subject, A luminance region detection unit (26) that divides the luminance distribution into a first region within a predetermined luminance range and other regions, and a first exposure period corresponding to the luminance of the first region is set,
Further, an exposure period setting means (25) for setting a second exposure period corresponding to the brightness of the other region, and a direction of a light flux reflected by the reflecting surface of the spatial light modulation element corresponding to the first region are set to the first region. Driving means (24) for the spatial light modulator, which directs the light beam reflected by the reflecting surface corresponding to the other region only in one exposure period in the first direction and in the first direction only in the second exposure period. ), And a camera. 2. The spatial light modulator is a substrate (10a).
The camera according to claim 1, wherein the camera is a digital micromirror element (10) in which a plurality of reflecting mirrors (11) are arranged on the surface of the lens in a variable tilt manner. 3. The plurality of reflecting surfaces of the spatial light modulation element,
The light flux reflected in the first direction by the spatial light modulation element is disposed between the photosensitive member (23) and the spatial light modulation element, the light flux being disposed on the image forming surface of the photographing lens (21). The camera according to claim 1 or 2, wherein a photosensitive member side lens (31) for forming an image is arranged at the position of the member (23). 4. The photometric means (27) is arranged in the other direction, and is arranged between the light receiving section (27c) for receiving subject light and the light receiving section (27c) and the spatial light modulator. The image forming lens (27d) for forming an image of the reflected light beam in the other direction by the spatial light modulation element at the position of the light receiving portion (27c), and the image forming lens (27d). Camera. 5. A finder (41a, 41b) for visually observing the subject, and a line-of-sight detecting means (42, 42a-e) for detecting a visual area in which a photographer visually observes within the field of view of the finder, The brightness area detecting means (26) takes in the visual area detected by the visual axis detecting means (42, 42a to e), and falls within the latitude of the photosensitive member (23) when the brightness of the visual area is properly exposed. The range of brightness
The camera according to any one of claims 1 to 4, wherein the predetermined brightness range is set.