JP2003255428A - Camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a camera capable of learning the tendency of the setting of a photographing condition and setting the photographing condition to meet the tendency. <P>SOLUTION: When a shutter button is half depressed, photometry and range- finding are performed to perform AF control and diaphragm control (steps 100 to 104). When the shutter button 12 is fully depressed, image pickup processing is performed, the number C of releasing times is counted up and also the number Cs of releasing times in accordance with the set shutter speed S is counted up (steps 106 to 112). When the number C of releasing times is equal to or above a specified threshold, the number of all the releasing times at the shutter speed in a plurality of areas previously set is counted. When there exists the area where the number of all the releasing times is equal to or above the specified number, the gravity value of the area is set as new shutter speed, and the combination of the shutter speed with a diaphragm value corresponding to the shutter speed is added to a lookup table (steps 114 to 122). <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly to a camera capable of setting a shutter speed, an aperture value and the like according to a photographer's preference.

[0002]

2. Description of the Related Art A camera provided with a program AE (automatic exposure) mode in which a shutter speed and an aperture value can be selected as a shooting condition has been conventionally known. In order to realize the combination of the aperture values, the program line showing the correspondence relationship between the shutter speed, the aperture value, and the EV value which is the exposure value is shifted, that is, the combination of the shutter speed and the aperture value is changed with the same exposure. Some have a program shift function.

In Japanese Laid-Open Patent Publication No. 6-130450, when the photographer selects the program AE mode and performs a program shift operation to take a picture, the camera itself learns the program shift tendency and responds to the shift. A camera having a learning function that stores learning program data and can easily clear the memory contents has been proposed. According to the present invention, it is not necessary to shift the program every time the photographing is started, such as when the main switch is turned on, and the program shift can be performed without turning off the main switch during the program shift. Can be cleared.

[0004]

However, in the above prior art, although the tendency of the program shift can be learned, it is not possible to set the shutter speed and the aperture value other than the shutter speed and the aperture value of a predetermined combination. There is a problem that it may not be possible to shoot under the conditions that the photographer desires.

In view of the above facts, the present invention has an object to obtain a camera capable of learning the tendency of setting the photographing condition and setting the photographing condition according to the tendency.

[0006]

In order to achieve the above object, the invention according to claim 1 is a camera capable of shooting under a plurality of predetermined shooting conditions related to at least brightness, Counting means for respectively counting the number of times of photographing when photographing under any of the photographing conditions, and a distribution of the count value based on the count value, and a tendency of the photographing condition from the calculated distribution And a specific photographing condition within the main photographing condition range and other than the plurality of predetermined photographing conditions, and the photographing can be performed by using the predetermined specific photographing condition as the photographing condition. Control means for controlling
It is characterized by having.

The camera is capable of shooting under a plurality of predetermined shooting conditions related to at least brightness, and the shooting conditions are camera setting values set in the camera. For example, as described in claim 2, , Shutter speed and / or aperture value. That is, the camera can take an image at a shutter speed and an aperture value selected from a plurality of predetermined shutter speeds and aperture values according to the brightness of the subject.

The counting means determines the number of times of photographing when photographing is performed under any one of a plurality of photographing conditions, for each photographing condition,
For example, counting is performed for each shutter speed and each aperture value.

The calculating means obtains the distribution of count values based on the count values. Then, a main photographing condition range is obtained as a tendency of the photographing condition from the obtained distribution. That is,
For example, a range of shooting conditions set at a predetermined frequency or more is obtained, and this is set as a main shooting condition range. Note that the shooting condition range includes at least two shooting conditions. It can be determined that the shooting condition range is a shooting condition that the photographer prefers to use.

The control means sets a specific shooting condition within a main shooting condition range and other than a plurality of predetermined shooting conditions. For example, a new specific shooting condition other than a plurality of predetermined shooting conditions is determined by obtaining the gravity value of the count value of the shooting conditions included in the main shooting condition range.

Then, the control means controls the predetermined specific photographing condition to be a photographing condition so that photographing can be performed. That is, new shooting conditions other than a plurality of predetermined shooting conditions are added. Accordingly, it is possible to finely set the photographing conditions within the photographing condition range that the photographer prefers to use, and it becomes possible to perform the photographing under the conditions more suited to the photographer's request.

As described in claim 3, the control means further comprises a look-up table storing a predetermined correspondence between the exposure value determined based on the photometric result of the subject and the photographing condition. By configuring the specific shooting condition to be added to the lookup table as the shooting condition, a new specific shooting condition can be added.

Further, the calculating means obtains a photographing condition of a predetermined frequency or less from the distribution, and the control means adds the specific photographing condition to the look-up table as the photographing condition. The photographing condition may be deleted from the look-up table. As a result, it is not necessary to increase the memory capacity of the lookup table in advance, and the memory capacity can be minimized, and unnecessary cost can be suppressed.

Further, a recording means for recording the look-up table on a recording medium may be further provided.
Thus, by mounting the recording medium on another camera and reading the lookup table, the other camera can easily and promptly set his / her favorite shooting condition.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this embodiment, the present invention is applied to a digital camera.

Digital camera 10 to which the present invention is applied
Is a main body 11 as shown in FIGS. 1 (A) and 1 (B).
Is substantially box-shaped, and a gripping portion for facilitating gripping of the main body 11 is formed on the left side when viewed from the front.

On the front side of the main body 11, as shown in FIG. 1A, a lens 14, a finder 15 for visually confirming a photographing range and the like, and an illumination light is emitted in the case of photographing in a low illuminance. A strobe 16 is attached for this purpose.

Between the lens 14 and the viewfinder 15,
A photometric sensor 50 and a distance measuring sensor 52 are provided.
The photometric sensor 50 measures the brightness of the subject, and the distance measuring sensor 52 measures the distance to the subject. Distance measuring sensor 52
Can measure a distance by a TTL contrast detection method using, for example, a MOS type sensor. Also, a so-called passive type or active type distance measuring sensor may be used.

On the right side surface of the main body 11 when viewed from the front,
A slot 23 into which a memory card 18 as an information recording medium such as a smart medium can be loaded is provided.

On the upper surface of the main body 11, a mode dial 47 and a power switch 21 are provided on the left side in FIG. 1A, and a shutter button 12 is provided at the center of the mode dial 47. Further, an accommodation port 28 for a battery 26 that is a power source of the digital camera 10 is provided on the left side surface of the main body 11 when viewed from the front. The battery 26 is charged by a charger (not shown).

When viewed from the front of the main body 11, on the bottom left bottom,
Screw holes 32 for fixing the digital camera 10 to the tripod
Is provided.

The mode dial 47 is a dial for selecting the operation mode of the digital camera. For example, the automatic shooting mode, portrait mode, landscape mode, sports mode, program AE mode, manual mode,
This is for selecting one of a self-timer mode, a reproduction mode, a PC mode for outputting an image by connecting to a personal computer, a setup item setting mode for setting initial conditions of various functions, and the like. The shutter button 12 is configured to be half-pressed for AF locking and fully-pressed for image processing.

In the setup item setting mode, for example, when the shooting mode such as the automatic shooting mode is set, the through image is displayed on the display 46, that is, the current shot image is displayed on the display 46 in real time. It is possible to set ON / OFF of the mode to be performed.

In the program AE mode, for example, the shutter speed and aperture value (F value) and E as shown in FIG.
A combination of the shutter speed and the aperture value corresponding to the EV value calculated from the photometric result is set according to the program line showing the correspondence with the V value. It is also possible to perform a program shift for changing the combination of shutter speed and aperture value with the same exposure. In addition, in FIG.
A program line using a taking lens with a focal length of 28 mm and a program line using a taking lens with a focal length of 70 mm are shown. In addition, the one with "" added to the upper right of the shutter speed value indicates that the unit is seconds, and the one without "" added
It indicates that the unit is reciprocal seconds.

As shown in FIG. 1B, a color display 46 composed of a reflective LCD or a transmissive LCD is attached to the lower side of the back surface of the main body 11, and an upper side of the display 46 is Monochrome liquid crystal display panel 1
Various selection buttons such as 3, a flash button 17, a cross button 19, and a menu execution button 25 are provided.

The display 46 is composed of a liquid crystal display panel having a screen size of, for example, 640 × 480 pixels, and when there is an image display instruction, a memory 4 which will be described later.
The image is displayed on the entire screen based on the image file stored in 2 or the image file read from the memory card 18, a plurality of reduced images are displayed side by side (hereinafter, referred to as thumbnail display), and various function selections are performed. Display the screen. The liquid crystal display panel 13 displays the current settings of the digital camera such as operation mode, image quality, battery amount, strobe light emission / non-light emission, and the number of shootable images.

The cross button 19 is a button for selecting a button displayed on the display 46 or moving a cursor when the display 46 is a various item selection screen. The strobe button 17 is a button for issuing a compulsory flash instruction when the strobe is forcibly fired, or for issuing a flash prohibition instruction when the strobe is forbidden to fire, and the menu execution button 25 is a menu screen for performing various settings. And a button for issuing an execution instruction of the item displayed on the display 46 and selected by the cross button 19.

FIG. 2 shows the configuration of the electric system of the digital camera 10. Specifically, the lens 14 is a zoom lens (focal length variable lens) including a mechanism (auto focus (AF) mechanism) capable of changing the focal position by the driving force of a driving source such as a stepping motor.
The mechanism and the zoom mechanism are driven by the drive circuit 24a. The drive circuit 24a also controls the drive of various components such as the drive of the strobe 16 and an image pickup device 30 as an image pickup element described later. Further, instead of the lens 14, a fixed focal length lens having only an AF mechanism may be used.

An image pickup device 30 made up of an area CCD and provided with an electronic shutter mechanism is arranged at a position corresponding to the focal position of the lens 14 inside the main body 11, and the image pickup device 30 is reflected from a subject and made incident on the lens 14. The light is focused on the light receiving surface of the imaging device 30.

The image pickup device 30 may use a MOS type sensor capable of integrally forming an image processing unit instead of the CCD. As a result, data can be read out faster than the CCD.

The image pickup device 30 is driven by the drive circuit 24a, and the drive circuit 24a drives the image pickup device 30 at a timing synchronized with the timing signal generated by the timing signal generation circuit 27 to generate an image signal (on the light receiving surface). A signal indicating the amount of light received by each of the plurality of photoelectric conversion cells arranged in a matrix.

The timing signal generation circuit 27 is controlled by the control unit 22 composed of a microcomputer and generates various timing signals (clock signals) for operating the image pickup device 30, the A / D conversion unit 38 and the like.

Further, the image pickup device 30 converts the image signal into
The signal is output to the analog signal processing unit 36 via an amplifier (not shown). The analog signal processing unit 36 is connected to the A / D conversion unit 38, and the signal output from the imaging device 30 is amplified by the amplifier and converted into digital data by the A / D conversion unit 38.

The output terminal of the A / D converter 38 is connected to the digital signal processor 40 through a correlated double sampling circuit (CDS circuit) not shown and an internal interface (I / F) circuit not shown in order. . In the CDS circuit,
The feedthrough data indicating the level of the feedthrough signal and the pixel data indicating the level of the pixel signal are sampled, and the feedthrough data is subtracted from the pixel data for each pixel. Then, the calculation result (pixel data that accurately corresponds to the amount of accumulated charge in each CCD cell) is sequentially output to the digital signal processing unit 40 as a scan image file via the I / F circuit.

The digital signal processing section 40 performs predetermined digital signal processing (for example, shading correction processing) on the input digital signal and outputs it as an original image file to the memory 42 via the data bus 88. The digital signal processing unit 40 also outputs a video signal when an external device (not shown) is connected to the video output terminal. Further, when a thumbnail display instruction is issued from the control unit 22, the digital signal processing unit 40 displays on the display 46 a plurality of thumbnail images stored in association with each of the plurality of image files stored in the memory 42. Let

The memory 42 temporarily stores an image file read for retrieval during reproduction, and a data bus 88.
The image file output from the digital signal processing unit 40 via is stored. At this time, if there is a writing instruction to the memory card 18 such as a smart media or a flexible disk, the stored image file is compressed and expanded by the compression / expansion unit 44.
After being subjected to a predetermined image compression process (for example, JPEG process), the data is output to the memory card drive 20 and written in the memory card via the external interface (external I / F) 43. The compression / expansion unit 44 can also be set to write without compression.

The external I / F 43 has a digital I / F.
An O port 31 is provided so that the image file can be output to another device connected to the digital I / O port 31.

When an instruction is given to reproduce (display) an image by the image file stored in the memory card loaded in the slot 23, the image file is read from the memory card. If the read image file is compressed and stored, the compressed image file is decompressed (decompressed) by the compression / decompression unit 44 and then stored in the memory 4
Stored in 2. Then, the digital signal processor 40 processes the image file stored in the memory 42 by the liquid crystal drive circuit 24.
The image is transferred to b and the image is displayed (reproduced) on the display 46.

The control unit 22 includes a CPU, a ROM and a RAM.
The shutter button 12, the memory card drive 20, the drive circuit 24a, the memory 42, the compression / expansion unit 44, and the display 4 directly or via the data bus 88.
6, the menu execution button 25, the photometric sensor 50, the distance measuring sensor 52, the LUT 54, and the memory 56 are connected.

The ROM stores a processing program for controlling the above-mentioned various components connected to the control unit 22. Further, the RAM stores various kinds of data necessary for the respective processing programs input via the data bus 88.

The LUT 54 stores, as table data, a program line showing the correspondence between the shutter speed and the aperture value (F value) and the EV value as shown in FIG. 4, for example. This program line is provided for each focal length of the lens. For example, as shown in FIG.
In the case of mm, the combination of shutter speed and aperture value is selected according to the photometric result according to the program line indicated by the one-dot chain line, and when the focal length is 70 mm, the shutter according to the photometric result is indicated according to the program line indicated by the solid line. A combination of speed and aperture value is selected. Further, by performing a predetermined operation, it is possible to perform a program shift in which the combination of the shutter speed and the aperture value can be changed with the same exposure value.

The memory 56 is composed of a non-volatile memory, and stores the number of releases C, which will be described later, the number of releases Cs for each shutter speed, and the like. Note that these are initialized to zero in advance.

Next, as an operation of the present invention, a control routine executed by the controller 22 will be described with reference to the flowchart shown in FIG.

The control routine shown in FIG. 3 is executed when the shutter button 12 is half pressed.

First, in step 100, photometry is performed,
The photometric value (for example, photometric brightness value) of the subject measured by the photometric sensor 50 is captured.

Next, in step 102, distance measurement is performed, and the distance measurement value up to the subject measured by the distance measurement sensor 52 is fetched.

At the next step 104, AF control and aperture control are performed. That is, the exposure value (EV value) is derived based on the captured photometric value, the shutter speed and aperture value corresponding to this exposure value are obtained from the LUT 54, and AF is performed based on the distance measurement value to focus on the subject.
Control values are determined, and these control values are output to the drive circuit 24a via the timing signal generation circuit 27. As a result, the lens 14 is driven so that the subject is in focus, and the shutter speed and aperture value are set.

At the next step 106, it is judged whether or not the shutter button 12 is fully pressed. If the shutter button 12 is not fully pressed, the determination at step 106 is negative, and at step 126, the shutter button 12 is half pressed. It is determined whether the push has been released. Shutter button 1
If the half-push of 2 is released, step 126
Is affirmative and the present routine is ended. On the other hand, if the half-press of the shutter button 12 has not been released, the determination in step 126 is negative, and the process returns to step 106 to determine whether or not the shutter button 12 has been fully pressed.

When the shutter button 12 is fully pressed, the affirmative determination is made in step 106, and in the next step 108, shooting is performed at the set shutter speed and aperture value. That is, the lens 1 is reflected from the subject.
The light incident on the image pickup device 4 is imaged on the light receiving surface of the imaging device 30. The imaging device 30 includes the timing signal generation circuit 2
The image pickup device 30 is driven at a timing synchronized with the timing signal generated by 7, and the image signal is output to the analog signal processing unit 36 via an amplifier (not shown).

The image signal subjected to the analog signal processing by the analog signal processing section 36 is amplified by the amplifier and converted into digital data by the A / D conversion section 38. This digital data is output to the digital signal processing unit 40 via a CDS circuit and an internal interface circuit (not shown) in this order. Then, the digital signal processing unit 40 performs predetermined digital signal processing, and outputs the original image file to the memory 42 via the data bus 88.

In the next step 110, the number of releases C
Is counted up. That is, the shutter button 1
The number of times the image is taken by pressing 2 fully is counted.

In the next step 112, the number of releases (count value) C corresponding to the set shutter speed S is set.
s is counted up. That is, the number of releases is counted for each set shutter speed. In the present embodiment, as shown in FIG. 4, the shutter speed can be set in 19 steps from ₃₀ to _1/8000 seconds, so the number of release times C _{30 to} C _1/8000 is counted for each shutter speed. To be done. From this release count C _{30 to} C _1/8000 , it is possible to grasp the tendency of which shutter speed is often used.

Then, in the next step 114, it is judged whether or not the release number C is equal to or more than a predetermined threshold value. This predetermined threshold value is set to a value that can grasp the tendency of which shutter speed is frequently used (for example, 100).

If the release number C is less than the predetermined threshold value, the determination at step 114 is denied and the present routine ends. On the other hand, if the number of releases C is equal to or greater than the predetermined threshold value, the determination in step 114 is affirmative, and in the next step 116, the shutter speeds of all the areas are predetermined for the plurality of areas in which the shutter speed is predetermined. Count the number of releases.

That is, the whole area of the shutter speed that can be set (the range of the shutter speed from 30 seconds to 1/8000 seconds) is divided into a plurality of areas, and the shutter speeds included in the areas are all divided into a plurality of areas. The total number of releases for each is counted. The area is, for example, an area including two adjacent shutter speeds, and the plurality of areas are set so as to overlap each other. Therefore, if the number of shutter speeds that can be set is m, (m-1) areas can be defined. For example, in the case of FIG. 4, the areas where the shutter speed is 30 seconds and 15 seconds and the shutter speed is 15
Multiple areas are defined so that the shutter speeds overlap each other, such as the second and 8 seconds areas, and the total is 1
Eight areas are defined.

The processing of step 112 corresponds to the counting means of the present invention, and the processing of steps 114 to 118 corresponds to the computing means of the present invention.

At the next step 118, for each of the plurality of areas, it is determined whether or not the total number of shutter speed releases contained in the area is a predetermined number or more. This predetermined number of times is set to the number of times that the photographer can determine whether or not he / she prefers to use a particular shutter speed, and is at least 50% or more of the predetermined threshold, for example, about 80% of the predetermined threshold. Set to the value. That is, if there is an area more than a predetermined number of times, it can be determined that the photographer particularly prefers to use the shutter speed included in that area. It is possible to determine that there is no shutter speed that the photographer particularly likes.

Then, if there is no area more than the predetermined number of times, that is, if it can be determined that the shutter speed that the photographer particularly prefers to use is not present, the determination at step 118 is denied, and 124
Then, the number of releases C and the number of releases Cs for each shutter speed are reset, that is, to 0.

On the other hand, if there is an area more than the predetermined number of times, that is, if it can be determined that the shutter speed that the photographer particularly likes and uses is present, the determination at step 118 is affirmative, and Step 1
At 20, the barycentric value (specific shooting condition) Sc of the shutter speed of the area (main shooting condition range) is obtained.

Specifically, for example, the shutter speeds of the area are a and b, and the number of release times thereof is C, respectively.
When a and Cb are set, the center-of-gravity value Sc can be calculated by the following equation.

Sc = a × {Ca / (Ca + Cb)} + b × {Cb / (Ca + Cb)} (1) For example, the predetermined threshold value is 100, the predetermined number of times is 80, and the shutter speed is 1 (second) and 2 ( If the number of times (reciprocal seconds) is used 40 times, Sc = 1 x (40/80) + 2 x (40/80) from the above formula (1).
= 1.5. The calculated center of gravity value Sc may be rounded off, rounded up, or rounded down to a predetermined digit. The average value may be used instead of the center of gravity value.

The barycentric value Sc calculated in this way
Is the center of gravity value of the shutter speed range that the photographer prefers to use. Therefore, if this can be set as the shutter speed, it is considered that the photographer's desired photographing condition can be further met. Therefore, in the next step 122, the calculated center-of-gravity value Sc is added to the LUT 54 as a new shutter speed.

The processing of steps 120 and 122 is as follows.
It corresponds to the control means of the present invention.

Specifically, a linear equation between two points determined by the shutter speeds before and after the center of gravity value Sc and the aperture values corresponding to these shutter speeds is obtained, and the center of gravity value Sc is determined from this linear equation. Aperture value Ac is calculated. And
The new shutter speed Sc and aperture value Ac are set to LUT5.
Add to 4. For example, when a shutter speed of 2000 (reciprocal seconds) and a shutter speed of 4000 (reciprocal seconds) are frequently used, and a shutter speed of 3000 (reciprocal seconds) is calculated as a newly set shutter speed, it is shown in FIG. So on the program line,
A shutter speed setting item of 3000 (inverse seconds) will be added. As a result, a shutter speed of 3000 (inverse seconds) can be newly set in the program mode or the manual mode, and it becomes possible to more meet the photographer's wish.

The curvature may be obtained not only from the two points before and after the center of gravity value Sc but also from the points before and after the center of gravity value Sc, and the aperture value Ac corresponding to the center of gravity value Sc may be obtained according to this curvature.

After adding a new shutter speed to the LUT 54 in this way, in the next step 124,
The release number C and the release number Cs for each shutter speed are reset, and this routine is finished.

As described above, in the present embodiment, it is possible to detect a frequently used shutter speed area and set the center-of-gravity value in this area as a new shutter speed. It becomes possible to meet the shooting conditions.

In the present embodiment, the case has been described in which the center of gravity value in the frequently used shutter speed range is set as a new shutter speed. The combination of the shutter speed and the aperture value corresponding thereto may be deleted from the LUT 54. As a result, the capacity of the lookup table does not increase, and the LUT
The memory capacity of 54 can be minimized.

Further, the same processing as described above may be performed on the aperture value. That is, the barycentric value in the range of frequently used aperture values may be set as a new aperture value.

Further, the lookup table after the change is
You may make it record on a recording medium in the memory card 18 grade. Accordingly, by mounting the memory card 18 on another camera and setting the look-up table, the setting can be easily performed on the other camera according to one's preference.

Further, although the case where the present invention is applied to a digital camera has been described in the present embodiment, the present invention is not limited to this, and the present invention can also be applied to a silver halide camera for recording a photographed image on a photographic film. Needless to say.

[0072]

As described above, according to the present invention, the number of times of photographing is counted for each of a plurality of predetermined photographing conditions, and the main photographing condition range as the tendency of the photographing condition is obtained from the distribution of the count values. Since it is configured to control shooting in a specific shooting condition other than a plurality of predetermined shooting conditions within the obtained main shooting condition range, the shooting condition setting tendency is learned and shooting according to the tendency is performed. It has an excellent effect that conditions can be set.

[Brief description of drawings]

1A is a front view of a digital camera, and FIG. 1B is a rear view of the digital camera.

FIG. 2 is a block diagram showing a configuration of an electric system of the digital camera.

FIG. 3 is a flowchart of a processing routine executed by a control unit.

FIG. 4 is a diagram showing a program line showing a correspondence relationship between an EV value, a shutter speed, and an aperture value.

FIG. 5 is a diagram showing a program line showing a correspondence relationship between an EV value, a shutter speed, and an aperture value.

[Explanation of symbols]

10 digital camera 15 Finder 22 Control unit 24b LCD drive circuit 30 Imaging device 42 memory 46 display

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 2H002 FB03 FB04 FB21 FB22 FB23                       FB24 FB28 GA51 HA11 JA07                       ZA02                 5C022 AA13 AB12 AB15 AB17 AC42                       AC52                 5C052 GA02 GB06 GD05 GE08

Claims (3)

[Claims] 1. A camera capable of shooting under a plurality of predetermined shooting conditions relating to at least brightness, the number of times of shooting when shooting under any one of the plurality of shooting conditions is performed for each of the shooting conditions. Counting means for respectively counting, calculating means for obtaining a distribution of the count values based on the count values, and calculating a main shooting condition range as a tendency of the shooting conditions from the obtained distribution, and within the main shooting condition range And a control unit that determines specific shooting conditions other than the plurality of predetermined shooting conditions and controls shooting so that the specified shooting conditions are set as the shooting conditions. 2. The camera according to claim 1, wherein the shooting condition is at least one of a shutter speed and an aperture value. 3. A look-up table storing a predetermined correspondence between an exposure value determined based on a photometric result of an object and the shooting condition, wherein the control means sets the specific shooting condition to the shooting condition. The camera according to claim 1 or 2, wherein the camera is added to the lookup table as.