JP4347924B2 - Display device in the viewfinder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an in-finder display device that displays an aperture value and the like on a finder in a single-lens reflex camera.
[0002]
[Prior art]
In open photometry with the aperture set to full open, the depth of field of the image observed through the viewfinder is different from the image recorded on the film by photographing. Therefore, in order to confirm the depth of field and the like with a finder before the shutter operation, a camera capable of electronic preview that electronically controls the aperture to the size of the shooting state has been proposed.
[0003]
[Problems to be solved by the invention]
When photometry is performed in the electronic preview, the amount of light received by the photometry sensor is relatively small with respect to the reflected light from the subject image due to the aperture. Therefore, according to the photometry in the electronic preview, an aperture value different from the photometry performed with the aperture set to the fully open state is obtained, and this aperture value is not used in actual photographing. For this reason, in the conventional camera, the aperture value and the shutter speed are not displayed during execution of the electronic preview, and only the subject image is displayed in the finder, so the aperture value and the like cannot be confirmed.
An object of the present invention is to provide an in-finder display device that can check photographing control data such as an F value in the finder even during execution of an electronic preview.
[0004]
[Means for Solving the Problems]
The in-viewfinder display device of the present invention is attached to a camera body and has a photographing lens having an aperture whose electronic opening can be controlled electronically, and a subject image obtained through the photographing lens provided in the camera body. Finder, photometric data detecting means for detecting photometric data through the taking lens, and electronic preview execution for electronically controlling the aperture of the aperture to a predetermined value smaller than the fully open state Shooting control data for displaying the shooting control data related to the exposure of the photo shooting in the finder based on the photometric data detected before the control by the electronic preview execution unit when the aperture is controlled by the means and the electronic preview execution unit And a display means.
[0005]
The shooting control data is, for example, an F value, and may be a shutter speed.
[0006]
The taking lens can be used in a lens auto mode in which the aperture of the aperture is automatically controlled based on photometric data and a lens manual mode in which the aperture of the aperture is adjusted by rotating the aperture ring. It is preferable.
[0007]
In this case, when the lens auto mode is maintained before and after the activation of the electronic preview execution means, the imaging control data display means displays the imaging control data immediately before the activation of the electronic preview execution means. On the other hand, when the lens manual mode is set before the electronic preview execution unit is activated and the lens auto mode is set when the electronic preview execution unit is executed, the shooting control data display unit performs shooting control corresponding to the minimum aperture. Display data.
[0008]
Further, when the lens manual mode is maintained before and after the activation of the electronic preview execution unit, the shooting control data display unit displays shooting control data corresponding to the aperture value selected by rotating the aperture ring. .
[0009]
When the lens auto mode is set before the electronic preview execution unit is activated and the lens manual mode is set when the electronic preview execution unit is executed, the photographing control data display unit is configured so that the aperture ring is before the electronic preview execution unit is activated. When the aperture is set to the wide open side, shooting control data corresponding to the aperture value selected by the aperture ring is displayed. In addition, when the lens auto mode is set before the electronic preview execution unit is activated and the lens manual mode is set when the electronic preview execution unit is executed, the photographing control data display unit activates the electronic preview execution unit. When it is determined on the narrower side than before, the shooting control data corresponding to the F value before activation of the electronic preview execution means is displayed.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a camera body of a single-lens reflex camera provided with a display device in a finder according to an embodiment of the present invention.
[0011]
A shutter button 11 is provided on the upper surface of the camera body 10, and a main switch 12 is provided on the outer periphery of the shutter button 11. The main switch 12 is rotatable with respect to the shutter button 11, and the on / off state of this camera is switched according to the rotational position. A shutter dial 13 for determining the shutter speed is disposed in the vicinity of the shutter button 11. A finder 14 for observing a subject image obtained through the taking lens is provided at the center of the upper surface of the camera body 10, and an exposure correction dial is provided on the opposite side of the finder 14 from the shutter button 11. 15 is provided. A lens mount 16 for attaching an interchangeable lens (not shown) is provided on the front surface of the camera body 10, and a preview button 17 is provided on the side of the lens mount 16.
[0012]
FIG. 2 is a plan view showing an interchangeable lens (photographing lens) 20 that can be attached to the camera body 10 shown in FIG. The lens barrel 21 contains a diaphragm and a diaphragm transmission mechanism for adjusting the opening of the diaphragm.
[0013]
A diaphragm ring 22 is rotatably provided at the base of the lens barrel 21. On the surface of the aperture ring 22, numbers such as “4.5, 8, 11” and a letter “A” are formed. The numbers such as “4.5, 8, 11” indicate the F value, and by adjusting these numbers to the mark 23 formed on the surface of the lens barrel 21, the aperture of the aperture (not shown) is manually adjusted. (Lens manual mode). When the letter “A” is aligned with the mark 23, the aperture opening is controlled by a system control circuit (not shown) provided in the camera body 10 through the aperture transmission mechanism based on the photometric data. Adjusted electronically (lens auto mode).
[0014]
FIG. 3 is a block diagram showing an electrical configuration in the camera body 10.
The system control circuit 30 includes a microcomputer. The output voltage of the battery 31 as a power source is adjusted to a predetermined value by the DC / DC converter 32 and controlled to a stable voltage value by the voltage regulator 33. The output voltage of the battery 31 is applied to the battery check circuit 34, and it is checked whether or not it is a normal value. The oscillator 35 outputs a clock signal necessary for the system control circuit 30 to operate.
[0015]
The system control circuit 30 is connected to the external flash 37 and the interchangeable lens 20 via the interface circuit 36. That is, the light emission operation of the external flash 37 and the data input unique to the interchangeable lens 20 can be controlled by the system control circuit 30.
[0016]
A mirror motor 41 for controlling the tilt angle of a quick return mirror (not shown) is connected to the system control circuit 30 via a motor driver circuit 42. A film motor 43 that winds and rewinds the film is connected to the system control circuit 30 via a motor driver circuit 44. An AF motor 45 that drives a focusing lens provided in the interchangeable lens 20 to perform an automatic focusing (AF) operation is connected to the system control circuit 30 via a motor driver circuit 46.
[0017]
An AF photo interrupter 47, an AF CCD 48, a shutter control circuit 49, and an aperture control circuit 50 are connected to the system control circuit 30. A lens extension amount of the interchangeable lens 20 is detected by the AF photo interrupter 47. During the AF operation, the defocus amount is detected by the AF CCD 48. The shutter control circuit 49 controls the travel of the front curtain and rear curtain of the shutter. The aperture control circuit 50 controls the aperture of the aperture provided in the interchangeable lens 20 and is activated in a mode (lens auto mode) for electronically controlling the aperture value.
[0018]
The system control circuit 30 is connected to a photometry circuit 51, an aperture value detection circuit 52, a temperature sensor 53, an in-finder display device 54, a light emitting element 55 for illumination, an external display device 56, and an EEPROM 57. The photometric circuit 51 includes a photometric sensor and detects the brightness of the subject. The aperture value detection circuit 52 detects the rotation angle position (AVVR) of the aperture ring 22 (see FIG. 2) provided in the interchangeable lens 20, and thereby the aperture value is detected. The temperature sensor 53 detects the temperature in the vicinity of the photometric sensor or the like in order to correct the influence of the temperature such as the photometric data. The in-finder display device 54 is a liquid crystal display element that displays an aperture value and the like in the finder 14 (see FIG. 1). The illumination light emitting element 55 is provided to illuminate the liquid crystal display element of the in-finder display device 54. The external display device 56 is provided on the outer surface of the camera body 11 and displays the operation mode of the camera and the like. The EEPROM 57 stores various data for controlling the operation of the camera.
[0019]
The system control circuit 30 is connected to the main switch 12, the photometry switch 61, the release switch 62, the preview switch 63, and the shutter speed switch 64, and signals generated by opening and closing these switches are input to the system control circuit 30. The metering switch 61 is turned on by half-pressing the shutter button 11. The release switch 62 is turned on by fully pressing the shutter button 11. The preview switch 63 is turned on by pressing the preview button 17. The shutter speed switch 64 includes four switches that are turned on / off according to the rotational angle position of the shutter dial 13. That is, a 4-bit signal indicating the shutter speed is generated according to the on / off states of the four switches.
[0020]
Further, the system control circuit 30 is provided with a RAM 65 for storing data such as a Bv value obtained by photometry.
[0021]
FIG. 4 is a flowchart of a main routine for controlling the operation of the camera. The main routine is executed in the system control circuit 30 and is activated when one of the switches related to photometry, that is, one of the photometry switch 61, the release switch 62, and the preview switch 63 is turned on.
[0022]
In step 101, the power hold timer PT is set to “80”. The power hold timer PT is a timer for starting the main routine for a predetermined time even when the release switch 62 or the like is switched to the OFF state. In step 102, a 125 ms interval timer is started. In step 103, the state of each switch is read. In step 104, it is determined whether or not the main switch 12 is in an off state. When the main switch 12 is off, the main routine ends. On the other hand, when the main switch 12 is in the ON state, step 105 and subsequent steps are executed.
[0023]
In step 105, a switch operation process is performed and converted into a value actually used in calculation or control based on the switch state input in step 103. In step 106, lens communication is performed, and information specific to the interchangeable lens 20, information indicating whether the aperture ring 22 is positioned in the lens auto mode or the lens manual mode, and the like are input from the interchangeable lens 20.
[0024]
In step 107, photometry is performed, and a Bv value as photometry data is detected and A / D converted. In step 108, the Bv value is stored in the RAM 65 in the system control circuit 30. In step 109, the rotation angle position (AVVR) of the aperture ring 22 is detected and A / D converted to obtain the aperture value. In step 110, the temperature is detected by the temperature sensor 53 and A / D converted.
[0025]
In step 111, photometric calculation is performed based on the data obtained in steps 105, 106, 107, 109, and 110, and the F value and shutter speed are obtained. In step 112, display processing is performed, and the display device in the finder 14 displays the F value, that is, shooting control data relating to the exposure of the shooting.
[0026]
In step 113, it is determined whether or not the release switch 62 is on. When the release switch 62 is on, step 114 is executed to perform the release process. That is, shooting is performed and the subject image is recorded on the film, and the main routine ends.
[0027]
When it is determined in step 113 that the release switch 62 is in the off state, step 115 is executed to determine whether or not the preview switch 63 is in the on state. When the preview switch 63 is on, step 116 is executed to perform an electronic preview, and the main routine ends. The electronic preview is a process of observing the subject image from the viewfinder while changing the aperture of the aperture to the aperture value determined based on open metering (that is, a predetermined value smaller than the fully open state). Will be described later.
[0028]
When it is determined in step 115 that the preview switch 63 is in the OFF state, step 117 is executed, and it is determined whether or not 125 ms has elapsed since the timer start in step 102. When 125 ms has elapsed, the routine proceeds to step 118 where the power hold timer PT is decremented by one. In step 119, it is determined whether or not the power hold timer PT is zero. When the power hold timer PT is not 0, the process returns to step 103 and the above-described processing is repeated. On the other hand, when it is determined in step 119 that the power hold timer PT is 0, the main routine ends. That is, even if the release switch 62 and the preview switch 63 are set to the OFF state, the main routine operates for 10 seconds (= 125 ms × 80), and the main routine ends when 10 seconds elapse.
[0029]
FIG. 5 is a flowchart of the electronic preview processing routine executed in step 116 of FIG. This routine is executed while the preview switch 63 is on.
[0030]
In step 201, the preview on flag is set to 1. In step 202, a preview is improved, and the aperture is narrowed down to a size corresponding to the F value obtained in step 111 of FIG. In step 203, as will be described later, a preview up holding process is performed, and the aperture size is changed according to the result of the photometric calculation executed in step 111. Next, in step 204, preview down is performed and the aperture is opened to the fully open state. After the preview on flag is cleared to 0 in step 205, this routine ends.
[0031]
FIG. 6 is a flowchart of the preview up holding processing routine executed in step 203 of FIG.
[0032]
In step 301, the preview up holding flag is set to 1. The preview-up holding flag is held at 1 while the processing of steps 303, 304, 311 to 317 is being executed, and is cleared to 0 when the processing is completed. In step 302, a 125 ms interval timer is started. In step 303, signals indicating the states of all switches including the preview switch 63 are input.
[0033]
In step 304, it is confirmed whether or not the preview switch 63 is set to the on state. When the preview switch 63 is in the OFF state, the preview up holding flag is cleared to 0 in step 305, the first preview flag is cleared to 0 in step 306, and this routine ends. As will be described later, the preview first flag is set to 1 in step 402 in FIG. 8 when the preview switch 63 is turned on.
[0034]
When it is confirmed in step 304 that the preview switch 63 is set to the on state, step 311 is executed and switch operation processing is performed. That is, the states of all the switches are read and converted into values used in calculation or control. In step 312, lens communication is performed, and various information regarding the interchangeable lens 20 is input as in step 106 of FIG. 4. In step 313, the rotation angle position (AVVR) of the aperture ring 22 is detected and A / D converted, and the aperture value is obtained and stored in the RAM 65 of the system control circuit 30. In step 314, the temperature is detected by the temperature sensor 53, A / D converted, and input to the RAM 65.
[0035]
In step 315, photometric calculation is performed. This photometric calculation is different from the photometric calculation in step 111 of FIG. 4, the Bv value stored in the RAM 65, the aperture value obtained in step 313 or in the F value set processing routine (see FIG. 9), and the step Based on the temperature data obtained in 314, the F value and the shutter speed are obtained.
[0036]
In step 316, display processing is performed, and the F value (imaging control data) is displayed beside the subject image by the display device in the finder 14. In step 317, it is determined whether or not 125 ms has elapsed since the timer was started in step 302. When 125 ms elapses, the process proceeds from step 317 to step 303, and the above-described processing is executed again.
[0037]
If it is determined in step 304 that the preview switch 63 is switched to the OFF state during the execution of the loop consisting of steps 303, 304, 311 to 317, steps 305 and 306 are executed, and this routine ends.
[0038]
FIG. 7 shows an example of the contents displayed in the finder 14 in step 316 of FIG. As shown in this figure, similarly to the normal viewfinder display that does not use the electronic preview, the viewfinder display when the electronic preview is performed is formed outside the image area R1 where the subject image is displayed and the image area R1. And a shooting control data display area R2 on which shooting control data relating to the exposure of the shooting is displayed. In the example of FIG. 7, the F value “11” is shown in the imaging control data display area R2. A circular area R3 shown at the center of the image area R1 is a distance measuring zone.
[0039]
FIG. 8 is a flowchart of the first preview processing routine executed in step 311 of FIG.
[0040]
In step 401, it is determined whether or not the first preview flag is 1. The first preview flag is set to 1 in step 402 when the preview switch 63 is switched on and the first preview processing routine is executed for the first time, and while the preview switch 63 is in the off state, In step 306, it is set to zero. Accordingly, immediately after the preview switch 63 is switched to the ON state, it is determined in step 401 that the first preview flag is 0, and step 402 is executed to switch the first preview flag to 1.
[0041]
In step 403, data indicating the exposure mode immediately before the electronic preview is executed, that is, immediately before the preview switch 63 is turned on, is stored in the RAM 65 of the system control circuit 30. Examples of the exposure mode include a program mode, an aperture priority mode, a shutter speed priority mode, and a manual exposure mode. In Step 404, based on the result of the photometry calculation executed in Step 111 of FIG. 4, the exposure mode stored in Step 403, and the open aperture of the interchangeable lens 20, the F value immediately before the electronic preview is executed. Is stored in the temporary storage area of the RAM 65, and this routine ends.
[0042]
When it is determined in step 401 that the first preview flag is 1, since steps 403 and 404 have already been executed and the F value has been obtained, this routine is immediately terminated.
[0043]
FIG. 9 is a flowchart of an F value setting process routine executed as part of the process of step 315 in FIG.
[0044]
In step 501, the aperture value immediately before the electronic preview is executed, that is, the F value stored in the temporary storage area of the RAM 65 in step 404 of FIG. 8 is read and stored in a predetermined work area of the RAM 65. In step 502, it is determined whether or not the aperture ring 22 is currently set at the position "A", that is, whether or not the lens auto mode is selected. When the lens auto mode is selected, step 503 is executed, the exposure mode data stored in the RAM 65 is read, and whether or not the exposure mode immediately before the electronic preview is executed is the lens auto mode. Is determined.
[0045]
When the exposure mode immediately before the electronic preview is activated is the lens auto mode, that is, when the lens auto mode is maintained before and after the electronic preview is activated, this routine ends without executing step 504. Therefore, after that, in step 316 of FIG. 6, the F value stored in step 501 is displayed by the display device in the finder 14. That is, the F value immediately before the electronic preview is executed is displayed beside the subject image in the viewfinder.
[0046]
In step 503, when it is determined that the exposure mode immediately before the electronic preview is executed is the lens manual mode, that is, when the lens manual mode is switched to the lens auto mode before and after the execution of the electronic preview is started, step 504 is executed. Is executed. That is, the F value corresponding to the minimum aperture value is stored in the work area of the RAM 65, and this routine ends. Therefore, thereafter, in step 316 of FIG. 6, the F value corresponding to the minimum aperture value is displayed.
[0047]
Thus, when the lens manual mode is switched to the lens auto mode, the letter “A” on the aperture ring 22 is beyond the position of the minimum aperture (“32” in the example of FIG. 2). On the other hand, in the lens manual mode, a mechanical stopper acts so that the diaphragm blades are not displaced toward the aperture side from the position corresponding to the set F value. In this state, when the lens auto mode is set, The stopper is set at the position of the minimum aperture. Therefore, when the lens manual mode is switched to the lens auto mode, only the minimum aperture value can be set as the aperture value, and only the F value corresponding to the minimum aperture value is set in the electronic preview.
[0048]
On the other hand, when it is determined in step 502 that the aperture ring 22 is not currently set at the position “A” and the lens manual mode is selected, step 505 is executed. In step 505, similarly to step 503, it is determined whether or not the exposure mode immediately before the electronic preview is executed is the lens auto mode.
[0049]
When the exposure mode immediately before the electronic preview is activated is the lens manual mode, that is, when the lens manual mode is maintained before and after the electronic preview is activated, step 507 is executed. That is, the current F value is stored in the work area of the RAM 65, and this routine ends. When the lens manual mode is maintained in this way, in step 316 of FIG. 6, the F value corresponding to the aperture value selected by the aperture ring 22 at that time is displayed.
[0050]
When it is determined in step 505 that the exposure mode immediately before the electronic preview is executed is the lens auto mode, step 506 is executed, and the position of the currently selected aperture ring 22 is set to F immediately before the electronic preview is executed. It is determined whether or not it is on the open side with respect to the value. When the current position of the aperture ring 22 is the open side, step 507 is executed. That is, in step 316 of FIG. 6, the F value corresponding to the aperture value selected by the aperture ring 22 at that time is displayed. On the other hand, when the current position of the aperture ring 22 is on the aperture side, step 507 is skipped, and this routine ends. That is, in step 316 of FIG. 6, the F value immediately before the electronic preview is activated is displayed.
[0051]
In the lens auto mode, the diaphragm is controlled at a position corresponding to the F value at that time, and a mechanical stopper acts to prevent the diaphragm blades from being narrowed down. Therefore, when the lens auto mode is switched to the lens manual mode, when the position of the aperture currently selected by the aperture ring 22 is closer to the aperture than the F value immediately before the start of the electronic preview, in step 316 in FIG. In step 501, the F value stored in the RAM 65 is displayed.
[0052]
If it is determined in step 506 that the position of the currently selected aperture ring 22 is closer to the open side than the F value immediately before the electronic preview is executed, step 507 is executed. Therefore, in step 316 of FIG. 6, the F value corresponding to the aperture value currently selected by the aperture ring 22 is displayed.
[0053]
As described above, according to the present embodiment, even when the aperture ring and the exposure mode are changed during execution of the electronic preview, the actual F value matches the F value of the display. In addition, the depth of field and F value of the subject image can be confirmed at the same time.
[0054]
In the present embodiment, only the F value is displayed as the shooting control data, but the shutter speed can also be displayed.
[0055]
【The invention's effect】
As described above, according to the present invention, shooting control data such as an F value can be confirmed in the finder even during execution of an electronic preview.
[Brief description of the drawings]
FIG. 1 is a front view of a camera body of a single-lens reflex camera including an in-finder display device according to an embodiment of the present invention.
FIG. 2 is a plan view showing an interchangeable lens that can be attached to the camera body shown in FIG.
FIG. 3 is a block diagram showing an electrical configuration in the camera body.
FIG. 4 is a flowchart of a main routine for controlling the operation of the camera.
FIG. 5 is a flowchart of an electronic preview processing routine.
FIG. 6 is a flowchart of a preview up holding processing routine.
FIG. 7 is a diagram illustrating an example of contents displayed in a finder.
FIG. 8 is a flowchart of a first preview processing routine.
FIG. 9 is a flowchart of an F value set processing routine.
[Explanation of symbols]
10 Camera body
14 Finder
17 Preview button
20 Shooting lens
22 Aperture ring
63 Preview switch

Claims (5)

A photographic lens having a diaphragm attached to the camera body and whose opening is electronically controllable;
A viewfinder provided in the camera body for observing a subject image obtained through the photographing lens;
Photometric data detection means for performing photometry through the photographing lens and detecting photometric data;
Electronic preview execution means for electronically controlling the aperture of the aperture and changing it to a predetermined value smaller than the fully open state;
When the aperture is controlled by the electronic preview execution means, shooting that displays in the viewfinder shooting control data relating to exposure of photography based on the photometric data detected before the control by the electronic preview execution means Control data display means,
The photographing lens includes a lens auto mode in which the aperture of the aperture is automatically controlled based on the photometric data, and a lens manual mode in which the aperture of the aperture is adjusted by rotating the aperture ring. Is available,
When the lens auto mode is set when the electronic preview execution unit is executed and the lens auto mode is set even before the electronic preview execution unit is activated, the imaging control data display unit performs the electronic preview execution. When shooting control data immediately before the start of the means is displayed , the lens auto mode is set when the electronic preview execution means is executed, and the lens manual mode is set before the electronic preview execution means is started, The in-finder display device, wherein the photographing control data display means displays photographing control data corresponding to a minimum aperture .   The in-finder display device according to claim 1, wherein the photographing control data is an F value.   The in-finder display device according to claim 1, wherein the photographing control data is a shutter speed. A photographic lens having a diaphragm attached to the camera body and whose opening is electronically controllable;
A viewfinder provided in the camera body for observing a subject image obtained through the photographing lens;
Photometric data detection means for performing photometry through the photographing lens and detecting photometric data;
Electronic preview execution means for electronically controlling the aperture of the aperture and changing it to a predetermined value smaller than the fully open state;
When the aperture is controlled by the electronic preview execution means, shooting that displays in the viewfinder shooting control data relating to exposure of photography based on the photometric data detected before the control by the electronic preview execution means Control data display means,
The photographing lens includes a lens auto mode in which the aperture of the aperture is automatically controlled based on the photometric data, and a lens manual mode in which the aperture of the aperture is adjusted by rotating the aperture ring. Is available,
When the lens manual mode is set when the electronic preview execution means is executed and the lens manual mode is set even before the electronic preview execution means is started, the imaging control data display means Display the shooting control data corresponding to the aperture value selected by turning ,
When the lens manual mode is set when the electronic preview execution unit is executed and the lens auto mode is set before the electronic preview execution unit is activated, the photographing control data display unit is configured such that the aperture ring is When the aperture is set to the wide open side before the electronic preview execution unit is activated, the shooting control data corresponding to the aperture value selected by the aperture ring is displayed, and the aperture ring activates the electronic preview execution unit. An in-finder display device that displays photographing control data corresponding to an F value before activation of the electronic preview execution means when it is determined to be narrower than before . A photographic lens having a diaphragm attached to the camera body and whose opening is electronically controllable;
A viewfinder provided in the camera body for observing a subject image obtained through the photographing lens;
Photometric data detection means for performing photometry through the photographing lens and detecting photometric data;
Electronic preview execution means for electronically controlling the aperture of the aperture and changing it to a predetermined value smaller than the fully open state;
When the aperture is controlled by the electronic preview execution means, shooting that displays in the viewfinder shooting control data relating to exposure of photography based on the photometric data detected before the control by the electronic preview execution means Control data display means,
The photographing lens includes a lens auto mode in which the aperture of the aperture is automatically controlled based on the photometric data, and a lens manual mode in which the aperture of the aperture is adjusted by rotating the aperture ring. Is available,
When the lens manual mode is set when the electronic preview execution unit is executed and the lens auto mode is set before the electronic preview execution unit is activated, the photographing control data display unit is configured such that the aperture ring is When the aperture is set to the open side more than before the electronic preview execution unit is activated, shooting control data corresponding to the aperture value selected by the aperture ring is displayed, and the aperture ring activates the electronic preview execution unit. An in-finder display device that displays photographing control data corresponding to an F value before activation of the electronic preview execution means when it is determined to be narrower than before .

Images