JP2761769B2 - Camera strobe control - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strobe control device for a camera having a built-in strobe, and more particularly, to a malfunction of a camera having a built-in strobe whose light-emitting unit is driven to a storage position and a light-emitting position. The present invention relates to a control device for preventing the above.

“Prior art and its problems” In recent years, in consideration of ease of use, cameras with a built-in automatic light control strobe are increasing. In some cameras with built-in flash, the flash unit is moved to the storage position in the camera body and the flash position protruding from the camera body by the retractable mechanism or pop-up mechanism. In some cases, the light-emitting unit is freely supported, and the light-emitting unit is moved between a light-emitting position and a storage position through the support mechanism by an electric member (motor).

Such a conventional strobe control device generally controls strobe light emission based on an exposure factor, for example, luminance information of a photometric subject, calculated shutter speed information, and the like. That is, if the brightness of the subject is lower than a certain value at the time of shooting, the light emitting unit is moved to the light emitting position to emit light,
Then return to the storage position. On the other hand, if the brightness of the subject is higher than a certain value, there is no need to emit a strobe, so that the flash is not emitted while the light emitting unit is held at the storage position.

In a camera provided with such a strobe control device, the light emitting unit may not be able to move to the light emitting position for some reason. For example, when the light emitting unit is pressed by the photographer's hand, or when an external flash having a special shape is attached and the light emitting unit hits the external flash. As described above, even if the strobe light is emitted in a state where the light emitting unit is not at the light emitting position, a normal photograph cannot be taken.

However, conventional cameras have not taken sufficient measures against such a situation. For example, if light is emitted even when the light emitting unit is not at the light emitting position, a normal photograph cannot be taken due to insufficient exposure or uneven brightness. In addition, if the release is prohibited when the light emitting portion is not at the light emitting position, a long shutter chance will be missed.

"Object of the Invention" The present invention has been made to solve such a problem of a conventional camera having a built-in strobe. Even if the light-emitting portion of the built-in strobe cannot be moved to a normal position, a normal photograph can be taken. An object of the present invention is to provide a strobe control device capable of photographing.

SUMMARY OF THE INVENTION To achieve this object, the present invention provides a light-emitting portion of a built-in strobe supported by a camera body by a support mechanism and moved to a storage position and a light-emitting position; In a camera having a drive mechanism for moving the flash unit to a position, a detecting unit for detecting that the light emitting unit is at a light emitting position, and when the built-in strobe is made to emit light,
Activating the drive mechanism to move the light-emitting unit to the light-emitting position, move the light-emitting unit to the storage position after the end of light-emission, and furthermore, Control means for prohibiting light emission of the built-in strobe.

With this configuration, when the flash unit emits light, if the light-emitting unit cannot move to the light-emitting position for any reason, the built-in flash is prohibited and shooting is performed with an appropriate exposure value.
Eliminating photographing errors due to abnormal flash emission and loss of shutter chances due to inability to release the shutter are eliminated.

Furthermore, an external flash is formed so that it can be mounted. When the specified flash is mounted, the built-in flash and the external flash are fired when the flash is fired, and when the built-in flash cannot be moved to the flash position, the external flash is mounted. Control means for emitting only light may be provided.

According to this configuration, when the flash unit emits light, if the light emitting unit cannot move to the light emitting position for some reason, the built-in flash is prohibited and only the external flash is fired to shoot with an appropriate exposure value. Eliminating photographing errors due to abnormal flash emission and loss of shutter chances due to inability to release the shutter are eliminated.

"Embodiments of the Invention" The present invention will be described below based on embodiments shown in the accompanying drawings. FIG. 1 is a schematic configuration diagram of a power retractable strobe to which the present invention is applied. FIG. 2 is a diagram showing a single-lens reflex camera equipped with a strobe control device of a camera of the present invention, in which a light-emitting unit is moved to a light-emitting position. FIG. 3 is a front view showing a state in which an external strobe is mounted, and FIG. 3 is a schematic configuration diagram of a circuit of the strobe control device of the present embodiment.

On the upper part of the camera body 10 (the upper part of the pentaprism 11), the light emitting part 12 of the built-in strobe is stored by the support mechanism in the storage part 10a in the camera body 10 (the position shown by the imaginary line); It is movably supported at a light emitting position (a position shown by a solid line) protruding from the storage section 10a. In the figure, only the lever 13 constituting the support mechanism is shown.

The lever 13 has one end pivotally supported by the rear end of the light-emitting unit 12 via a shaft 13a, and the other end pivotally supported by a side wall of a housing 10a formed in the camera body 10 via a shaft 13b. One of the levers 13 is formed with a sector gear 14 centered on a shaft 13b. A pinion 17 of a strobe motor 16 as a drive mechanism meshes with the sector gear 14 via a gear train 15.
Therefore, the rotation of the strobe motor 16 is changed to the gears 17, 15, 14
The rotation is transmitted to the lever 13 via the lever 16 and the lever 13 rotates according to the rotation direction of the motor 16. And the strobe light emitting unit 12
Move to the storage position and the light emitting position.

Two limit switches 18 and 19 are provided between the lever 13 and the camera body 10, and are turned on (or off) when the light emitting unit 12 reaches the storage position and the light emitting position, respectively. The operation of the strobe motor 16 is controlled by the camera control circuit 20, and its stop control is performed by detecting ON / OFF of these limit switches 18, 19. The position detecting means of the light emitting unit is not limited to these limit switches 18 and 19. For example, a combination of a brush and a code plate with which the brush slides may be used.

A pin 14a is implanted in the sector gear 14, and this pin 14a
An arc-shaped groove 1 formed on the camera body 10 and centered on an axis 13b.
It fits in 0b. The rotation angle of the sector gear 14 (lever 13) is restricted by the pins 14a and the arc-shaped grooves 10b. That is, the rotation limit positions of the lever 13 are the light emitting position and the storage position of the light emitting unit 12, respectively.

Further, in this embodiment, an overload detection circuit for the strobe motor 16 is provided, and when the movement of the light emitting unit 12 is blocked by an external force or the like, the overload detection circuit detects this and stops the strobe motor 16. This overload detection circuit is included in the camera control circuit 20 in this embodiment. Further, when the normal strobe motor 16 is stopped, the pin 14a is
A configuration in which the overload detecting means detects that the lever 13 cannot rotate from the light emitting position or the storage position earlier by contacting the end of the lever 0b (the strobe motor 16 cannot rotate). Good.

Next, a circuit configuration of the flash control device of the present embodiment will be described. The camera control circuit 20 shown in FIG.
A control circuit that constitutes a strobe control device and controls all operations of the camera as a whole, and is usually made up of a microcomputer.

The camera control circuit 20 is connected to a photometric circuit 22 that logarithmically compresses the output of the photometric sensor 21 that receives the subject light and processes the output into a predetermined photometric signal. The camera control circuit 20
An exposure factor (shutter speed, aperture value, camera shake limit shutter speed, etc.) is calculated by a predetermined algorithm based on a photometric signal from the photometric circuit 22 and information such as film sensitivity information.

Further, the camera control circuit 20 reads the lens information from a lens ROM 23 (or CPU) provided in the mounted photographing lens by serial communication. The type of lens attached, focal length,
Know the minimum aperture value, open aperture value, etc. Here, the camera control circuit 20 functions as a lens information input unit. Note that the serial communication is performed through connection of a plurality of contacts provided on the mount unit 24.

Further, the camera controller 20 is connected to respective contacts of a hot shoe 26 to which an external flash 25 is mounted. In the case of a predetermined strobe having a communication function of the external flash 25 attached to the hot shoe 26, the camera control circuit 20 sends the external flash 25 via the hot shoe 26.
Enter strobe information from. As strobe information,
The type of strobe (whether or not the built-in strobe light emitting unit 12 is prevented from being raised), a guide number, whether charging has been completed, and the like. On the other hand, a light emission permission signal, a trigger signal, a quench signal, and the like are sent from the camera control circuit 20 to the external strobe 25.

The distance measurement unit 27 includes a distance measurement sensor that converts a subject image formed by a photographing lens into a predetermined electric signal, and outputs a distance measurement signal necessary for measuring a subject distance (defocus amount) from the distance measurement sensor. Output. The camera control circuit 20 calculates an amount of defocus based on the distance measurement signal and the lens information, and performs an AF process for driving the focusing lens of the photographing lens to an in-focus position via the AF mechanism.

The LCD panel 29 is provided on the outer surface of the camera body 10 and in the viewfinder field, and is driven by the camera control circuit via the display circuit 28. LCD panel 29 of the present embodiment
Indicates at least whether or not the flash can be emitted. Of course, in addition to this, various displays relating to the photographing function of the camera, such as an exposure program mode, a shutter speed, an aperture value, and in-focus / out-of-focus, can also be performed.

The camera control circuit 20 includes, as switches, a photometric switch SWS as a first switch, a release switch SWR as a second switch, a self-switch SW1, a light-emission changeover switch SW2, a lens improper release switch SW3, and an up detection switch SW4. Is connected.

The photometry switch SWS and the release switch SWR are switches that are linked with the release button 31. The photometry switch SWS is turned on when the release button 31 is half-pressed, and the release switch SWR is turned on when the release button 31 is fully pressed. When the photometric switch SWS is turned on, the photometric circuit 22, the distance measuring unit 27, and the like start operating, and when the release switch SWR is turned on, the operation shifts to a release operation.

The self-switch SW1 is a switch for operating a self-timer. When the self-switch SW1 is turned on, a self-timer mode is entered. When the release switch SWR is turned on in the self-timer mode, a self-operation is started, and a release operation is performed after a lapse of a predetermined time.

The light emission switch SW2 is a switch for switching the light emission mode of the strobe. When the light-emission changeover switch SW2 is not turned on, it controls whether or not to fire the strobe based on the luminance of the subject measured via the photometry circuit 22 and the lens information read from the lens ROM 23 (automatic light emission mode). If so, the strobe is forcibly controlled to emit light (forcible light emission mode). If the calculated shutter speed is faster than the flash tuning speed at the time of forced flash emission, the camera control circuit 20 sets the shutter speed at the time of release to the flash tuning speed.

The lens improper release switch SW3 is a switch for switching whether or not the lens information read from the lens ROM 23 is used for determining the strobe light emission. The lens inappropriateness release switch SW3 is operated, for example, when it is necessary to forcibly emit light from the strobe, even though it is known that the angle of view of the attached lens is wider than the irradiation angle of the strobe.

The up detection switch SW4 is a switch that is turned on when the light emitting unit 12 of the strobe light shown in FIG. 1 is completely up (when the light emitting position is reached).
Note that the same switch can be used as the up detection switch SW4 and the limit switch 19.

In addition, the camera control circuit 20 includes a strobe (arc tube 36)
A strobe circuit 35 for emitting light is connected to an auxiliary light emitting LED 37 provided adjacent to a light emitting tube 36. The camera control circuit 20 outputs a light emission permission signal, a trigger signal, and a quench signal to each of the strobe circuit 35 and the hot shoe 26. Here, the camera control circuit 20 functions as a flash control unit.

The above-mentioned light emission permission signal is a signal for permitting light emission when the conditions under which the strobe light can be emitted are established, and the internal and external strobes receiving this signal start preparing for light emission such as charging. The trigger signal is a signal for causing the strobe to emit light, and the quench signal is a signal for stopping the light emission when the amount of light emitted by the strobe reaches an appropriate amount. The auxiliary light emitting LED 37 assists the distance measurement by the distance measurement circuit 27 by irradiating a contrast pattern to the object when the object has low luminance or low contrast.

The camera control circuit 20 further includes a release switch SWR
Release magnet 39 that releases the mechanical charge of the mirror and shutter curtain (front curtain and rear curtain) when is turned on
A front curtain magnet 40 that locks the front curtain and the rear curtain in place of the mechanical lock, and sequentially releases the locking to move the front curtain and the rear curtain so as to obtain a predetermined shutter speed. And the rear curtain magnet 41 are connected.

The X contact switch SWX in the figure is a switch for emitting an external flash having a low function (having no communication function), and is turned on after the front curtain has been driven, thereby turning on the external flash via the hot shoe 26. Flash.

The strobe control device for a camera according to the present invention thus configured operates as follows based on the operation flowcharts shown in FIGS. 4 and 5. Here, before describing this flowchart, the schematic operation of the above-described apparatus will be described.

In the strobe control device for a camera according to the present invention, the calculated shutter speed is lower than a certain value (for example, the shutter speed is lower than the camera shake limit shutter speed, so an auxiliary light by the strobe is required), and the photographing lens attached to the camera. The light emitting unit 12 emits light when the two conditions are met, that is, when the light emitting unit 12 is compatible with the built-in flash, and the light emitting unit 12 goes down after the light emission ends.

In the forced light emission mode, if the calculated shutter speed is faster than the flash tuning speed, the shutter speed at the time of release is set to the flash tuning speed.

Here, if the light-emitting unit 12 does not rise to the light-emitting position when using the built-in flash, the built-in flash is stopped, and a predetermined external flash 25 is attached without the built-in flash being fired. At times, the light is emitted, and when not attached, the light is not emitted, and the exposure is performed at a shutter speed and an aperture value that provide an appropriate exposure value.

There are four types of light emission modes of the strobe in this embodiment.
The first is emission of both internal and external strobes, the second is emission of only external flashes, the third is emission of only built-in flashes, and the fourth is emission inhibition of both strobes.

Incidentally, what is needed is strobe light emission is camera shake limit normal shutter speed is because when slower than shake limit shutter speed T _v, and the shutter speed T _v calculated, based on the focal length information of the lens It is preferable to determine whether or not to use a strobe based on the shutter speed.

The outline of the operation is as described above, but the operation of the present embodiment will be described in detail below with reference to the flowcharts shown in FIGS. This operation is performed by the camera control circuit.
It is executed based on the program written in the memory by 20 microcomputers.

First, when a program starts under a predetermined condition such as turning on a main switch, the camera control circuit 20 inputs switch information (whether it is ON or OFF) of each of the switches SWS, SWR and SW1 (step S1). Then, it waits for the photometric switch SWS to be turned on (S3).

When the metering switch SWS is turned on, the light emission switch SW2
Switch information, and if the switch is on, the flash mode is set to the forced flash mode. If the switch information is off, the flash mode is set to the automatic flash mode (S5 to S1).
1). When the strobe light emission mode is set to the forced light emission mode, the shutter speed at the time of release is set to a speed synchronized with the light emission of the strobe light, and the strobe light is emitted at the time of release. On the other hand, when the automatic flash mode is set, the strobe is fired only when it is determined that the flash should be fired by the control described later.

Next, the camera control circuit 20 reads the lens information stored in the lens ROM 23, and exchanges information with the external flash 25 via the hot shoe 26 (S13, S15). The lens information stored in the lens ROM 23 is information such as a lens type and a focal length. Information from the external strobe 25 includes characteristics of the external strobe 25, for example, whether or not movement of the light-emitting unit 12 to the light-emitting position when attached to the camera body 10 is prevented, or a guide number. When an external strobe having no communication function is mounted, it is detected that the external strobe is mounted based on the level of an electric contact having a hot shoe.

Then, the camera control circuit 20 calculates an exposure factor such as a shutter speed based on the photometric signal output from the photometric circuit 22, the film sensitivity information and the like (S17, S19).

Next, the camera control device 20 causes the LCD panel 29 to display various set values set in the camera via the display circuit 28 (S21). The display contents include the flash mode of the strobe, the suitability of the attached lens, the suitability of the external strobe, and the like.

Then, the camera control circuit 20 checks whether or not the self-switch SW1 is turned on (whether or not the self-timer mode is set). If the self-switch mode is not set, the process jumps to step S33. The process proceeds to (S23). In step S24, it is checked whether or not the self-operation is being performed. If not, it is checked whether or not the release switch SWR is turned on (S25). If it is on, the self-counter is started, that is, the self-operation is started. Start (S26). Then, the fact that the self-timer mode is being operated is indicated by blinking of the external LED 32 (see FIG. 3), and the self-counter is decremented (S27, S2).
9). If the self-operation has already started in step S24, the process jumps to step S27 to continue the self-operation. If the release switch SWR is not turned on even in the self-timer mode, the process returns from step S25 to step S1.

Then, it is checked whether or not the self-counter has become 0. If it is not 0, the process returns to step S1 to repeat the above-mentioned process, and if it becomes 0, the process proceeds to step S33 (S3
1).

On the other hand, if the mode is not the self-timer mode, that is, if the mode is the normal shooting mode, the process proceeds from step S23 to step S32, where it is checked whether the release switch SWR is on. If the release switch SWR is not turned on, the process returns to step S1 and returns to steps S1 to S4.
Repeat the processing of S23 and S32, release switch SWR
Is turned on, the process proceeds to step S33.

In step S33, it is checked whether or not the calculated shutter speed is lower than a predetermined speed (for example, a camera shake limit shutter speed). If the calculated shutter speed is not low, there is no need for auxiliary light emission and strobe light emission. )
Fly to processing.

On the other hand, if the calculated shutter speed is low, it is checked whether an external strobe is attached (S3).
Five). Step S if no external strobe is attached
Proceeding to step 39, if it is attached, proceed to step S37 to check whether the characteristics of the external strobe are compatible. If it is, return to step S39; otherwise, skip to step S45. Here, the adaptation of the external flash means that it does not prevent the light emitting unit 12 from being raised to the light emitting position.

In step S39, a light emitting unit up process of moving the light emitting unit 12 to the light emitting position is performed, and the up detecting switch SW4
Is turned on (when the light-emitting part 12 is raised to the light-emitting position), the auxiliary light-emitting LED 37 is turned on, and then the AF processing in step S45 is performed. If the up detection switch SW4 is not turned on, the light is emitted and the AF processing is performed. Go on (S41, S43).

In step S45, the distance to the subject is measured via the distance measurement unit 27, and the focusing lens (not shown) of the photographing lens is moved to the focus position by the AF mechanism based on the distance measurement value (defocus amount). Perform AF processing. If the subject is in focus by the AF process, the process proceeds to the next step S49. If the subject is not focused, the process returns to step S1 and repeats the above process until the subject is focused (S47).

In the self-timer mode, the processes in steps S1 to S23, S24, S31, S33 to S47, and S1 are repeated until the self-counter becomes 0 and focus is achieved. On the other hand, in the normal photographing mode, the processes of S1 to S23, S32 to S47, and S1 are repeated from the time when the release switch SWR is turned on to the time when focusing is performed. Note that the above is the case of focusing priority, but in the case of release priority, the process proceeds from step S47 to step S49 regardless of whether or not focusing has been achieved.

In step S49, it is checked whether the flash mode is set to the forced flash mode. If the flash mode is the forced flash mode, the built-in flash is fired regardless of the taking lens and the external flash.
The process jumps to S61, and if not in the forced light emission mode, the process proceeds to step S51.

In step S51, it is checked whether the calculated shutter speed is lower than a predetermined speed. If the speed is not low, the strobe is not fired, so the flow jumps to step S77 to inhibit the strobe light emission, set the shutter speed at the time of release to the calculated shutter speed, and then perform the exposure process of step S69.

If the calculated shutter speed is lower than the predetermined speed, the strobe is fired, so it is first checked whether an external strobe is attached (S53). If an external flash is attached, it is checked whether the external flash is compatible (S54). If the external flash is not compatible, the light emitting unit 12 cannot move to the normal light emitting position. The light emission of the built-in flash is prohibited, and the shutter speed at the time of release is set to the flash synchronization speed, and then the exposure processing in step S69 is performed.

If the external strobe is compatible, it is checked whether the characteristics of the mounted photographic lens match the characteristics of the built-in flash (S55). If not,
Since normal irradiation cannot be performed even when the built-in strobe light is emitted, the process proceeds to step S75 where the built-in strobe light emission is prohibited. On the other hand, if they match, in step S56,
Enable the built-in flash and set the shutter speed at release to the flash sync speed, then step
The process proceeds to S63.

If it is determined in step S53 that there is no external flash in the external flash presence check, it is checked whether the attached photographing lens is compatible (S57). If so, the process proceeds to step S61, and if not, it is checked whether the lens improper release switch SW4 is on (S59). If the lens improper release switch SW4 is not turned on, the built-in flash is not fired, so the process proceeds to step S77.If it is turned on, the built-in flash is fired.
Return to S61.

In step S61, light emission of the built-in flash is permitted, and the shutter speed at the time of release is set to the flash synchronization speed. Then, it is checked whether or not the up detection switch SW4 is turned on, that is, whether or not the light emitting unit 12 is at the light emitting position. If not, the strobe motor 26 is activated to raise the light emitting unit 12 to the light emitting position. After that, it is checked again whether the up detection switch SW4 is turned on (S63, S65, S67).

When the up detection switch SW4 is turned on, step S61
The exposure process is performed under the conditions set in (or steps S56, S75, S77) (S69).
If it is up, it is brought down and the process ends (S71).

On the other hand, in the up processing of the light emitting unit 12 (S65), if the light emitting unit 12 does not rise to the light emitting position for some reason and the up detection switch SW4 is not turned on, the process proceeds from step S67 to step S73.

In step S73, the presence or absence of an external flash is checked.
In step S77, the emission of the internal and external strobes is prohibited, the shutter speed at the time of release is set to the calculated shutter speed, and the exposure process is performed without emitting the internal and external strobes (S6).
9). On the other hand, if an external flash is attached, the built-in flash is prohibited in step S75, the shutter speed at the time of release is set to the flash tuning speed, and then the external flash is fired to perform exposure processing ( S69).

When the exposure process is completed, if the light emitting unit 12 has been raised to the light emitting position, the light emitting unit 12 is lowered to the storage position and the process ends (S71).

FIG. 5 shows a display subroutine. Light emitting unit
When it is determined that 12 is not in the flash position,
When 25 is determined to be inappropriate or when the mounted lens is determined to be inappropriate, a warning is displayed (S81 to S87). The determination that the light emitting unit 12 is not at the light emitting position is made by turning the up detection switch SW4 ON / OFF as described above.
Detected by OFF.

Further, in the display subroutine, the four types of light emission modes of the above-mentioned strobe light and the setting information of the camera are displayed (S89).

As described above, the strobe control device according to the present embodiment determines whether or not to use the strobe based on the subject brightness and the lens information. Exposure with Here, when the light emitting unit 12 cannot be raised to a normal light emitting position due to some cause, for example, the light emitting unit 12 collides with an external strobe, the built-in strobe is prohibited from being fired, and the external strobe is allowed to emit light to set an appropriate shutter speed. Exposure is performed according to the aperture value.

Also, the flash unit does not have an external flash
If 12 does not reach the proper light emission position, the built-in flash is prohibited, and proper exposure is performed without firing the flash. Therefore, a photographing error due to abnormal irradiation of the built-in strobe is eliminated, and a shutter chance is not lost due to prohibition of exposure.

As described above, in the present embodiment, the light emitting unit 12 is supported by the retractable link mechanism using the lever 13, but the supporting mechanism of the light emitting unit 12 is not limited thereto, and may be a pop-up mechanism. The mechanism for driving the light-emitting unit 12 between the storage position and the light-emitting position may be another mechanism such as a cam mechanism instead of the gear mechanism. The movement from the storage position to the light-emitting position or one of the opposite movement is performed by a spring force. May be performed.

Further, in the present embodiment, the determination as to whether or not to use the strobe in the automatic light emission mode is made based on the shutter speed calculated based on the photometric subject brightness or the like. However, it is determined simply based on the subject brightness. You may.

[Effects of the Invention] As is clear from the above description, according to the camera strobe control device of the present invention, when the light emitting section of the built-in strobe does not move to the proper light emitting position, the built-in strobe light emission is prohibited and the built-in strobe is Since photographing is performed with an appropriate exposure value in a state where light is not emitted, a photographing error due to abnormal irradiation of a strobe is eliminated, and a chance of being shot because a shutter is not released is not lost.

If the built-in flash unit cannot be moved to the proper flash position when the flash unit fires, if the built-in flash unit cannot be moved to the proper flash position, only the built-in flash unit is prohibited and the external flash unit will fire. Then, shooting is performed with an appropriate exposure value, so that shooting can be performed with a normal flash emission effect.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of a retractable strobe whose operation is controlled by a camera strobe control device of the present invention. FIG. 2 is a single-lens reflex camera equipped with the camera strobe control device of the present invention. FIG. 3 is a front view showing the camera in a state where a light emitting unit is moved to a light emitting position and an external strobe is mounted. FIG. 3 is a schematic configuration diagram showing a circuit configuration of an embodiment of a camera strobe control device of the present invention. 4A, 4B, 4C and 5 are operation flowcharts of the embodiment. 10 camera body, 12 light emitting unit, 13 lever (support mechanism), 16 strobe motor, 20 camera control circuit (control means), 21 photometric sensor, 22 photometric circuit, 23 lens RO
M, 25 ... External strobe, 28 ... Display circuit, 29 ... LCD panel. SW4… Up detection switch (detection means).

Claims (6)

(57) [Claims] The camera is supported by a camera body by a support mechanism.
And a driving mechanism for moving the light-emitting part between the storage position and the light-emitting position, the camera comprising: a light-emitting part of a built-in flash moved to a storage position and a light-emitting position by the support mechanism; Detecting means for detecting that the built-in strobe is at the light-emitting position; and when the built-in strobe is made to emit light, the drive mechanism is operated to move the light-emitting portion to the light-emitting position, and after the light emission ends, to the storage position, A strobe control device for a camera, comprising: control means for prohibiting light emission of the built-in strobe when the detecting means does not detect that the light emitting portion is at the light emitting position when emitting light. 2. A flash control device for a camera according to claim 1, wherein said control means sets a shutter speed to a flash tuning speed when a built-in flash is emitted. 3. A control system according to claim 1, wherein said control means sets a shutter speed to a flash synchronizing speed when the built-in flash is to emit light, and when said detecting means does not detect that the light emitting portion is at the light emitting position, A flash control device for a camera, wherein light emission is prohibited and an exposure factor is set to an appropriate exposure value in a state where the built-in flash is not fired to perform exposure. 4. The camera according to claim 1, further comprising photometric means for measuring the brightness of the subject, wherein said control means activates said driving mechanism when a photometric value obtained by said photometric means is lower than a predetermined value. Moving the light emitting unit to a light emitting position, and when the detecting means detects that the light emitting unit is at the light emitting position, sets a shutter speed to a flash synchronizing speed and causes the built-in flash to emit light to perform proper exposure; A strobe control device for a camera, wherein a proper exposure is performed without firing a built-in strobe when it is not detected that a light emitting portion is at a light emitting position. 5. A camera according to claim 1, further comprising an external strobe mounted thereon, wherein said control means controls said camera to be mounted when a predetermined external strobe is mounted. A strobe control device for a camera, which emits the predetermined external strobe together with the built-in strobe. 6. The control means according to claim 5, wherein said control means includes a built-in flash unit when the external flash unit is mounted and said detection unit does not detect that said light emitting unit is at a light emitting position. A strobe control device for a camera, wherein the strobe light is prohibited and only the external strobe is fired.