JPH09138447A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely execute a bounce-photographing action by simple operation by changing the light emission timing of a flash light emission and irradiation means in a bounce-irradiation state and controlling the light emitting action thereof. SOLUTION: When a stroboscopic unit 58 is turned in an upper direction and inclined upward, it is detected by releasing the pressing state of a bounce- state detection button 59 that the unit 58 is set in a bounce-irradiation state. When a bounce-irradiating action that an object is irradiated with stroboscopic light after the stroboscopic light is reflected on a substance other than the object is executed, an excellent photographed result (photographic print or the like) is obtained by deciding the light emission timing of a stroboscope by considering the aperture diameter of a sector shutter and controlling the light emitting action of the unit 58 based on the decided light emission timing.

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 provided with a shutter having a shutter blade that also serves as a diaphragm for opening and closing an exposure aperture, and a flash light emitting means.

[0002]

2. Description of the Related Art Conventionally, when a photograph is taken by a camera or the like and the photographing environment is, for example, a low-luminance environment, a flash light emitting means such as a strobe or a flash is used. It is common practice to use auxiliary light from a light emitting device or the like.

When a photograph is taken by using the flash light emitting device or the like as described above, when the illumination light of the flash light emitting device or the like is applied from the front of the subject, a clear shadow is formed on the background of the subject. The resulting photo can be very unsightly.

Therefore, there are various means for diffusing and irradiating the illumination light from the flash light emitting device or the like to soften the illumination light directly applied to the subject and suppress a clear shadow or the like generated behind the subject. Considered and commonly used.

For example, a so-called diffuser for arranging a diffuser plate or the like in front of a light emitting portion of a flash light emitting device to soften illumination light of the flash light emitting device or the like to make shadows and the like behind a subject inconspicuous, The light emitting portion of the flash light emitting device or the like is arranged so as to be capable of irradiating upward or left and right, and the illumination light of the flash light emitting device or the like is reflected on the ceiling, the wall, etc., and the reflected light is applied to the subject. Various types of so-called bounce photography are used.

A flash light emitting device or the like capable of easily performing the bounce photographing is disclosed in, for example, Japanese Patent Laid-Open No. 58-5.
5918, JP-A-60-3614, JP-A-61-107228, JP-A-2-53038, and the like, two light emitting portions are arranged, and one of the light emitting portions is arranged in the vertical direction. Or provided so that it can rotate in the left-right direction,
Various types of devices that can irradiate a subject other than the front face have been proposed and generally put into practical use.

[0007]

However, the above-mentioned JP-A-58-55918, JP-A-60-3614, JP-A-61-107228, and JP-A-2-53.
Most of the means and the like disclosed in Japanese Patent Publication No. 038, etc. relate to a high-performance flash light emitting device or the like that is used by being attached to, for example, a single-lens reflex camera, etc. It is not applicable to the so-called compact and light-weighted so-called compact cameras that are widely used. That is, when the high-performance flash light emitting device or the like as described above is applied by being built in the compact camera or the like, there is a problem that the size of the camera itself and the cost thereof are increased.

Further, in order to obtain proper exposure when performing the above-mentioned bounce photographing, for example, the reflectance of an object other than the subject for bounce irradiation light, such as a ceiling or a wall, the ambient light level under the photographing environment. , It is necessary to consider various external conditions such as the position of the subject, and complicated calculations and experience values are required, but a compact camera etc. incorporating the above-mentioned small flash light emitting device etc.
Since it is considered to be used by photographers with relatively little experience, when the flash light emitting device etc. built into the compact camera etc. is provided with a function for bounce photographing etc. It is also considered difficult to obtain good results (photographic prints) by taking appropriate bounce shots.

The object of the present invention is to solve the above-mentioned problems of the prior art and to secure a simple operation in a shutter having a shutter blade that also serves as a diaphragm for opening and closing an exposure opening, a compact camera having a flash light emitting means incorporated therein, and the like. (EN) Provided is a camera capable of performing bounce shooting and easily obtaining a high-quality photograph with better depiction.

[0010]

The camera according to the present invention comprises:
In a camera provided with a shutter having a shutter blade that also serves as a diaphragm that opens and closes an exposure opening, a standard irradiation state in which illumination light is directly directed toward a subject and the above-mentioned subject after the illumination light is reflected on an object other than the subject One of the bounce irradiation state for irradiating, a means for determining a proper light emission timing of the flash light emitting means with respect to the opening operation of the shutter, the standard irradiation state and the above Light emission control means for controlling light emission by changing the light emission timing of the flash light emission irradiation means in the bounce irradiation state.

Further, in a camera provided with a shutter having a shutter blade that also serves as a diaphragm for opening and closing an exposure aperture, a standard irradiation state in which illumination light is directly irradiated toward a subject,
Flash light emitting means capable of selecting one of a bounce irradiation state in which the illumination light is reflected on an object other than the subject and then irradiates the subject, a distance measuring means for measuring a distance to a main subject, and the flash light When the light emission irradiation means is in the standard irradiation state, the light emission timing is determined based on at least the subject distance by the distance measuring means, and in the bounce irradiation state, the aperture diameter of the shutter is considered. And a light emission control means for controlling light emission of the flash light emission irradiation means at the determined light emission timing.

The light emission timing in the bounce irradiation state is when the opening diameter of the shutter is in the fully open state.

With this configuration, the proper light emission timing of the flash light emission irradiation means is determined for the opening operation of the shutter having the shutter blade that also serves as the diaphragm for opening and closing the exposure opening, and the light emission control means determines the standard irradiation state. The light emission timing of the flash light emission irradiation means is changed depending on the bounce irradiation state to control the light emission.

Further, when the flash light emitting means is in the standard irradiation state, the light emission timing is determined based on at least the object distance by the distance measuring means, and in the bounce irradiation state, the aperture diameter of the shutter is set. The light emission timing is determined in consideration of the above. At this time, the light emission timing in the bounce irradiation state is when the opening diameter of the shutter is in the fully open state, and the light emission control means controls the light emission of the flash light emission means at the determined light emission timing.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. 1 and 2 are schematic perspective views showing the appearance of a camera according to an embodiment of the present invention.
FIG. 2 shows the case where the flash light emitting means incorporated in the camera is in the standard irradiation state, and FIG. 2 shows the case where the flash light emitting means incorporated in the camera is in the bounce irradiation state. Here, the standard irradiation state (standard irradiation position) of the flash light emission irradiation means represents a state (position) in which the illumination light by the flash light emission irradiation means is directly irradiated toward the subject, and the bounce irradiation state is also mentioned. The (bounce irradiation position) represents a state (position) in which the illumination light from the flash light emission irradiation means is reflected on an object other than the object and then is irradiated to the object. In addition, in FIG. 1 and FIG. 2, in order to avoid complication of the drawings, the illustration is omitted except for the constituent members according to the present invention.

As shown in FIGS. 1 and 2, the camera body 50
A grip 54 for the photographer to hold the camera body 50 is provided at one end of the
Release button 32 for generating a shutter release signal
And a strobe unit 58, which is a flash light emitting unit and a flash light emitting device, is arranged on the upper end side of the other end of the camera body 50 so that the light emitting unit is rotatable upward. It is set up. In other words, by rotating the light emitting portion of the strobe unit 58 upward,
The illumination light from the light emitting part is reflected on an object other than the subject and then the subject is irradiated with the bounce irradiation state, and by directing the light emitting part to the front, the illumination light from the light emitting part is directly directed to the subject. It is possible to select one of the standard irradiation state for irradiation.

In this case, for example, a photographer is required as the selecting means for rotating the light emitting portion upward, that is, the setting means for setting the strobe unit 58 to the standard irradiation position or the bounce irradiation position. Accordingly, a means for directly rotating the light emitting unit by hand can be considered, but the invention is not limited to this. For example, by rotating the light emitting unit electrically by a driving mechanism or the like, the standard irradiation state and the bounce irradiation can be performed. The state may be selectable.

A bounce state detection button 59, which is a bounce detection means, is provided on the camera body 50 side at a position where the bottom surface portion of the strobe unit 58 and the exterior portion of the camera body 50 contact each other. Therefore, when the strobe unit 58 is in the standard irradiation state, the bounce state detection button 59 is pressed by the bottom surface portion of the strobe unit 58.

The bounce state detection button 59 is a bounce state detection switch (bounce detection means; not shown in FIGS. 1 and 2) provided in the camera body 50. In FIG. Show.)
The state of the strobe unit 58 is detected in conjunction with.

That is, as described above, the strobe unit 58 is adapted to be capable of irradiating the illumination light toward the direction other than the front by rotating the strobe unit 58 in the upward direction. You can shoot bounces. In this case, when the strobe unit 58 is rotated upward and tilted upward, the bounce state detection button 59
When the pressed state of is released, it is detected that the strobe unit 58 is in the bounce irradiation state.

A lens barrel 51 for holding a photographic optical system therein is disposed in the substantially central portion on the front side of the camera body 50. The camera body is provided with the lens barrel 51. In the vicinity of the front side of 50, a finder window that forms a finder optical system (not shown) provided in the camera body 50 for observing an object and determining the composition when taking a picture or the like. 52 is provided.

In the vicinity of the viewfinder window 52, the camera body 5 is provided for measuring the field brightness, ambient light and the like.
0, and an ambient light measuring circuit (not shown in FIGS. 1 and 2) including, for example, a photometric sensor (not shown in FIGS. 1 and 2; indicated by reference numeral 15 in FIG. 3 described later) and the like. (See reference numeral 14 in FIG. 3 to be described later.) Is provided with a photometric window 53 of photometric means,
Below the photometric window 53, the strobe unit 58 is provided.
And a strobe light metering sensor (not shown in FIGS. 1 and 2; reference numerals 30 and 31 in FIG. 3, which will be described later), and the like. A strobe light measuring window 55 forming a light measuring means is provided.

Further, on both sides of the finder window 52 and the photometry window 53 arranged on the front side of the camera body 50, a distance measuring light emitting / receiving lens (not shown in FIGS. 1 and 2; not shown). In FIG. 3, the autofocus (AF) formed by reference numerals 11 and 12, etc.)
Light emitting and receiving windows 56 and 57 are provided.

FIG. 3 is a block diagram showing the internal structure of the camera of the above embodiment. The internal configuration of the camera will be described below with reference to FIG. 3 and the above-described FIGS. 1 and 2.

As shown in FIG. 3, the camera of the above-described embodiment is provided in the camera body 50 for controlling the entire camera, and is provided with a control circuit 1 formed by, for example, a CPU or the like. Various circuits and the like are electrically connected to the control circuit 1.

The control circuit 1 includes a DX of a film cartridge 3 in which a roll film 5 is wound and accommodated.
A film feeding mechanism via a film feeding motor 6 for feeding a DX code input circuit 2 for reading film information such as film ISO sensitivity from a code and a film 5 fed from the patrone 3. A film feed circuit 4 for driving and controlling the film 7, and a film feed state detection circuit 24 for detecting perforations of the film 5 during the film feed operation by the film feed circuit 4 and detecting the amount of movement thereof. Formed by a distance measuring circuit 8 which is a distance measuring means for measuring a distance to a main subject 9 located substantially in the center of the photographing screen, a photometric sensor 15 for measuring the field brightness including the subject 9 and the like. The ambient light measuring circuit 14 and the drive mechanism for opening and closing the sector shutter 17 having a shutter blade that also serves as an aperture for opening and closing the exposure opening. The shutter control circuit 16 for controlling the drive of the ranger 18, the sector position detection switch 19 for detecting the position of the sector shutter 17, and the inside of the lens barrel 51 based on the subject distance information obtained by the distance measuring circuit 8 and the like. Of the photographic optical system held by the motor drive circuit 20 for driving and controlling the drive motor 22 that moves the focus adjustment lens 21 along the optical axis direction via the focus drive mechanism 23, and the reference of the focus adjustment lens 21. A lens movement state detection circuit 25 for detecting a movement state from a position, and a strobe circuit 26 for performing light emission control and charging of the strobe unit 58 including a light emitting portion 27 formed by a reflector, a xenon (Xe) tube and the like. , Whether the light emitting portion 27 of the strobe unit 58 has been rotated upward to perform the bounce photographing. That is, the bounce state detection switch 28 that detects the state of the strobe unit 58 in conjunction with the bounce state detection button 59 and the strobe light from the light emitting portion 27 of the strobe unit 58 are emitted toward the subject 9. When this is done, the strobe light measuring circuit 29 for detecting the reflected signal light and the operation state of the release button 32 arranged above the grip 54, that is, the first-stage ON state (half-pressed state). Alternatively, the first (1st.) Release detection switch 33 and the second (2nd.) Release detection switch 34 responding to the second-stage ON state (fully pressed state) and a mode for setting the operation mode of this camera Setting circuit 35
And the operation mode of the camera, shooting conditions, and the like, for example, a liquid crystal display (LC
D; not shown), or a display circuit 36 or the like for displaying on display means or the like such as a display unit (described later, see FIG. 5) provided in the finder is electrically connected directly or indirectly. Has been done.

The DX code input circuit 2 is provided on the film cartridge 3 by printing or the like when the film cartridge 3 is loaded in the camera body 50.
For example, film information such as film ISO speed is read from the X code or the like.

The distance measuring circuit 8 projects a light beam emitted by a light projecting element 10 such as a light emitting diode (LED) toward a subject 9 through a light projecting lens 11, and receives the reflected signal light from the light receiving lens. The light is condensed by 12, and the light is received by a light receiving element 13 which is a light amount signal means and is a light detecting element (PSD) and the distance to the subject 9 is measured based on the light receiving position. Then, the data (digital value) such as the subject distance information obtained here is transmitted to the CPU 1.

As described above, the shutter control circuit 16 is a circuit for controlling the driving of the plunger 18 to open / close the sector shutter 17. The sector shutter 17 has a triangular opening characteristic. This is a shutter that also serves as a diaphragm.

That is, the sector shutter 17 has its sector opening (exposure opening) gradually opened by an ON signal from the plunger 18 when the plunger 18 is driven and controlled by the shutter control circuit 16. On the other hand, the OFF signal from the plunger 18 causes the sector opening (exposure opening) to be rapidly closed. For the start of the opening operation of the sector opening (exposure opening), the sector position is set. Detection switch 19
It is detected by.

A strobe light metering sensor 31 is electrically connected to the strobe light measuring circuit 29, and a condenser lens 30 arranged in front of the strobe light measuring sensor 31 causes the light emitting portion 27 of the strobe unit 58 to reach the subject 9. The reflected signal light when the strobe light is radiated toward it is guided so that only the substantially central portion of the photographing screen is metered. Therefore, only the reflected signal light from the main subject 9 located substantially in the center of the shooting screen is measured without being affected by the ambient light.
The exposure accuracy of the main subject 9 is further improved.

Among the operation modes of the camera set by the mode setting circuit 35, the strobe mode is particularly related to the present invention, and the strobe mode includes photographing conditions such as subject brightness. Auto flash mode, which automatically turns off the flash, or prohibits the flash to be fired, Strobe off mode that forcibly prohibits the flash to be fired regardless of shooting conditions such as subject brightness, and outdoors during the day Etc., there is a daytime sync mode in which a strobe is caused to emit light depending on shooting conditions such as backlight and shade.

Next, the parts of the camera related to the flash unit 58, the strobe circuit 26, the strobe light measuring circuit 29, etc., related to the flash light emitting means (strobe etc.) will be described in detail below.

FIG. 4 is a block diagram showing the internal structure of the strobe-related part of the camera of the above-described embodiment.

As described above, the strobe circuit 26, the strobe light measuring circuit 29, the bounce state detection switch 28, etc. are electrically connected to the control circuit 1, and the strobe circuit 26 is connected to the strobe circuit 26. Is electrically connected to the light emitting portion 27 of the strobe unit 58, and the strobe photometric sensor 31 is electrically connected to the strobe light measuring circuit 29 (see FIGS. 3 and 4).

As shown in FIG. 4, the strobe circuit 26 is provided.
A DC / DC converter 61, which is disposed inside the camera body 50 and boosts the voltage of a power supply 60 for supplying power to the entire camera to a strobe light emission voltage, and charges for strobe light emission are charged ( Main capacitor 63 for charging), a charging voltage detection circuit 62 for detecting the charging voltage of the main capacitor 63, a trigger circuit 64 for outputting a trigger signal for starting strobe light emission, and a strobe unit 58. A light emission control circuit 65, which is a light emission control means for controlling light emission, is provided.

Further, in the strobe light measuring circuit 29, when the light emitting section 27 of the strobe unit 58 is in the bounce irradiation state, the irradiation light emitted from the light emitting section 27 is reflected on the subject 9 and When the reflected signal light is incident on the strobe photometric sensor 31 through the condenser lens 30, an integrating circuit 71 that integrates the photocurrent from the strobe photometric sensor 31 and an integrated output of the integrating circuit 71 are predetermined. A determination circuit 70 for determining whether or not the level has been reached and transmitting the determination signal to the control circuit 1, and a determination level setting circuit 72 for transmitting the determination level instructed by the control circuit 1 to the determination circuit 70. Etc. are provided.

The operation of the strobe-related portion of the camera of the above-described one embodiment thus configured will be briefly described below.

First, the control circuit 1 outputs the output port O
By sending a control signal from the (O) 1 to the DC / DC converter 61, the DC / DC converter 61
Boosting operation is performed in the main capacitor 6
Charge to 3 is started.

When the charging voltage detecting circuit 62 detects that the charging of the main capacitor 63 has reached a predetermined voltage level, the charging voltage detecting circuit 62
Transmits a charging completion signal to the input port I (eye) 1 of the control circuit 1, and the control circuit 1 stops the boosting operation of the DC / DC converter 61 in response to the charging completion signal.

In this state, the release button 3
When the flash photography is performed by operating 2 or the like, the control circuit 1 causes the trigger circuit 6 to operate.
A trigger signal for initiating the strobe light emission is transmitted from the output port O2. Then, the trigger circuit 64 receives the trigger signal and changes the charge charged in the main capacitor 63 to the light emission control circuit 65.
Through the flash unit 58 and is discharged to the xenon (Xe) tube 66 arranged in the light emitting portion 27 of the strobe unit 58. This starts strobe emission.

In this case, the control circuit 1 determines the timing for stopping the stroboscopic light emission.
The light emission control circuit 65 is controlled via the output port O4. This light emission control operation is largely performed when the strobe unit 58 is in the standard irradiation state and when it is in the bounce irradiation state. Since it is different, details of this will be described later.

Further, the control circuit 1 takes in the signal of the bounce state detection switch 28 via its input port I2, so that the state of the strobe unit 58 is the standard irradiation state or the bounce irradiation state. Make a decision.

That is, when the light emitting portion 27 of the strobe unit 58 is turned and tilted upward as shown by the one-dot chain line in FIG. 4, the strobe unit 58 is in the bounce irradiation state. , The bounce state detection switch 28 linked to the bounce state detection button 59 is turned on, and this signal is transmitted to the control circuit 1. As a result, it is determined that the strobe unit 58 is in the bounce irradiation state.

On the other hand, when the strobe unit 58 is set to the standard irradiation state by directing the light emitting portion 27 of the strobe unit 58 to the front as shown by the solid line in FIG. 4, the bounce state detection is performed. The bounce state detection switch 28 linked to the button 59
Is turned off, and this signal is transmitted to the control circuit 1. As a result, it is judged that the strobe unit 58 is in the standard irradiation state.

As described above, the control circuit 1 outputs the trigger signal to the trigger circuit 64 and then the strobe light measuring circuit 2 which is input to the input port I3).
Wait for input signal from 9. When a signal from the strobe light measuring circuit 29 is input, the control circuit 1 receives the signal and outputs a light emission stop signal from the output port O4 to the light emission control circuit 65. As a result, the flash emission is stopped.

As described above, when the strobe light emitted by the light emitting section 27 of the strobe unit 58 in the bounce irradiation state is reflected toward an object other than the object and then is irradiated toward the object, the reflection signal thereof is generated. The light is condensed by the condenser lens 30 and enters the strobe photometric sensor 31. Here, the strobe light measuring circuit 29 is used.
In, the photocurrent from the strobe photometric sensor 31 is integrated by the integration circuit 71 and the result is output to the determination circuit 70. Then, the determination circuit 70
In step 1, it is determined whether the integrated output of the integration circuit 71 has reached a predetermined level, and the determination signal is output to the input port I3 of the control circuit 1.

At this time, the predetermined decision level is given to the decision circuit 70 from the control circuit 1 via the output port O3 by the decision level setting circuit 72.

When a reset signal is output from the output port O5 of the control circuit 1 to the integrator circuit 71, the integrator circuit 71 is reset (initialized).

FIG. 5 is a diagram simply showing the inside of the field of view of the finder in the camera of the one embodiment. As shown in FIG. 5, in the lower part outside the frame of the finder field frame 100,
For example, a display unit 107 that is a display unit and a warning unit that is formed by a light emitting diode (LED) or the like is provided. Information such as setting conditions such as a setting mode of the camera and shooting conditions is displayed on the display unit 107 by the display circuit 36, such as lighting and blinking of characters and pictograms.
It is designed to be displayed by turning off the light.

As described above, the display section 107 is adapted to display various information and the like by being illuminated from behind by, for example, a light emitting diode (LED) or the like, and the control circuit 1 is required. Accordingly, the light emitting diode (LED) at the corresponding position on the display unit 107
By turning on, flashing, turning off, etc., the setting state of the camera can be visually recognized in the viewfinder field.

Further, a distance measuring frame 101 indicating a distance measuring range and a photometric frame 1 for measuring the brightness in a range substantially equal to the distance measuring range are provided in the approximate center of the viewfinder field frame 100.
02 is displayed, and the photometric frame 102 indicates the photometric range of the strobe photometric sensor 31. .

Here, regarding the pictograms and the like displayed in the display unit 107, the symbols 103 to 10 shown in FIG.
6 will be described.

For example, the pictogram 103 indicates the charging state of the main capacitor 63, that is, the charging / non-charging state of the strobe, and is turned on when the strobe charging is completed, and is displayed when the strobe is not charged. It's turned off.

Further, the pictogram 104 is for displaying the state of the strobe unit 58, and when the light emitting portion 27 of the strobe unit 58 is in the bounce irradiation state, it is turned on or blinks at the bounce irradiation position. It is an irradiation position display means for performing a display that makes it possible to identify that.

Then, the pictogram 105 is turned on when the bounce photographing is performed and it is determined that the proper light amount cannot be given to the main subject 9 in the central portion of the photographing screen after the photographing is finished. In addition, if it is known in advance that the proper exposure cannot be obtained even after performing bounce shooting, for example, when the subject is at a very long distance, it will start blinking. There is.

Further, the pictogram 106 is made to blink when the distance measuring operation (AF operation) performed by the distance measuring circuit 8 is impossible, for example, when the subject is very close. When the distance measuring operation (AF operation) can be properly performed, this is turned on.

The various information displayed on the display unit 107 is not limited to the pictograms 103 to 106 described above, and various information such as the setting state of the camera can be visually recognized in an easy-to-understand manner. According to.

Next, the operation of the camera of the above-described embodiment when a picture is taken will be described below with reference to FIGS.

FIG. 6 is a main flowchart showing an operation sequence in the camera of the one embodiment.
In a normal case, the camera according to this embodiment is set to a mode in which the current consumption is reduced by stopping the oscillation operation of the control circuit 1, that is, an energy saving mode. In the energy saving mode, any one of the operation members provided on the camera exterior is operated by the operator of the camera to interrupt the control circuit 1,
The operation (main routine shown in FIG. 6) is started.

As shown in FIG. 6, first, in step S1, it is confirmed whether or not the operator of this camera has opened and closed a back cover (not shown) provided on the back side of the camera. Is performed. The back cover is provided to insert and remove the film cartridge 3 in which the roll-shaped film 5 is housed in the camera body. By confirming the opening / closing operation of the back cover, It is confirmed whether or not the film cartridge 3 has been loaded. In this case, when it is determined that the opening / closing operation of the camera back lid has been performed, the process proceeds to step S2, and in step S2,
The control circuit 1 controls the film feeding circuit 4, the film feeding motor 6, the film feeding mechanism 7, etc. to feed the film 5 in the film cartridge 3 to a predetermined position in the camera body. The setting <auto load (automatic feeding)> is executed, and the process proceeds to the next step S3.

On the other hand, when it is determined in step S1 that the back cover of the camera has not been opened / closed, it is determined that the film 5 is already loaded in the camera body, and Then, the process proceeds to step S3.

In step S3, the control circuit 1
Controls the strobe circuit 26 to check the state of charge,
That is, it is determined whether or not strobe charging is necessary. Here, the charge voltage detection circuit 62 in the strobe circuit 26 detects whether or not the charge voltage level to the main capacitor 63 has reached a predetermined value, and the charge voltage level to the main capacitor 63 is detected. If it is determined that the predetermined value has been reached, step S
Proceed to step 5.

On the other hand, if it is determined in the above step S3 that the charging voltage level to the main capacitor 63 has not reached the predetermined value, the process proceeds to the next step S4, in which the above described step S4 is performed. As described in FIG. 4 of FIG.
After controlling the DC converter 61 to execute the boosting operation to charge the main capacitor 63, the process proceeds to step S5.

In step S5, the control circuit 1
Confirms whether or not the first step of the release button 32 is in the ON state (half-pressed state) by the first (1st.) Release detection switch 33. Here, the first stage of the release button 32 is in the off state, that is, 1st. If it is determined that the release has not been made, the process proceeds to step S6, and in step S6, it is determined whether the state of the main power switch (main switch (SW); not shown) of the camera is off. If it is determined that the main SW is in the off state, <end processing> is executed in step S7, the process proceeds to step S8, and the energy saving mode is entered in step S8. , The camera returns to the standby state and ends the series of sequences.

If it is determined in step S6 that the main SW is not in the off state, the process returns to step S1.

On the other hand, in the above-mentioned step S5, the first release detection switch 33 causes the first release. When the release is detected, it is determined that the first step of the release button 32 is in the ON state,
The process proceeds to the next step S9.

In step S9, the control circuit 1
Controls the distance measuring circuit 8 to perform a distance measuring operation. Then, the control circuit 1 reads the obtained digital distance measurement data as the subject distance information DV, and then proceeds to the processing of the next step S10.

In step S10, the control circuit 1
Confirms whether or not the second step of the release button 32 is in the ON state (fully pressed state) by the second (2nd.) Release detection switch 34. Here, the second stage of the release button 32 is in the off state, that is, 2nd. If it is determined that the release has not been performed, the process proceeds to step S11, and in step S11, the 1st. Check the release status and check the 1st. If it is determined that the release is not on, the process proceeds to step S6,
The processes from step S6 to step S8 described above are executed, and the series of sequences is ended.

In step S11 described above, 1
st. When it is determined that the release ON state is maintained, the process proceeds to step S12,
In this step S12, the subject distance information DV obtained in step S9 is confirmed, and if the subject distance is not more than 5 m, that is, if the subject distance is less than 5 m, the process of step S10 described above is performed. Return to and repeat the subsequent processing.

In step S12 described above, the subject distance information DV obtained in step S9 described above is obtained.
If the subject distance is 5 m or more, the next step S
In step S13, the control circuit 1 confirms by the bounce state detection switch 28 whether or not the strobe unit 58 is in the bounce irradiation state. Here, when the light emitting portion 27 of the strobe unit 58 detects that the bounce state detection switch 28 is in the off state, it is determined that the strobe unit 58 is not in the bounce irradiation state, and the above-described steps are performed. The process returns to S10, and the subsequent processes are repeated.

That is, in step S12 described above,
The control circuit 1 compares the subject distance information DV obtained by the distance measuring circuit 8 with a preset predetermined distance, and when the subject distance (DV) is longer than the predetermined distance, the bounce shooting is performed. It is a detection unit and a determination unit that detects and determines that the shooting situation is unsuitable.

When it is detected in step S13 that the bounce state detection switch 28 is on by the light emitting section 27 of the strobe unit 58, the strobe unit 58 is in the bounce irradiation state. Then, in step S14, the control circuit 1 controls the display circuit 36 to execute the <display B> subroutine, and then the process in step S10 described above is performed. Return to and repeat the subsequent processing.

The <display B> subroutine is as follows.
The strobe unit 58 is in the bounce irradiation state,
Moreover, when the subject distance is 5 m or more, for example, by blinking the pictogram 105 on the display unit 107 in the viewfinder field described in FIG.
This is a subroutine for giving a warning to the operator of the camera that bounce photographing is not suitable.

That is, in the above-mentioned <display B> subroutine, when the bounce shooting is attempted even though the subject distance is 5 m or more, the 1st. When the release is kept on, the control circuit 1
Controls the display circuit 36 to display the pictogram 105 on the display unit 107 in the field of view of the finder, for example, 30
It is displayed by blinking by repeatedly turning on and off at intervals of 0 ms. As a result, the control circuit 1 confirms that the strobe unit 58 has been set to the bounce irradiation state, even though the determination means (control circuit 1) determines that the shooting state is not suitable for the bounce irradiation. , Is a warning means for warning the operator (photographer) of the camera.

On the other hand, in step S10 described above, the second step of the release button 32 is in the ON state, that is, 2nd. When it is determined that the release is performed, the process proceeds to step S15, and this step S15
In the above, the control circuit 1 executes the <exposure> subroutine (details will be described later; refer to FIG. 7), and after this exposure operation is performed, the process proceeds to the next step S16.
In this step S16, the control circuit 1
After executing the sub-frame winding> subroutine, the process proceeds to the next step S17.

The <1 frame winding> sub-routine is arranged so that the control circuit 1 controls the film feeding circuit 4 and the like after the exposure operation performed in step S15, so that The film is fed for one frame in order to set the image frame to be set at a predetermined position in the camera body.

In the <1 frame winding> routine, the control circuit 1 controls the film feeding circuit 4, and the film feeding circuit 4 causes the film feeding mechanism 7 to operate via the film feeding motor 6. Are driven and controlled. As a result, the film 5 for one frame of the film 5 sent from the film cartridge 3 is fed. Here, as described above, the film feeding for one frame is performed by the film feeding state detection circuit 24, which detects the perforation of the film 5 during the film feeding operation to determine the movement amount. It will be controlled.

In step S17, it is judged whether or not the film 5 has reached its final end, that is, whether or not it is the film end. Here, in the subroutine of <1 frame winding> in step S16 described above, when the film feeding state detection circuit 24 does not feed the film for one frame even after the lapse of a predetermined time, the film 5 is the film. When it is determined that the end is reached, the process proceeds to step S18
At 18, the <rewinding> subroutine is executed.

The <rewinding> subroutine is a routine for rewinding the filmed film 5 wound in the camera body into the film cartridge 3 and rewinding the film 5. When the operation is completed, the process proceeds to the next step S19, the <end process> is executed in this step S19, and the process proceeds to step S20. It returns to the standby state and ends the series of sequences.

On the other hand, when it is determined in step S17 that the film 5 is not the film end, the process proceeds to the next step S21, in which the control circuit 1 detects the bounce state. By confirming the state of the switch 28, it is confirmed whether or not the strobe unit 58 is in the bounce irradiation state. Here, the strobe unit 58
When it is determined that is not the bounce irradiation state, the process returns to the above-described step S1.

In step S21, when it is confirmed that the bounce state detection switch 28 is in the on state and it is determined that the strobe unit 58 is in the bounce irradiation state, the process proceeds to step S22. In step S22, the control circuit 1 controls the display circuit 36 to execute the <display A> subroutine, and then returns to the process of step S1 and repeats the subsequent processes.

The above-mentioned <display A> subroutine is carried out in order to inform the photographer of the fact that the proper exposure cannot be obtained by bounce photographing. For example, the display section in the viewfinder field of view. At 107, the fact that the proper exposure was not obtained by the bounce shooting is displayed by means such as lighting the pictogram 105 described above with reference to FIG. 5 for a predetermined time.

Next, step S15 in FIG. 6 described above.
<Exposure> Subroutine
The details will be described below.

FIG. 7 is a flowchart showing a subroutine of <exposure> in the operation sequence in the camera of the above-mentioned one embodiment.

As shown in FIG. 7, first, step S31.
In the control circuit 1, the ambient light measuring circuit 14
By controlling the main subject 9 in the shooting screen and the field brightness BV such as the peripheral brightness thereof, the process proceeds to the next step S32, and in this step S32, the control circuit 1 DX code input circuit 2
Information on the roll film 5 stored in the film cartridge 3 such as a DX code provided on the exterior portion of the film cartridge 3 by controlling the
For example, information such as the film ISO speed SV is read, and the process proceeds to the next step S33.

In step S33, the main subject 9 is properly exposed to the ambient light in the photographing screen on the basis of the information such as the field brightness BV and the film ISO sensitivity SV obtained in the above steps S31 and S32. The shutter speed value TVs of the sector shutter 17 is calculated to satisfy the above condition, and the process proceeds to the next step S34.

At step S34, the control circuit 1
Is checked whether or not the operation mode relating to the strobe of the camera set by the mode setting circuit 35 is the strobe off mode. Here, if it is determined that the operation mode is the strobe off mode, the process proceeds to step S35, and in this step S35, the strobe off (OFF) is performed.
The flag is set, and the process proceeds to the next step S39, in which the opening operation of the sector shutter 17 is performed.

That is, in the above step S39, the control circuit 1 controls the shutter control circuit 16 to drive the plunger 18, and the sector shutter 17
In the opening direction. In this case, the sector shutter 17 has a triangular aperture characteristic, and the opening operation is gradually performed until the aperture stop state is reached, and when the maximum aperture is reached, the aperture diameter is maintained. When the plunger 18 is turned off, the closing operation is rapidly performed by the urging force of the spring member or the like.

Regarding the timing for starting the closing operation of the sector shutter 17 at this time, the shutter speed value TVs calculated in the above-mentioned step S33.
Has passed, or the predetermined limit shutter speed value TVmax of the sector shutter 17 itself has passed.

Therefore, in step S39 described above,
After the opening operation of the sector shutter 17 is executed, the process proceeds to the next step S40, and when it is determined in this step S40 that the shutter speed value TVs calculated in the above step S33 has passed, ,
Proceeding to the process of step S48, in this step S48, the closing operation of the sector shutter 17 is performed,
After a series of sequence ends (return), this <exposure>
Exit the subroutine.

On the other hand, in step S40, if it is determined that the shutter speed value TVs has not elapsed, the process proceeds to the next step S41, and in step S41, the predetermined value of the sector shutter 17 itself. It is judged whether the limit shutter speed value TVmax of the above has passed, and here, the limit shutter speed value TV
If it is determined that max has elapsed, step S4
In step S48, the sector shutter 17 is similarly closed to end the series of sequences (return) and exit the <exposure> subroutine.

If it is determined in step S41 that the limit shutter speed value TVmax has not elapsed, the process returns to step S40 and the subsequent processes are repeated.

On the other hand, if it is determined in the above step S34 that the operation mode relating to the strobe of the camera is not set to the strobe off mode, the process proceeds to the next step S36, and in this step S36. , <Strobe setting> subroutine is executed, and the process proceeds to the next step S37.

The above <strobe setting> subroutine is as follows.
About the flash firing timing, the flash firing time, etc., each flash mode, that is, the auto flash mode,
This is a subroutine for setting according to the strobe off mode, daytime sync mode, or the like. Where <
For details of the strobe setting> subroutine, see FIG.
Will be described below.

FIG. 8 is a flowchart showing the <strobe setting> subroutine of the operation sequence in the camera of the above-described embodiment.

As shown in FIG. 8, first, step S61.
At, the state of the bounce state detection switch 28 is confirmed by the control circuit 1. Here, when it is determined that the bounce state detection switch 28 is in the off state, that is, the strobe unit 58 is set to the standard irradiation state, the process proceeds to the next step S62, and in this step S62. , The flash emission time TVF is calculated based on the subject distance information DV, the film ISO sensitivity information SV, and the like, and the next step S
The process proceeds to 63.

On the other hand, in step S61 described above, it is determined that the bounce state detection switch 28 is not in the off state, that is, the bounce state detection switch 28 is in the on state and the strobe unit 58 is in the bounce irradiation state. In this case, the process proceeds to the next step S74, and in this step S74, the strobe light emission time TVF is set to a fixed value TV1 which is a predetermined time until the sector shutter 17 reaches the open state (fully open state). After that, the process proceeds to step S73. In step S73, the strobe off flag is initialized (cleared), and then the series of sequences is ended (return).

That is, in the case of bounce photographing, generally, the amount of light reaching the main subject 9 is reduced as compared with the case of directly irradiating the main subject 9 with strobe light. It can be said that, when the strobe light is emitted from the light emitting unit 27 of the strobe unit 58, it is preferable that the aperture diameter of the sector shutter 17 (diaphragm aperture diameter of the photographing optical system) be opened as much as possible.

Therefore, in the camera of this embodiment, as described above, when performing the bounce photographing,
The strobe light emission time TVF is set to a fixed value TV1 which is a predetermined time until the sector shutter 17 is in the open state (fully open state).

After the strobe light emission time TVF is calculated in the above step S62, the process proceeds to the next step S63. In this step S63,
In the control circuit 1, the mode setting circuit 35 confirms which of the strobe modes in the camera operation mode is set. If the automatic strobe mode is set, the process proceeds to step S64. On the other hand, if it is determined that the daytime sync mode is set, the process proceeds to step S69.

When it is determined in step S63 that the auto strobe mode is set, and the process proceeds to step S64, in step S64,
Shutter speed value TVs and camera shake limit shutter speed value TV
Compare with 0. Here, the camera shake limit shutter speed value T
V0 means that when a photograph is taken by the camera, the photographer does not fix the camera by a tripod or the like, and the photographer holds the camera in his / her hand to take the photograph, that is, in the case of so-called handheld photographing, the photograph is taken. It means the limit shutter speed on the low speed side that can be achieved. This step S64
In the case where the relationship of TVs ≧ TV0 is established between the shutter speed value TVs and the camera shake limit shutter speed value TV0, the shutter speed value TVs is a value higher than the camera shake limit shutter speed value TV0. , And proceeds to the processing of step S65, and in this step S65, the strobe off flag is set. That is, in the automatic strobe mode, if the set shutter speed value is on the high speed side, that is, if proper exposure can be obtained without performing strobe light emission operation, strobe light emission is prohibited. In addition, when the field brightness BV is low, strobe light is automatically emitted.

Therefore, in step S64 described above,
The shutter speed value TVs is the camera shake limit shutter speed value TV
When it is determined that the speed is higher than 0, in order to prohibit the stroboscopic light emission, in step S65 described above,
After setting the strobe off flag, the series of sequences is ended (return), and the step S37 of FIG. 7 is performed.
Proceed to processing.

On the other hand, when the relationship of TVs ≧ TV0 is not established between the shutter speed value TVs and the camera shake limit shutter speed value TV0 in the above step S64, the shutter speed value TVs is set as the camera shake limit shutter speed. Since the value is lower than the value TV0, step S
In step S66, the shutter speed value TVs is set to the camera shake limit shutter speed value T in step S66.
After limiting to V0, the process proceeds to the next step S67, and in this step S67, the flash emission time TVF and the camera shake limit shutter speed value TV0 are compared. Here, when the relationship of TVF ≧ TV0 is established, the process proceeds to step S71. So in this case,
Since the flash light emission time TVF is faster than the camera shake limit shutter speed value TV0, the flash light emission operation ends while the sector shutter 17 is in the open state, and the flash light emission can be used. It is ready.

In step S67, the flash emission time TVF and the camera shake limit shutter speed value TV are displayed.
If the relationship of TVF ≧ TV0 is not satisfied with 0, the process proceeds to step S68, and this step S68
In step S7, the strobe light emission time TVF is replaced with the camera shake limit shutter speed value TV0 so that the strobe light emission ends before or at the same time as the sector shutter 17 is closed, and the process proceeds to step S71.

On the other hand, as described above, if it is determined in step S63 that the daytime synchronization mode is set, and the process proceeds to step S69, this step S69 is executed.
At 69, the flash emission time TVF is compared with the shutter speed value TVs. Where TV
When the relationship of F ≧ TVs is established, the strobe light emission time TVF is on the higher speed side than the shutter speed value TVs, and therefore the strobe light emission ends while the sector shutter 17 is in the open state. Therefore, there is no problem because the flash light emission can be used, and the process proceeds to the next step S71.

In step S69 described above, the flash emission time TVF and the shutter speed value TVs are set.
, And TVF ≧ TVs, the shutter speed value TV is longer than the flash emission time TVF.
Since s is faster, the opening / closing operation of the shutter ends before the strobe light emission time TVF elapses. Therefore, in this case, the process proceeds to step S70, and the strobe light emission time TVF is replaced with the shutter speed value TVs in step S70. As a result, the stroboscopic light emission is completed before the sector shutter 17 is closed. And step S
Proceed to the processing of 71.

In step S71, the aperture aperture value AVF corresponding to this is calculated based on the strobe light emission time TVF determined in step S67 or step S68 or step S69 or step S70. Then, the process proceeds to S72.

In step S72, the strobe light emission amount TF is calculated based on the aperture value AVF calculated in step S71, the subject distance information DV, the film ISO sensitivity information SV, and the like. Here, the strobe light emission amount TF corresponds to a guide number in the flash light emission irradiation means or the like.

Then, the process proceeds to step S73, and in this step S73, the strobe off flag is cleared (initialized), a series of sequences is ended (return), and the <strobe setting> subroutine is exited. It will be.

In this way, after the <strobe setting> subroutine (flowchart in FIG. 8) in step S36 in FIG. 7 is executed, the process proceeds to step S37. In step S37, the control circuit 1 is operated. Confirms the state of the bounce state detection switch 28. If it is determined that the bounce state detection switch 28 is off, that is, the strobe unit 58 is in the standard irradiation state, step S38.
On the other hand, the bounce state detection switch 28
Is not in the off state (is in the on state), that is, when it is determined that the strobe unit 58 is in the bounce irradiation state, the process proceeds to step S49.

In step S37, it is determined that the strobe unit 58 is in the standard irradiation state,
When the process proceeds to step S38, it is confirmed in step S38 whether or not the strobe off flag is set, and here, the strobe off.
If the flag is set, as described in the <strobe setting> subroutine of FIG. 8 described above,
Since the automatic strobe mode is set and the field brightness is high, the process proceeds to step S39 described above, and the process after step S39, that is, the "strobe off mode" described above is performed. Similar processing is performed, and a series of sequences is ended (return).

On the other hand, if the strobe off flag is cleared in step S38, the process proceeds to step S42. In this state, the strobe unit 58 is set to the bounce irradiation state, as described in the <strobe setting> subroutine of FIG. 8 described above.

In step S42, the control circuit 1
Controls the shutter control circuit 16 to drive the plunger 18, operates the sector shutter 17 in the opening direction, and proceeds to the process of step S43. In step S43, the strobe light emission time TVF is set. After waiting for the passage of time, the process proceeds to step S44. In step S44, as described above, the light emission signal is output to the trigger circuit 64 via the output port O2 of the control circuit 1 and thereby, The electric charge charged in the main capacitor 63 is discharged to the Xe tube 66, the strobe light emission operation is executed, and the next step S
Proceed to the process of 45.

In step S45, after the above-mentioned stroboscopic light emission operation is started, the control circuit 1 waits until a predetermined stroboscopic light emission amount TF is emitted, and in the next step S46, the control circuit 1 outputs the above-mentioned stroboscopic light emission amount TF. By sending a light emission stop signal to the light emission control circuit 65, the strobe light emission operation is stopped, and the process proceeds to step S47. In step S47, the shutter speed value TVs is set.
After the elapse of the period, the process proceeds to the next step S48, in which the sector shutter 17 is closed, the series of sequence is ended (return), and the <exposure> subroutine is exited.

On the other hand, in step S37 described above, the bounce state detection switch 28 is not in the off state (is in the on state), that is, the strobe unit 58.
Is determined to be in the bounce irradiation state, and step S4
In step S49, the control circuit 1 sets the determination level in the determination level setting circuit 72 via the output port O3, and proceeds to the processing in step S50.

In step S50, the control circuit 1
Performs the operation of the sector shutter 17 in the opening direction, and proceeds to the processing of step S51.
In step S52, the process waits until the strobe light emission time TVF elapses, and then the process proceeds to step S52.
At 52, the control circuit 1 has its output port O5
Outputs a reset signal to the integration circuit 71 from
After resetting (initializing) the integrating circuit 71, the process proceeds to step S53, and in step S53,
The strobe light emission operation is started, and the process proceeds to step S54.

In step S54, the control circuit 1
Confirms whether or not a signal for judging whether or not the integrated output of the integrating circuit 71 by the judging circuit 70 has reached a predetermined level is input to the input port I3.
Here, if the determination signal is not input, the process proceeds to step S55, and in step S55,
It is confirmed whether or not a predetermined time tlim sufficient for strobe emission has elapsed, and here, the predetermined time tl is determined.
If im has not elapsed, the above step S54
Return to and repeat the subsequent processing.

If the determination signal is input in step S54, it is determined that the appropriate exposure amount in the bounce shooting has been reached, and the process proceeds to step S57. In step S57,
The strobe light emission operation is stopped, and the process proceeds to step S58. After the OK flag is set in step S58, the process proceeds to step s48, and in step S48, the sector shutter 17 is closed. , End the sequence (return),
Exit this <exposure> subroutine.

On the other hand, in step S55 described above, when the predetermined time tlim has elapsed, the determination signal is not input, so it is determined that proper exposure was not obtained in bounce photography at this time. Then, the process proceeds to step S56, and this step S56
In, clear the OK flag (initialization),
Proceeding to the process of step S48, in this step S48, the closing operation of the sector shutter 17 is performed,
After a series of sequence ends (return), this <exposure>
Exit the subroutine.

The OK flag is a flag that is set when a proper exposure is obtained when, for example, bounce shooting is performed, and the OK flag is set in step S22 described above with reference to FIG. Display A>
This is a reference when executing the subroutine.

As described above, according to the above-described embodiment, the sector shutter 17 having the shutter blade that also serves as the aperture for opening and closing the exposure opening, and the standard irradiation state in which the illumination light is directly irradiated to the subject, When bounce irradiation is performed by a camera including the strobe unit 58 capable of selecting one of the bounce irradiation states in which strobe light is reflected on an object other than the object and then irradiated on the object, the sector shutter 17 When the flash emission timing is determined in consideration of the aperture diameter and standard irradiation is performed, the flash emission timing is determined based on at least the subject distance by the distance measuring means, and the flash emission timing is determined according to the determined emission timing. Obtaining good shooting results (photo prints, etc.) by controlling the light emission of the strobe unit 58 It can be.

Further, at the time of bounce photographing, since the strobe light measuring circuit 29 measures only the substantially central portion of the photographing screen, it is not affected by the ambient light and the substantially central portion of the photographing screen is not affected. Since the main subject 9 located at is focused on and the exposure amount is directly measured only when the strobe light is emitted, the exposure amount to the main subject 9 is extremely excessive (over) or insufficient ( It is possible to secure an appropriate exposure amount without causing under. Therefore, a good shooting result can be obtained.

In the case of bounce shooting, it is usually considered to be shooting indoors.
When the distance to the object measured by the distance measuring circuit 8 is a long distance, it is determined that the shooting situation is unsuitable for bounce shooting, and at that time, the fact is displayed on the display unit 107 in the viewfinder field. By displaying in
Since the warning is given to the photographer, it is possible to prevent useless photography and avoid waste of film or the like.

In the camera of the above-described embodiment, the distance measuring circuit 8 and the strobe light measuring circuit 2 are used.
9 and the like are substantially central portions of the photographing screen (the distance measuring frame 10 shown in FIG.
(1. inside the photometry frame 102) is focused on, but further, a plurality of distance measurement frames and a plurality of photometry frames are set in the photographing screen, and the respective distance measurement frames and photometry frames are supported. The present invention can be similarly applied to a device having so-called multi-point distance measuring / light measuring means for performing distance measuring and light measuring in a range. In this case, of the subjects corresponding to the plurality of distance measuring and photometric points, for example, the subject at the closest position is determined to be the main subject, and when the bounce shooting is performed, the determined main subject is determined. The degree of freedom in composition can be increased by measuring only the signal light reflected from the subject.

In the camera of the above-described embodiment, the circuit system for measuring strobe light (strobe light measuring circuit 29) is arranged separately from the circuit system for measuring ambient light (ambient light measuring circuit 14). Although they are provided, they may be shared. In this case, for example, a high-pass filter and a low-pass filter are provided on the output side of the photometric sensor, and the output of the low-pass filter is used when measuring ambient light, and the high-pass filter is used when measuring strobe light. The output should be used respectively. With this configuration, the strobe light measuring circuit 29, the strobe light metering sensor 31,
Since members such as the condenser lens 30 can be omitted, the degree of freedom regarding the layout of the arrangement of the constituent members in the camera body is improved, and the size of the camera itself and the manufacturing cost can be reduced. You can

Further, in the camera of the above-described one embodiment, when the control circuit 1 determines that the shooting condition is not suitable for the bounce shooting, that is, the subject distance by the distance measuring means is a long distance. In such a case, a warning is given to the photographer by displaying the fact on the display unit 107 or the like.
At the same time, the release start operation may be prohibited by disabling the release.

Further, in the camera of the above-mentioned one embodiment, it is judged whether or not the bounce photographing is in an unsuitable photographing condition based on the subject distance by the distance measuring means, and the subject distance is a long distance. In this case, it is determined that the shooting situation is unsuitable, but not limited to this, the orientation of the camera body when taking a picture, that is, when the shooting screen is in a vertical position composition, or when shooting outdoors, That is, even when there is no object other than the subject to be reflected for bounce shooting, it is determined that the shooting situation is unsuitable for bounce shooting, and a similar warning is issued to the photographer. Is desirable.

In this case, for example, in the case where the photographing screen is in a vertical position composition, a detecting means or the like for detecting that the camera body is in the vertical orientation when taking a picture or the like is provided. An ON signal (or OFF signal) is output to the input port of the control circuit 1, and this ON signal (or OFF signal) is output.
In response to this, the determination step for executing the <display B> subroutine described in FIG. 6 may be inserted.

For outdoor photography, for example, a circuit for detecting the presence or absence of commercial frequency noise in ambient light is newly provided, and this circuit is used for the control circuit 1.
If it is detected that there is no frequency noise in use, a determination step for executing the <display B> routine described with reference to FIG. 6 may be inserted.

[Additional Remarks] (1) In a camera having a shutter having a shutter blade having a diaphragm having a triangular aperture characteristic, and a bounce irradiation device for irradiating an object other than the object and then irradiating the object with the bounce. A camera that determines the light emission timing in consideration of the aperture diameter of the shutter when performing the bounce irradiation, and determines the light emission timing based on at least the object distance by the distance measuring means when not performing the bounce irradiation.

(2) In a camera equipped with a shutter having shutter blades that also serve as a diaphragm having a triangular aperture characteristic,
Flash light emitting means capable of selecting one of a standard irradiation state in which the illumination light is directly emitted to the subject and a bounce irradiation state in which the illumination light is reflected on an object other than the subject and then is emitted to the subject. When the distance measuring means for measuring the distance to the main object and the flash light emitting means are in the standard irradiation state, the light emission timing is determined based on at least the object distance by the distance measuring means, and When in the bounce irradiation state, it is provided with means for determining the light emission timing in consideration of the aperture diameter of the shutter, and light emission control means for controlling the light emission of the flash light emission irradiation means at the determined light emission timing. camera.

(3) In the camera described in Appendix 2,
A camera that determines the amount of light emission in the standard irradiation state according to the aperture value of the aperture / shutter blade at the light emission timing.

(4) In a camera equipped with a shutter having a shutter blade that also serves as a diaphragm that opens and closes an exposure aperture, a standard irradiation position for directly irradiating the illuminating light toward the subject, and reflecting the illuminating light to an object other than the subject. After that, the flash light emitting means that can move to the bounce irradiation position for irradiating the subject, the setting means for setting the flash light emitting means to the standard irradiation position or the bounce irradiation position, and the flash light emitting means. In the case where the standard irradiation position or the bounce irradiation position is detected, the bounce detection means, the distance measuring means for measuring the distance to the main subject, and the flash emission irradiation means are in the standard irradiation position. Determines the light emission timing based on at least the subject distance measured by the distance measuring means. Means for determining the light emission timing in consideration of the opening diameter of the shutter, control means for controlling the light emission of the flash light emission irradiation means at the determined light emission timing, and unsuitable for the bounce irradiation at the bounce irradiation position. A camera that includes: a detection unit that detects whether or not a proper shooting condition is present, and a warning unit that warns a photographer when the detection unit detects an inappropriate shooting condition for the bounce irradiation.

[0135]

As described above, according to the present invention, in a compact camera having a shutter having a shutter blade that also serves as a diaphragm for opening and closing an exposure opening, and a flash light emitting means, a bounce is surely performed by a simple operation. It is possible to provide a camera capable of taking a photograph and easily obtaining a high-quality photograph with better depiction.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing the appearance of a camera according to an embodiment of the present invention, showing a case where a flash light emitting means incorporated in the camera is in a standard irradiation state.

FIG. 2 is a schematic perspective view showing an appearance of a camera according to an embodiment of the present invention, and is a diagram showing a case where a flash light emission irradiation means incorporated in the camera is in a bounce irradiation state.

FIG. 3 is a block diagram showing an internal configuration of the camera shown in FIG.

4 is a block diagram showing an internal configuration of a strobe-related part of the camera shown in FIG.

5 is a diagram simply showing the inside of a viewfinder of the camera of FIG.

6 is a main flowchart showing an operation sequence in the camera shown in FIG.

7 is a flowchart showing a subroutine of <exposure> in the operation sequence of the camera of FIG.

8 is a flowchart showing a <strobe setting> subroutine in the operation sequence of the camera of FIG.

[Explanation of symbols]

1 ... Control circuit (detection means, warning means, determination means) 8 ... Distance measuring circuit (distance measuring means) 17 ... Sector shutter 28 ... Bounce state detection switch (bounce detection means) 32 ... Release button 50 ... … Camera main body 52 …… Finder window 53 …… Metering window (metering means) 55 …… Strobe light measuring window (metering means) 56,57 …… Auto focus (AF) light emitting / receiving window 58 …… Strobe unit (flash light emission) Means) 59 ... Bounce state detection button (bounce detection means) 65 ... Emission control circuit (emission control means) 107 ... Display unit (display means, warning means)

Claims (3)

[Claims] 1. A camera provided with a shutter having a shutter blade that also serves as a diaphragm for opening and closing an exposure opening, wherein a standard irradiation state in which illumination light is directly directed toward an object and an illumination light is reflected to an object other than the object. Flash light emitting means capable of selecting either one of the bounce irradiation state for irradiating the subject afterwards, means for determining an appropriate light emitting timing of the flash light emitting means for opening operation of the shutter, A camera comprising: a light emission control unit that controls light emission by changing a light emission timing of the flash light emission irradiation unit in a standard irradiation state and the bounce irradiation state. 2. A camera provided with a shutter having a shutter blade that also serves as a diaphragm for opening and closing an exposure aperture, wherein a standard irradiation state in which illumination light is directly directed toward an object and an illumination light is reflected to an object other than the object. The flash emission irradiation means capable of selecting one of the bounce irradiation conditions for irradiating the subject after the start, the distance measuring means for measuring the distance to the main subject, and the flash emission irradiation means are in the standard irradiation state. In this case, at least the light emission timing is determined based on the distance to the object by the distance measuring means, and in the bounce irradiation state, the light emission timing is determined in consideration of the aperture diameter of the shutter. A light emission control unit that controls light emission of the flash light emission irradiation unit at the determined light emission timing, and a camera. 3. The camera according to claim 1, wherein the light emission timing in the bounce irradiation state is when the opening diameter of the shutter is in a fully open state.