JPH11212178A - Camera provided with remote control function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a camera provided with a remote control function which does not perform release action even when a release button is inadvertently fully depressed in the case of setting a mode for performing self-timer photographing by remote control operation, and prevents troublesomeness in the case of performing focus lock. SOLUTION: This camera is provided with a remote control mode setting means 16, a remote control signal receiving means 11, and an automatic focusing adjustment device 19. It possesses a half depressing switch (1st switch) 44 turned on at the 1st stroke of the release button and a release switch (2nd switch) 15 turned on at the 2nd stroke of the release button. When the 1st switch is turned on by operating the release button in the midst of setting a remote control mode by the means 16, the device 19 is actuated and also its focusing state is held. When the 2nd switch is turned on by operating the release button, film exposure is inhibited and the focusing state is held.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless remote controller (radio remote controller; hereinafter simply referred to as a remote controller) for irradiating a light control signal such as infrared light.
The present invention relates to a camera with a remote control function for taking a commemorative photograph or a close-up photograph using a wireless remote controller.

[0002]

2. Description of the Related Art For example, in a compact still camera, remote control photographing (remote control photographing; hereinafter, referred to as remote control photographing) is performed by a cable using a dedicated remote control photographing cable (cable release, wire release). Although there were many formulas, recently, so-called wireless remote controllers using infrared light have been increasing.

The principle is that a remote controller which is a remote controller emits modulated infrared light, and a light receiving circuit receives a light signal based on the infrared light through a light receiving window provided in a camera body. Perform the operation. In the case of photographing using such a wireless remote controller, the above-described wired method has an advantage in that the cable length limits the operable distance, but operation from a long distance is possible. . Further, in the conventional self-timer photographing using the self-timer, the photographing timing is restricted by the set time, but the photographing can be performed at any time by using the wireless remote controller.

[0004] In addition to the above-mentioned self-timer shooting, remote control shooting using such a remote control may be used for close-up shooting, for example. In this case, it is possible to prevent mechanical vibration during operation from being transmitted to the camera main body, as compared with the case where the above-described remote control photographing cable is used, and it is possible to prevent the so-called camera shake from occurring.

[0005] Even in a camera with a remote control function (remote control function) as described above, auto-focus driving and focus holding (focus lock) are normally performed in accordance with the half-press operation of the release button, and the release is performed by fully pressing the release button. It was configured to perform the operation. Conventionally, even when the remote control mode (remote control mode) is set by the remote control setting means (remote control setting means), the release operation can be performed by fully pressing the release button. Focus lock by this half-press operation
In the remote control mode described above, this is convenient when changing the composition in the viewfinder field of view.

[0006]

However, the release button of the camera has a first stroke for turning on a half-press switch in response to a half-press operation and a second stroke for turning on a release switch in response to a full-press operation. Because the difference is small, the release button may be fully pressed even when the focus is to be locked when the remote control mode is set, and the release operation may be performed.

In addition, when performing close-up photographing of a flower or the like as remote control photographing, it may be difficult to install the camera just below the ground and look into the viewfinder. Further, in order to lock the focus in such a case, it is necessary to stop the finger of the release button at the position of the first stroke. However, such a delicate operation is complicated and puts a considerable burden on the photographer.

The present invention has been made in view of such circumstances. In setting a mode in which self-timer shooting is performed by operating a remote controller, the release operation is not performed even if the release button is pressed inadvertently and fully. An object of the present invention is to provide a camera with a remote control function that can prevent complexity when performing focus lock.

[0009]

In order to meet such a purpose, a camera with a remote control function according to the present invention comprises a first switch for starting a photographing preparation operation and a second switch for starting an exposure operation. Receiving means for receiving a remote control signal (remote control signal); and mode setting means capable of setting a remote control mode (remote control mode) for performing a release operation in accordance with the remote control signal. During the operation, the photographing preparation operation is performed by the operation of the first switch and the result of the photographing preparation operation is held, and the exposure operation is prohibited by the operation of the second switch to hold the result of the photographing preparation operation. It is provided with a continuous control means.

A camera with a remote control function according to the present invention comprises: a main switch for turning on / off power supply to an internal circuit of the camera; and a time counting means for counting an elapsed time after setting the remote control mode. The control means further comprises: when the power supply is turned off by the main switch, when the mode setting means is operated again, and when the elapsed time exceeds a predetermined time before receiving the remote control signal. In any one of the cases, at least one of the holding of the result of the shooting preparation operation and the setting of the remote control mode is released.

Further, in the camera with a remote control function according to the present invention, when the remote control mode is set and the remote control signal is received before the operation of the second switch, the photographing preparation operation and the exposure operation are performed. Are sequentially performed. Further, the camera with a remote control function according to the present invention is configured to start the exposure operation when the remote control signal is received after prohibiting the exposure operation and continuing to hold the result of the shooting preparation operation. . Further, the camera with a remote control function according to the present invention includes an automatic exposure control device, and the exposure value determined by the automatic exposure control device is determined by either the operation of the first switch or the operation of the second switch. It is configured to be performed by.

According to the present invention, when the remote control self-timer mode is set, an attempt is made to press the first switch (for example, a half-press switch that is the first stroke of the release button) in an attempt to lock the focus. Even if the switch is pushed down to the second switch (for example, the second stroke of the release button), no release operation is performed, and no exposure is performed.

Further, according to the present invention, for example, even if the release button is pushed to the second stroke and the second switch is operated, the focus lock state can be maintained by operating the first switch.

Further, according to the present invention, when the remote control mode is set, the auto focus (A) is performed by a control signal from the remote control without operating a switch such as a release button.
F), automatic exposure (AE), release operation, auto-focus and focus lock by half-pressing the release button (operation of the first switch), full-pressing operation (operation of the second switch) ), The focus lock state is maintained and the release is prohibited, and the release operation can be performed by operating the remote controller thereafter.

The first switch is, for example, a half-press switch which is turned on by a first stroke operation of a release button.
The second switch is, for example, a full-press switch that is turned on by a second stroke operation of the release button, but is not limited to this, and may use a separate switch.

[0016]

1 to 5 show one embodiment of a camera having a remote control function according to the present invention. FIG. 5 is a perspective view showing a still camera having a remote control function (remote control function) as described later. The still camera 1 includes a lens barrel 3 having a photographing lens 3a in the center of the front part of the camera body 2, a grip 4 near one side of the front part of the camera body 2, and a grip 4
And a release button 6 at the upper end of the camera body 2.

Further, a light receiving window 8 as a signal receiving portion for receiving a light signal (remote control signal) from a remote controller 7 for emitting a light signal such as infrared light is provided above the front portion of the camera body 2. A self-timer lamp 9 that flashes or emits light during timer shooting is provided. The light receiving window 8 is formed as a transparent window through which an optical signal from the remote controller 7 is transmitted.

Such a still camera 1 has a light receiving element (described later) provided inside a camera body 2 through a light receiving window 8 by applying a signal (light signal) emitted from a remote controller 7 for emitting a light signal such as infrared light. 11 (see FIG. 1). When the light receiving element 11 receives the optical signal from the remote controller 7, the same exposure operation (shooting operation) as when the release button 6 is pressed by a microcomputer (not shown) is executed. For example, when performing self-timer shooting or the like, the camera 1 may be set up on a tripod or the like, and the remote controller 7 may be operated from the front of the camera 1. When performing close-up photography or the like, the remote controller 7 may be operated from the side of the camera 1 toward the light receiving window 8.

FIG. 1 is a circuit block diagram of a camera with a remote control function according to the present invention. In FIG. 1, an MCU (microcomputer) 10 for controlling a photographing operation in the camera is provided in the camera. As described above, the light receiving element 11 for receiving an optical signal from the remote controller 7 (see FIG. 4) held by the photographer is connected to the MCU 10 to receive the optical signal (remote control signal) and output the output. Notify MCU10.

A lamp 12 is connected to the MCU 10 to irradiate pattern light to the object when the object has a low luminance, and is used as AF auxiliary light for assisting a focusing operation of an automatic focusing device 19 described later. . The lighting of the lamp 12 is performed by the transistor 13, and this control is performed by the MCU 10.

A half-press switch 14 as a first switch is connected to the MCU 10. When the release button 6 is turned on by a first stroke (half-press operation), an automatic exposure device 18 and an automatic focus adjustment device described later are provided. It functions as a switch for starting a photographing preparation operation such as the start of a detection operation by 19. The MCU 10 is provided with a release switch 15 as a second switch, and functions as a switch that starts an exposure operation when the release button 6 is turned on by a second stroke (full press operation) of the release button 6.

A remote control mode switch 16 as remote control mode setting means is connected to the MCU 10. As apparent from the mode setting determination program shown in FIG. 3, a normal photographing mode, a self-timer mode, and a remote control self-timer mode ( It functions as a switch that can set a remote control self-timer mode) and a remote control release mode (self-timer mode by remote control).

Here, the remote control self-timer mode is a mode in which a self-timer function is used to start timekeeping in response to a remote control signal by a remote control operation, and to perform a release operation (shutter opening / closing control) after a predetermined time has elapsed.
The remote control release mode is a mode in which, for example, when a remote controller for remote operation is operated, a release operation (shutter opening / closing control) is immediately performed according to an optical signal. The self-timer mode is a mode in which a release operation is performed after a predetermined time using a self-timer mechanism (not shown) on the camera body 2 side.

The MCU 10 has an automatic exposure device 1 for measuring the brightness of a subject and transmitting photometric information to the MCU 10.
The exposure information is obtained in the MCU 10 based on the photometric information. The MCU 10 is connected to an automatic focus adjustment device 19 that detects focus adjustment information of the photographing lens 3a for the subject or distance information to the subject and transmits the information to the MCU 10 based on the focus adjustment information or the distance information. The drive of the photographing lens 3a is controlled. An aperture control device 20 is connected to the MCU 10, and controls the aperture of the photographing lens 3a by a control signal based on exposure information from the MCU 10. A shutter control device 21 is connected to the MCU 10 and controls opening and closing of a shutter (not shown) by a control signal based on exposure information from the MCU 10.

A feed control device 22 is connected to the MCU 10, and feeds a film in accordance with a control signal relating to film feed from the MCU 10. A display device 23 is connected to the MCU 10. The display device 23 is a liquid crystal display device that displays a mode set by the remote control mode switch 7, a control aperture value, and a shutter speed, and is driven by the MCU 10.

An automatic focus setting switch 24 is connected to the MCU 10. This setting switch 24
When the low level is closed, the manual focus (M
F), it is determined whether or not the subject is in focus based on the detection result of the automatic focusing device 19, and the MCU 1
0 is displayed on the display device 23 (focus aid). On the other hand, when the setting switch 24 is opened, auto focus (AF) is performed, and the automatic focus adjustment device 19 is turned on.
Performs a lens drive based on the detection result and automatically adjusts the focus to the subject.

FIGS. 2, 3 and 4 are flowcharts showing the operation of the camera with a remote control function according to the present invention. The operation will be described below based on these flowcharts. First, when the camera 1 is brought into a photographable state by a main switch (main SW) (not shown) provided in a part of the camera body 2, in S100 in FIG.
After the mode setting is determined by the mode setting indicated by (see FIG. 3 described later), the operation is started from step S1.

In step S1, the mode set by the remote control mode switch 16 is identified.
That is, it is determined whether the mode is the remote control mode (remote control self-timer mode or remote control release mode) or the other mode (normal photographing mode or self-timer mode). If the mode is the remote control mode, the process proceeds to step S2. If the mode is not the remote control mode, the process proceeds to step S21.

In step S2, a timer for measuring 60 seconds is started, and the process proceeds to step S3. That is, when the remote control mode is set, a timer for maintaining the energized state by a normal half-press operation in order to allow the photographer to reach the subject position away from the camera and to take time to consider the composition and the like. Longer than 8 seconds. Of course, the first standby time of the timer in the remote control mode is not limited to 60 seconds. This time should be a time that satisfies the time necessary for the photographer to consider the composition and the like as described above, and that can prevent the battery from being consumed when the power is forgotten to be turned off after the photographing is completed.

However, during this timer, the MCU 10 is in the activated state, and the current consumption is very large as compared with the slave state when the timer is off (step S33).
If the length is longer than necessary, the number of shots that can be taken with a battery is reduced. Therefore, the standby time of the timer for maintaining the energized state by the second or more half-press operation after the single shot with the remote controller 7 is set to a time shorter than the above-described 60 seconds, here, 20 seconds (step S20). In addition, power consumption due to forgetting to turn off the power is reduced.

In step S3, it is checked whether or not an optical signal (remote control signal) from the remote controller 7 has been received by the light receiving element 11. If the remote control signal has been received, the process proceeds to step S4, where the remote control signal is received. If not, the process proceeds to step S22. In step S4, it is determined whether or not a so-called focus lock is set to lock the photographing lens 3a at a focus position or the like. If the focus lock is set, AF (auto focus) is not performed. Proceed to step S34. If the focus lock has not been set, the process proceeds to step S5.

In step S5, it is determined which of AF and MF (manual focus) is set by the auto focus setting switch 24, and if it is set to MF (Low level), AF is not performed. The process proceeds to step S34. If it is not set to MF,
Proceed to step S6. In step S6, the brightness of the subject is measured by the automatic exposure device 18, the distance to the subject is measured by the automatic focus adjustment device 19, and the focal length of the photographing lens 3a is adjusted based on the measurement result.
The object image is focused on the film surface and the focal plane of the viewfinder, and the process proceeds to step S7.

In step S7, the automatic focusing device 19
It is determined whether or not the focus cannot be detected. If the focus cannot be detected, the process proceeds to step S28. If the focus can be detected, the process proceeds to step S8. In step S8, it is determined whether or not the remote control release mode is set. If the remote control release mode is set, the process proceeds to step S9. If the remote control release mode is different (that is, if the remote control self-timer mode is set), the process proceeds to step S30.

In step S9, the remote control release mode flag REM1 is set, and the flow advances to step S10. In step S10, in the case of a single-lens reflex camera, a quick return mirror (not shown) is mirrored up before proceeding to step S11. In step S11, the MCU 10
The shutter opening / closing control is performed on the basis of the shutter time calculated in the above, and the process proceeds to step S12. In step S12, the mirror of the quick return mirror is lowered and the shutter is charged, and the process proceeds to step S13.

In step S13, it is determined whether or not the remote control release mode flag REM1 is set. If it is in the remote control release mode, the flow advances to step S14 to display the end of photographing. If the mode is not the remote control release mode, the shooting end display is not performed, and the process proceeds to step S17.

Here, in step S14 described above, the lamp 12 serving as auxiliary light is turned on to notify the photographer that the photographing has been completed, and the flow proceeds to step S15. In step S15, wait for 2 seconds so that the photographer knows that the lamp 12 has been turned on for 2 seconds, and then proceed to step S16. In step S16, the lamp 12 is turned off, and the process proceeds to step S17.

In step S17, the remote control release mode flag REM1 is reset, and the flow advances to step S18. In step S18, the film feed control device 2
2 is operated to feed one film at a time, and step S19 is performed.
Proceed to.

In step S19, the timer for maintaining the energized state is reset, and the flow advances to step S20. Step S
At 20, the next timer time is set to a time shorter than the above-described 60 seconds, for example, 20 seconds, and the timer is started, and the process proceeds to step S3. In step S21, for example, a timer for measuring 8 seconds is started as a timer for maintaining the energized state by the half-press operation in a mode other than the remote control mode, and the process proceeds to a sequence other than the remote control mode. Here, illustration and description of flowcharts in modes other than the remote control mode (normal shooting mode, self-timer mode) are omitted.

In step S22, it is confirmed whether or not the remote control mode switch 16 has been operated, and if it has been operated, the flow proceeds to FIG. If no operation has been performed, the process proceeds to step S23. In step S23, it is determined whether or not the half-press switch 14 has been turned on by operating the release button 6. If the switch has been turned on, the process proceeds to step S24. If the switch remains off, the process proceeds to step S27. Step S2
In step 4, automatic exposure and automatic focus adjustment of the subject are performed in the same manner as in step S6 described above, and the flow advances to step S25.

In step S25, since the release button 6 is half-pressed during the remote control mode, even if a remote control signal is received, focus adjustment to the subject is not performed (steps S5, S6, and S7 are skipped). During the remote control mode, the release button 6 is half-pressed again, or the current (step S24) focus adjustment state is maintained until the timer ends, and the process proceeds to step S26. Step S
At 26, it is determined whether or not the release switch 15 has been turned on by fully pressing the release button 6. If it has not been turned on, the process returns to step S3. If it has been turned on, the process returns to step S3. The normal shooting operation (release sequence operation) by the release switch 15 is prohibited.

In step S27, it is determined whether or not the main switch has been operated. If the main switch has been operated, the process proceeds to step S29, and if not, the process proceeds to step S28. In step S28, it is checked whether or not the timer for maintaining the energized state by the half-press operation has expired. If the timer has not ended, the process returns to step S3, and if it has, the process proceeds to step S29. In step S29, the focus lock is released, and the process proceeds to step S33. In step S33,
This flow is ended by setting the MCU 10 in the slave state so that the current consumption is reduced from the start state, and the MCU 10 is in a standby state until the next start operation.

In step S30, the auxiliary light lamp 12 is turned on to indicate that the camera is in a state immediately before shooting in the remote control self-timer mode, and the flow advances to step S31. In step S31, the process waits for 2 seconds so that the photographer knows that the lamp 12 has been turned on for 2 seconds, and then proceeds to step S32. In step S32, the lamp 12 is turned off, and the process proceeds to step S10.

Next, a flowchart for determining the mode setting in S100 when the remote control mode switch 16 is operated in step S22 will be described with reference to FIG. In step S101, the remote control mode switch 1
It is checked whether or not No. 6 has been turned on. If it has been turned on, the process proceeds to step S102, and if not, the process returns to the main routine of FIG.

In step S102, it is determined whether or not the mode is the normal shooting mode. If the mode is the normal shooting mode, the process proceeds to step S103. If the mode is not the normal shooting mode, the process proceeds to step S104. In step S103, the self-timer mode is set, and the display device 23 displays that the self-timer mode is set, and then returns to the main routine of FIG.

In step S104, it is determined whether or not the mode is the self-timer mode. If the mode is the self-timer mode, the process proceeds to step S105. If the mode is not the self-timer mode, the process proceeds to step S106. In step S105, the remote control self-timer mode is set, and the display device 23 displays that the remote control self-timer mode is set, and then returns to the main routine of FIG. Step S
At 106, it is determined whether or not the mode is the remote control self-timer mode. If the mode is the remote control self-timer mode, the process proceeds to step S107; otherwise, the process proceeds to step S108.

In step S107, the remote control release mode is set, the display 23 indicates that the remote control release mode is set, and the process returns to the main routine of FIG. In step S108, the mode is set to the normal mode, and the display device 23 displays that the mode is the normal mode, and then returns to the main routine of FIG. 2 described above. That is, according to the flowchart of FIG. 3 described above, the four modes of the normal shooting mode, the self-timer mode, the remote control self-timer mode, and the remote control release mode can be sequentially set.

Next, when the remote control mode switch is operated in step 22 and the mode setting is operated again, the flow advances to the flowchart of FIG. 4, and in step S51, the focus lock in step S25 described above is released. After setting the normal mode in S52, the process returns to step S1 in FIG.

Next, a description will be given of a release operation when the auto-focus mode is set and the remote control self-timer mode is set.

That is, since the remote control self-timer mode has been set, the flow advances from step S1 to S3 to determine whether a remote control signal has been received. Until the remote control signal is input, S3 → S22 → S23 → S
A timer for measuring 60 seconds in a loop of 27 → S28 → S3 enters a standby state for 60 seconds. Here, this 60
If the release button 6 is pressed halfway during the standby state for two seconds, the focus is locked in a loop of S23 → S24 → S25 → S26 → S3. If, by mistake, the release button 6 is fully pressed and the release switch 15 is turned on,
As is apparent from step S26, without releasing,
The focus remains locked.

When the remote control self-timer mode is set as described above, the focus is locked when the half-press switch 14 is turned on by the half-press operation because the focus is locked depending on whether or not there is a main subject in the composition. Is different. In particular, it is more convenient to let the photographer arbitrarily select this time.

If a remote control signal is input within 60 seconds after the self-timer mode is set, the process proceeds to S4 and thereafter. Here, if the half-press switch 14 is not turned on after the remote control self-timer mode is set, the focus is not locked, and the process proceeds from step S4 to S5. Since the auto focus is set, S6 → S7 → S8 → S30 → S31 →
Proceeding to S32, the photographer is notified of the state before the release operation by displaying it. Then, S10 → S11 → S1
After exposing the film in the order of 2 → S13 → S17 → S18 → S18, winding up one frame, further proceeding to S19 → S20,
From the next time, a timer for maintaining the energized state by the half-press operation is set to be shorter than 60 seconds, for example, 20 seconds, and then the process returns to step S3. In this case, in the next remote control shooting, after the auto focus is again performed and the focus is achieved, the release is performed after the display indicating that the state is in the state before the release operation for 2 seconds is finished.

On the other hand, if the half-press switch 14 is turned on after the remote control self-timer mode is set, the focus is locked, so that step S4
To S34, and after performing the automatic exposure, S8 → S30 →
Proceed to S31 → S32 to display and notify that the photographer is in the state before the shutter release operation, and S10 → S11 → S12.
→ S13 → S17 → S18 The film is exposed and wound up by one frame. Further, the process proceeds to S19 → S20, and the timer time for maintaining the energized state by the half-press operation is set to 20 seconds shorter than the next time, and then to step S3. Return. In this case, the focus is locked by the half-press operation, and the next remote control shooting is also performed with the same focal length.

Further, the release operation when the auto focus mode is set and the remote control release mode is set will be described. Since the remote control self-timer mode has been set, the process proceeds from S1 to S3 to determine whether a remote control signal has been received. Until the remote control signal is input, S3 → S22 → S23 → S
In a loop of 27 → S28 → S3, a standby state is set for 60 seconds.

Here, when the release button 6 is half-pressed during the 60-second standby state, the half-press switch 14 is pressed.
Is turned on, and focus is locked in a loop of S23 → S24 → S25 → S26 → S3. Even when the remote control release mode is set, the focus is locked when the half-press switch 14 is turned on by the half-press operation as described above, similarly to the setting of the remote control self-timer mode described above. When the focus lock timing differs depending on whether or not there is a main subject inside, the photographer can be arbitrarily selected.

If a remote control signal is input within 60 seconds after the remote control self-timer mode is set, the process proceeds to S4 and thereafter. If the half-press switch 14 is not turned on after the setting of the remote control mode, the focus is not locked, so the process proceeds from step S4 to S5,
Since auto focus is set, S6 → S
Go to 7 → S8 → S9 → S10 → S11 to shorten the time lag from the reception of the remote control signal to the release, and after the exposure is completed, go to S12 → S13 → S14 → S15 → S16 to inform the photographer that the shooting is completed. The lamp 3 is turned on to notify. Then, the film is wound up by one frame from S17 to S18, and further proceeds to S19 to S20, and the timer time for maintaining the energized state by the half-press operation is set to be shorter than 20 seconds from the next time, and the process returns to step S3. In this case, in the next remote control shooting, autofocus is performed again, and after focusing, the shutter is released with a small time lag.

On the other hand, when the half-press switch 14 is turned on by pressing the release button 6 halfway after the remote control release mode is set to lock the focus and the focus is locked, the flow advances from step S4 to S34 to perform automatic exposure. After performing S8 → S9 → S10 → S11
To shorten the time lag from the reception of the remote control signal to the release, and after the exposure is completed, S12 → S13 → S
The process proceeds from S14 to S15 to S16, and the lamp 12 is turned on to notify the photographer that the photographing is completed. And S
17 → S18 and roll up the film by one frame.
→ Proceed to S20, set the timer time for maintaining the energized state by the half-press operation to 20 seconds shorter than the next time, and then return to step S3. In this case, the focus is locked by the half-press operation, and the next remote control shooting is performed in the same focus adjustment state.

The present invention is not limited to the structure described in the above embodiment, and it goes without saying that the shape, structure, etc. of each part can be appropriately modified or changed. For example, in the above-described embodiment, a case has been described in which an optical signal is used as a control signal transmitted from the remote controller 7 to the camera 1 side. However, the present invention is not limited to this, and it is not limited thereto. Control signal may be used. At this time, camera 1
It is a matter of course that the light receiving section on the side also uses a receiving means (receiver) capable of receiving radio waves and sound waves (ultrasonic waves).

[0058]

As described above, according to the camera with the remote control function according to the present invention, when the remote control self-timer mode is set, the first switch (for example, the release button Attempting to turn on the half-press switch which is the first stroke, the second switch (the second release button
Even if the release switch is pressed to the stroke and the release switch is turned on, no release operation is performed, so no exposure is performed.
There is an advantage that the film is not wasted.

Further, according to the present invention, the release button is
The focus lock state can be maintained even when the stroke is pressed, so that the focus can be locked easily by pressing the release button even in a place where it is difficult to operate the camera.

Further, according to the present invention, when the remote control mode is set, the autofocus (A) is performed by the control signal from the remote controller without operating the release button.
F), enable automatic exposure (AE), release operation, perform autofocus and focus lock by operating the first switch (half-pressing the release button), and operate the second switch (full-press operation) However, by maintaining the focus lock state and prohibiting the release and performing a release operation by a remote control operation thereafter, the degree of freedom in photographing for the photographer can be increased. The automatic exposure (AE) may be performed when the release button is half-pressed or fully pressed.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram showing one embodiment of a camera with a remote control function according to the present invention.

FIG. 2 is a flowchart showing one embodiment of a camera with a remote control function according to the present invention.

FIG. 3 is a flowchart illustrating steps for determining a mode setting in S100 of FIG. 2;

FIG. 4 is a flowchart when a remote control mode switch is operated in step S22 in FIG. 2;

FIG. 5 is a perspective view for explaining an outline of a camera with a remote control function to which the present invention is applied.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Camera, 2 ... Camera main body, 3 ... Lens barrel, 6 ... Release button, 7 ... Remote control (remote operation device, remote control transmitter), 8 ... Remote control signal receiving window, 10 ... Microcomputer (MCU) , 11: light receiving element, 12: lamp (auxiliary light), 14: half-press switch (first switch), 15: release switch (second switch)
Switch), 16 ... remote control mode switch, 18 ...
Automatic exposure device, 19: automatic focus adjustment device, 20: aperture control device, 21: shutter control device, 22: feed control device, 23: display device, 24: auto focus setting switch.

Claims (5)

[Claims] 1. A first switch for starting a photographing preparation operation, a second switch for starting an exposure operation, receiving means for receiving a remote control signal, and a remote for performing a release operation in response to the remote control signal A camera having a remote control function, comprising: a mode setting unit capable of setting a control mode, wherein the first control mode is set during the setting of the remote control mode.
Control means for performing a photographing preparation operation by operating the switch and holding a result of the photographing preparation operation, prohibiting the exposure operation by operating the second switch, and continuing to hold the result of the photographing preparation operation. A camera with a remote control function. 2. The camera with a remote control function according to claim 1, wherein a main switch for turning on and off power supply to an internal circuit of the camera, and a timer for counting an elapsed time after setting the remote control mode. Means, when the power supply is turned off by the main switch, when the mode setting means is operated again,
And canceling at least one of the holding of the result of the shooting preparation operation and the setting of the remote control mode when the elapsed time exceeds a predetermined time before receiving the remote control signal. A camera with a remote control function. 3. The camera with a remote control function according to claim 1, wherein the remote control mode is set and the second control mode is set.
A camera having a remote control function, wherein when the remote control signal is received before the switch is operated, the photographing preparation operation and the exposure operation are sequentially performed. 4. The camera with a remote control function according to claim 1, wherein the exposure operation is prohibited and the result of the photographing preparation operation is maintained, and then the remote control signal is output. A camera with a remote control function, wherein the exposure operation is started when the camera is received. 5. The camera with a remote control function according to claim 3, further comprising an automatic exposure control device, wherein the control value is determined by the automatic exposure control device.
A camera with a remote control function, characterized in that the camera is configured to be operated by one of the operation of the switch and the operation of the second switch.