JP5495761B2 - Imaging apparatus, control method thereof, and program - Google Patents

Description

  The present invention relates to an imaging apparatus such as a digital camera that captures and reproduces still images and moving images, a control method thereof, and a program.

  Conventionally, in an imaging apparatus such as a digital camera, the lens barrel is extended from the apparatus main body in the photographing mode, an image is taken through an imaging lens disposed in the lens barrel, and the lens barrel is retracted into the apparatus main body when the power is turned off. Some have Such a lens barrel insertion / removal function is employed in many imaging apparatuses as one of methods for improving the portability of the imaging apparatus.

  In addition, in the case of a digital camera, in particular, in the imaging apparatus, the lens barrel is retracted into the apparatus main body in a reproduction mode for reproducing an image in addition to the function as the imaging apparatus.

  For example, Patent Document 1 discloses a configuration in which the collapsing operation is not performed for a predetermined time even when the shooting mode is switched to a non-shooting mode such as a playback mode. Thereby, it is possible to reduce the time until the photographing becomes possible when the mode is switched again to the photographing mode, and it is possible to avoid unnecessary battery consumption.

  For example, in Patent Document 2, at the end of the photographing mode, whether or not the position of the lens barrel is in the retracted state is stored in the nonvolatile memory, the contents of the nonvolatile memory are read at the time of activation, and activation corresponding to the contents is performed. A configuration to perform is disclosed. As a result, it is possible to shorten the start-up time such as playback start-up and avoid unnecessary battery consumption.

JP 2001-69399 A JP 2001-326839 A

  However, in the conventional imaging device, when the imaging device cannot be started due to damage to the lens barrel or the like, the function of the non-photographing mode (playback mode / PC connection mode / printer connection mode, etc.) cannot be used. It was. Further, when there is captured image data stored in a memory arranged inside the imaging apparatus, there is a possibility that the data cannot be extracted.

  Further, if the motor is continued to move more than necessary while the lens barrel is inoperable, the failure state may be deteriorated.

  The present invention has been made in view of the above points, and enables the function of the non-shooting mode to be used even when the imaging apparatus cannot be started due to damage to the lens barrel or the like. The purpose is to prevent deterioration.

The imaging apparatus of the present invention is an imaging apparatus having a shooting mode for shooting and a playback mode for playing back and displaying a recorded image, the detecting means for detecting an abnormality in driving of the lens barrel , a storage means for storing information on whether an abnormality is detected by the detecting means, at the time when the detected information is stored abnormality before term memory unit, when activated in the playback mode, the In addition to invalidating the action of driving of the lens barrel, and control means for controlling the action of driving of the lens barrel when activated in the photographing mode .

  According to the present invention, it is possible to use the function of the non-photographing mode and prevent deterioration of the failure state even when the imaging apparatus cannot be started due to damage to the lens barrel.

It is a block diagram which shows schematic structure of the digital camera which concerns on embodiment. It is a block diagram which shows the hardware constitutions of a zoom control part and a ranging control part. It is a figure explaining an encoder. It is a flowchart which shows the drawing-out process of a lens barrel. It is a flowchart which shows the lens barrel retracting process. It is a flowchart which shows the starting process at the time of power-on. It is a flowchart which shows the mode change process from reproduction | regeneration mode to imaging | photography mode.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a block diagram illustrating a schematic configuration of a digital camera 100 that is an imaging apparatus according to the present embodiment. In the lens barrel 101, a zoom lens 102, a focus lens 103, a photographing lens such as an anti-vibration lens 104, and an aperture shutter 105 are arranged. The zoom lens 102 changes the angle of view by adjusting the focal length. The focus lens 103 adjusts the focus. The anti-vibration lens 104 corrects camera shake. The aperture shutter 105 realizes an exposure function by adjusting the amount of light.

  Light that has passed through the lens barrel 101 that constitutes the imaging optical system is received by an imaging element 106 such as a CCD or CMOS, and converted from an optical signal to an electrical signal. This signal is input to the image processing circuit 107, subjected to pixel interpolation processing and color conversion processing, and transferred as image data to an image memory 108 constituted by DRAM, SRAM, or the like.

  The display unit 109 includes a TFT_LCD (Thin Film Transistor Driven Liquid Crystal Display) or the like, and displays specific information (for example, shooting information) and the like along with display of image data obtained by shooting.

  The system control unit 114 is configured by an arithmetic device such as a CPU, and sends a control command to peripheral devices in accordance with user operations. The system control unit 114 controls the exposure control unit 110, the image stabilization control unit 111, the distance measurement control unit 112, and the zoom control unit 113 in accordance with operations performed from the operation unit 115.

  The exposure control unit 110 calculates an exposure value (aperture value and shutter speed) based on luminance information obtained by image processing in the image processing circuit 107, and controls driving of the aperture shutter 105 based on the calculation result. . Thereby, AE (automatic exposure) control is performed. The image stabilization control unit 111 calculates the shake amount of the digital camera 100 based on information from an angular velocity sensor such as a gyro sensor, and controls the image stabilization lens 104 so as to cancel the shake. The distance measurement control unit 112 controls driving of the focus lens 103 based on focus adjustment information (contrast detection value) of the photographing optical system obtained by image processing in the image processing circuit 107. Thereby, AF (autofocus) control is performed. The zoom control unit 113 controls the zoom lens 102 by calculating a driving speed and a driving direction based on an operation amount and an operation direction of an operation switch (zoom lever or zoom button) for instructing zooming in the operation unit 115. .

  Image data generated in the shooting operation is stored in an external recording medium such as a memory card controlled by the recording unit 117 via an interface (I / F) 116 and a nonvolatile memory 118 built in the digital camera 100. Recorded in either or both. The memory 118 functions as a storage unit that stores information such as camera setting information and an error flag of the lens barrel 101 described later in addition to the image data.

  The connection unit 119 is a communication connection unit for connecting to an external device via USB or the like. The image data recorded in the memory 118 can be transferred to an external storage device such as a personal computer (PC) or a printer via the connection unit 119.

  FIG. 2 is a block diagram illustrating a hardware configuration of the zoom control unit 113 and the distance measurement control unit 112. In this embodiment, an example is shown in which the zoom lens 102 is driven by a DC motor and the focus lens 103 is driven by a stepping motor.

  With reference to FIG. 2A, the zoom control unit 113 that drives the zoom lens 102 will be described. First, a method for detecting the position and speed of the zoom lens 102 will be described. A pulse plate 300 as shown in FIG. 3 is arranged on the motor shaft of the DC motor 204 or on the gear shaft of a gear for transmitting power from the DC motor 204. In the pulse plate 300, slits 301 are arranged at equal intervals on the circumference.

  The encoder 205 includes a light emitting unit 205a configured by a light emitting diode or the like and a light receiving unit 205b configured by a phototransistor or the like (the two are collectively referred to as a photo interrupter). The light emitting unit 205a and the light receiving unit 205b are arranged so as to sandwich the pulse plate 300. Thereby, when the position of the slit 301 becomes a position where the light emitted from the light emitting unit 205a is transmitted, the light receiving unit 205b receives the transmitted light and a current flows. On the other hand, when the position of the slit 301 is a position where the light emitted from the light emitting unit 205a is blocked, no current flows through the light receiving unit 205b. When the pulse plate 300 continues to rotate, the light receiving unit 205b outputs a sine wave or pulse signal (if the rotation speed is high with respect to the current switching, the sine wave form and the rotation speed are slow. In some cases it will be pulsed). This signal is binarized by the comparator 206 to form a pulse waveform and counted by the pulse counter 207.

  Further, two photo interrupters are arranged at positions where the phase of the pulse waveform is shifted by 90 °, and the rotation direction can be calculated by measuring the rising and falling order of the two signals. The pulse waveform counting method will be described with the two signals as A phase and B phase, L when the voltage is 0V and H when the voltage is the reference voltage of the comparator 206, respectively. When changing from (A / B) = (L / L) to (L / L) → (H / L) → (H / H) → (L / H) → (L / L) →. Is the detection direction of the forward rotation direction. At this time, when rotating in the reverse direction, the phase change is reversed as (L / L) → (L / H) → (H / H) → (H / L) → (L / L) →. The relative pulse position can be measured by increasing or decreasing the count value based on the phase change. Furthermore, the speed can be calculated by measuring the time between the rise and fall of the pulse.

  In the power-off state of the digital camera 100, it is not known where the zoom lens 102 is in consideration of the fact that the battery is removed during startup and the power is turned off halfway. Therefore, it is necessary to detect a reference position at the time of activation. A reset 208 is a sensor for detecting this reference position. The reset 208 detects the reference position by detecting the position at which the detection flag installed on the rotating barrel of the lens barrel 101 is switched from transmission to shading by one photo interrupter. When the reference position is detected, the absolute pulse position can be measured by rewriting the count value of the pulse counter 207 to a predetermined value via the comparator 209.

  Next, a control method of the DC motor 204 that is a power source of the zoom lens 102 will be described. The position calculator 200 obtains the current pulse position from the pulse counter 207 and calculates the pulse position to be driven in order to drive in the direction instructed by the system control unit 114. Thereby, the rotation direction of the DC motor 204 is determined. In accordance with the rotation direction, the energization direction of the current output from the drive circuit 203 is set. The speed control calculator 201 performs control calculation so that the speed (target speed) instructed from the system control unit 114 is obtained. After energization is started in the direction calculated by the position calculator 200, the PWM duty output from the PWM 202 is changed so that the difference between the speed detected by the pulse counter 207 and the target speed becomes zero. The switching element of the drive circuit 203 is controlled by changing the PWM duty, and the current supplied to the DC motor 204 is controlled. For example, PID control or the like is used as a speed control calculation method for controlling to a constant speed.

  With reference to FIG. 2B, the distance measurement control unit 112 that drives the focus lens 103 will be described. A stepping motor 214 that is a power source of the focus lens 103 is a motor that performs a rotation operation by inputting a two-phase pulse signal or a sine wave signal. In addition, it is possible to change the rotation speed by changing the frequency of the input signal.

  The position calculator 210 sets a phase in the pulse control calculator 211 in order to drive in the direction instructed by the system controller 114. In the pulse control calculator 211, the frequency setting corresponding to the target speed is set in the PWM 212, and the current is supplied from the drive circuit 213 according to the setting from the PWM 212 to drive the stepping motor 214. A stepping motor does not require a position and speed detection circuit like a DC motor, but when a torque exceeding a predetermined value is generated, a so-called step-out phenomenon occurs in which rotation cannot follow the input electric signal.

  Similarly to the zoom lens 102, the focus lens 103 detects the reference position by the reset 215, and when the reference position is detected, the count value of the counter included in the pulse control calculator 211 is rewritten to a predetermined value via the comparator 216. Thus, the absolute pulse position can be measured.

  FIG. 4A is a flowchart showing the feeding process of the lens barrel 101, and FIG. 4B is a flowchart showing the retracting process of the lens barrel 101. These processing operations are realized by the system control unit 114 executing control programs for the feeding process and the collapsing process.

  In the extending process and the retracting process of the lens barrel 101, both the zoom lens 102 and the focus lens 103 move in the optical axis direction. Therefore, there is a risk of collision if the two are driven simultaneously. On the other hand, if each of them is moved alone, it takes time to complete the driving of all the lenses. In particular, in a camera activation process that involves a payout operation, a reduction in processing time is required so as not to miss a photo opportunity.

  Therefore, in the extension process of the lens barrel 101, the activation time is shortened by simultaneously driving the zoom lens 102 and the focus lens 103 so as not to collide with each other. In the present embodiment, the lens barrel 101 is configured such that when the zoom lens 102 is extended to the reference position of the zoom lens 102 detected by the reset 208, the lens barrel 101 does not collide with the focus lens 103. With this configuration, it is possible to reduce the start-up time while detecting the reference position of the zoom lens 102 and simultaneously starting the extension of the focus lens 103 to avoid collision between the lenses. Note that the anti-vibration lens 104 and the aperture shutter 105 do not move in the optical axis direction, and thus do not collide with other lenses.

  With reference to FIG. 4A, the feeding process of the lens barrel 101 will be described. The lens barrel 101 extension process occurs not only when the camera is started but also when the operation mode is changed from the non-shooting mode to the shooting mode. When the feeding of the lens barrel 101 is started, the feeding of the zoom lens 102 arranged as the front group of the lens barrel 101 is first started (step S101).

  Next, reset detection determination of the zoom lens 102 is performed (step S102). If the reset of the zoom lens 102 cannot be detected even after a predetermined time has elapsed (step S103), it is considered that the DC motor 204 cannot be rotated due to a circuit failure of the reset 208 or a failure of the lens barrel 101. Exit.

  If reset of the zoom lens 102 is detected in step S102, it is determined that the distance from the focus lens 103 has moved sufficiently far, and the focus lens 103 starts to be extended (step S104).

  Next, reset detection determination of the focus lens 103 is performed (step S105). If reset of the focus lens 103 cannot be detected even if a predetermined amount of pulses are output (step S106), it is considered an abnormality such as a stepping motor 214 stepping out due to a circuit failure of the reset 215 or failure of the lens barrel 101. If this happens, the payout process is terminated as an error.

  While continuing the extension operation of the zoom lens 102 and the focus lens 103, initial operations of the aperture shutter 105 and the image stabilizing lens 104 are performed (steps S107 and S108). That is, in step S107, the initial position of the aperture shutter 105 is determined, and the aperture shutter 105 is opened to apply light to the image sensor 106. In step S108, in order to smoothly operate a ball member (not shown) that supports the image stabilizing lens 104, a reset operation is performed to rotate the movable range of the image stabilizing lens 104 by 360 °.

  Next, it is determined whether or not the focus lens 103 has been extended (step S109). Since the stepping motor 214 has no means for detecting step-out except for reset detection, the stepping motor 214 determines that feeding has been completed when a predetermined amount of pulses has been output after reset detection.

  Next, it is determined whether or not the zoom lens 102 has been fully extended (step S110). If the zoom lens 102 does not reach the target pulse position even after a predetermined time has elapsed (step S111), it is considered that the DC motor 204 cannot rotate due to a failure of the lens barrel 101, and the feeding process is terminated as an error. If it is determined in step S110 that the zoom lens 102 has reached the extended completion position, the extended process of the lens barrel 101 is completed.

  With reference to FIG. 4B, the retracting process of the lens barrel 101 will be described. The retracting process of the lens barrel 101 occurs when the camera ends and when the operation mode is changed from the shooting mode to the non-shooting mode. The retracting process of the lens barrel 101, which is the initialization of the imaging optical system, is not required to shorten the processing time compared with the extension process, and the zoom lens 102 and the focus lens are surely avoided from colliding with each other. 103 are driven independently. When the retracting of the lens barrel 101 is started, first the retracting of the focus lens 103 arranged as the rear group of the lens barrel 101 is started (step S112).

  Next, reset detection determination of the focus lens 103 is performed (step S113). Similarly to step S106, if the reset of the focus lens 103 cannot be detected even if a predetermined amount of pulses are output (step S114), the retracting process is terminated as an error.

  When the reset of the focus lens 103 is detected in step S113, it is determined whether or not the collapse of the focus lens 103 is completed (step S115). After the retracting of the focus lens 103 is completed, the retracting of the zoom lens 102 is started (step S116).

  Next, reset detection determination of the zoom lens 102 is performed (step S117). As in step S103, if the reset of the zoom lens 102 cannot be detected even after a predetermined time has elapsed (step S118), the retracting process is terminated as an error.

  During the retracting operation of the zoom lens 102, the stop operation of the aperture shutter 105 and the anti-vibration lens 104 is performed (steps S119 and S120). That is, in step S119, the aperture shutter 105 is closed so as not to irradiate the image sensor 106 with light. In step S120, the driving of the anti-vibration lens 104 is stopped.

  Next, it is determined whether or not the zoom lens 102 has been retracted (step S121). If the zoom lens 102 does not reach the target pulse position even after a predetermined time has elapsed (step S122), the retracting process is terminated as an error. If it is determined in step S121 that the zoom lens 102 has reached the retracted completion position, the retracting process of the lens barrel 101 is completed.

  With reference to FIG. 5, the startup process at the time of power-on when the lens barrel 101 which is a problem in the present invention cannot be operated will be described. First, the system control unit 114 determines whether a shooting mode for shooting is selected as an operation mode at the time of activation or a playback mode is selected (step S201). When it is determined in step S201 that the operation mode at the time of activation is the shooting mode, the process proceeds to step S202, and the lens barrel 101 extension process described with reference to FIG. 4A is performed.

  Next, the system control unit 114 determines whether an error has been detected in the lens barrel 101 extension process (step S203). If no error is detected in step S203, the process proceeds to step S204, the value of the bit in the error flag area assigned to the memory 118 is set to 0, and the camera is normally started in the shooting mode.

  If an error is detected in step S203, the process proceeds to step S205, the lens barrel 101 is stopped, the bit value in the error flag area is set to 1 (step S206), and an error message is displayed on the display unit 109. Close the camera.

  On the other hand, when it is determined in step S201 that the operation mode at the time of activation is the reproduction mode, the process proceeds to step S207, and the system control unit 114 determines the retracted state of the lens barrel 101. As a method of determining the retracted state of the lens barrel 101, for example, there is a method of detecting and determining the state of the photo interrupter used for the reset 208 of the zoom lens 102. Also, there is a method of recording that the collapsing is completed in the memory 118 when the collapsing is completed, and determining the collapsed state using the information. When the lens barrel 101 is in the retracted state in step S207, the lens barrel 101 is normally started in the reproduction mode without controlling the lens barrel 101.

  If the lens barrel 101 is not in the retracted state in step S207, the process proceeds to step S208, where it is determined whether the value of the bit in the error flag area is 0 or 1, and the presence / absence of an error in the previous feeding or retracting process is detected. . If the bit value in the error flag area is 1 in step S208, that is, if the previous error has been detected, the action of retracting the lens barrel 101 is invalidated, and the lens barrel 101 is left in the extended state to start reproduction. To do. If the value of the bit in the error flag area is 0 in step S208, that is, if the battery is removed and the lens barrel 101 is finished being extended, the process proceeds to step S209, and the lens barrel 101 described in FIG. 4B is retracted. Process.

  Also in this case, it is determined whether or not an error has been detected in the lens barrel 101 retracting process (step S210). If no error is detected in step S210, the playback mode is normally started. If an error is detected in step S210, the process proceeds to step S211, the lens barrel 101 is stopped, and reproduction is started while the lens barrel 101 is in the extended state. Then, the value of the bit in the error flag area is set to 1 (step S212).

  Next, with reference to FIG. 6, a change process when changing the operation mode from the reproduction mode to the shooting mode when the lens barrel 101 cannot be operated will be described. As described with reference to FIG. 5, according to the present invention, even when the lens barrel 101 cannot be operated, the playback mode can be activated.

  When the operation mode is changed from the playback mode to the shooting mode, the system control unit 114 determines whether the value of the bit in the error flag area is 0 or 1 (step S301), and starts normally when the mode is changed to the playback mode. Whether or not is detected. If the bit value in the error flag area is 1 in step S301, it is highly likely that the lens barrel 101 is damaged, so an error message is displayed on the display unit 109 without moving the lens barrel 101, and the camera. End (turn off the power). If the bit value in the error flag area is 0 in step S301, the process proceeds to step S302, and the lens barrel 101 extension process described with reference to FIG. 4A is performed.

  Similar to the feeding process when the power is turned on, when no error is detected (step S303), the camera is normally started in the shooting mode. When an error is detected (step S303), the process proceeds to step S304, the value of the bit in the error flag area is set to 1, an error message is displayed on the display unit 109, and the camera is terminated.

  5 and 6, the example of the playback mode has been described as the non-photographing mode, but a connection mode with an external device such as a PC connection mode or a printer connection mode may be used.

  By performing the above processing, even when the lens barrel 101 becomes inoperable, image display in the playback mode, transfer of image data recorded in the memory 118 to the PC, image printing, etc. The function can be used. Further, since the lens barrel 101 is not moved as much as possible when the lens barrel 101 becomes inoperable, it is possible to prevent the failure state from deteriorating. Furthermore, by assigning a plurality of bits to the error flag area for each zoom lens 102 and focus lens 103 and displaying error flag information on the display unit 109, it is possible to easily analyze the cause of the failure. Become.

(Other embodiments)
The present invention can also be realized by executing the following processing. That is, software (program) that realizes the functions of the above-described embodiments is supplied to a system or apparatus via a network or various storage media, and a computer (or CPU, MPU, etc.) of the system or apparatus reads the program. It is a process to be executed.

DESCRIPTION OF SYMBOLS 100: Digital camera, 101: Lens barrel, 102: Zoom lens, 103: Focus lens, 104: Anti-vibration lens, 105: Aperture shutter, 106: Image sensor, 107: Image processing circuit, 108: Image memory, 109: Display unit, 110: exposure control unit, 111: image stabilization control unit, 112: distance measurement control unit, 113: zoom control unit, 114: system control unit, 115: operation unit, 116: interface, 117: recording unit, 118 : Memory, 119: Connection part

Claims (9)

An imaging apparatus having a shooting mode for shooting and a playback mode for playing back and displaying recorded images,
Detecting means for detecting an abnormality in driving of the lens barrel ;
Storage means for storing information on whether or not an abnormality is detected by the detection means;
Start at the time when the information detected abnormality before Symbol storage means is stored, said when activated in playback mode, the disable from acting driving of the lens barrel, in the imaging mode In such a case, the image pickup apparatus further comprises control means for controlling the lens barrel to be driven . An imaging apparatus having a shooting mode for shooting and a playback mode for playing back and displaying recorded images,
Detecting means for detecting an abnormality in driving of the lens barrel ;
Storage means for storing information on whether or not an abnormality is detected by the detection means;
When the information that has detected the abnormality is not stored in the storage means, when the reproduction mode is activated , the lens barrel is controlled to operate , and the abnormality is detected by the detection means in the middle. And a control means for stopping and starting the driving of the lens barrel . An imaging apparatus having a shooting mode for shooting and a playback mode for playing back and displaying recorded images,
Detecting means for detecting an abnormality in driving of the lens barrel ;
Storage means for storing information on whether or not an abnormality is detected by the detection means;
In case the information detected an abnormality in the storage means is stored, when said from the playback mode to change the operating mode to the shooting mode, is characterized in that a control means for turning off the power supply of its own Imaging device. An imaging apparatus having a shooting mode for shooting and a playback mode for playing back and displaying recorded images,
Detecting means for detecting an abnormality in driving of the lens barrel ;
A control method for an imaging apparatus, comprising storage means for storing information as to whether or not an abnormality has been detected by the detection means,
Start at the time when the information detected abnormality before Symbol storage means is stored, said when activated in playback mode, the disable from acting driving of the lens barrel, in the imaging mode If so , a method for controlling the imaging apparatus , comprising: a procedure for controlling the lens barrel to be driven . An imaging apparatus having a shooting mode for shooting and a playback mode for playing back and displaying recorded images,
Detecting means for detecting an abnormality in driving of the lens barrel ;
A control method for an imaging apparatus, comprising storage means for storing information as to whether or not an abnormality has been detected by the detection means ,
When the information that has detected the abnormality is not stored in the storage means, when the reproduction mode is activated , the lens barrel is controlled to operate , and the abnormality is detected by the detection means in the middle. In this case, the imaging apparatus control method includes a procedure for stopping and starting the driving of the lens barrel . An imaging apparatus having a shooting mode for shooting and a playback mode for playing back and displaying recorded images,
Detecting means for detecting an abnormality in driving of the lens barrel ;
A control method for an imaging apparatus, comprising storage means for storing information as to whether or not an abnormality has been detected by the detection means,
In case the information detected an abnormality in the storage means is stored, when said from the playback mode to change the operating mode to the shooting mode, the image pickup apparatus characterized by comprising the step of turning off the power supply of its own Control method. A program for controlling an imaging apparatus having a shooting mode for shooting and a playback mode for playing back and displaying recorded images ,
Detecting means for detecting an abnormality in driving of the lens barrel ;
Storage means for storing information on whether or not an abnormality is detected by the detection means;
Start at the time when the information detected abnormality before Symbol storage means is stored, said when activated in playback mode, the disable from acting driving of the lens barrel, in the imaging mode If so, a program for causing a computer to function as control means for controlling the lens barrel to act .
An imaging apparatus comprising: A program for controlling an imaging apparatus having a shooting mode for shooting and a playback mode for playing back and displaying recorded images ,
Detecting means for detecting an abnormality in driving of the lens barrel ;
Storage means for storing information on whether or not an abnormality is detected by the detection means;
When the information that has detected the abnormality is not stored in the storage means, when the reproduction mode is activated , the lens barrel is controlled to operate , and the abnormality is detected by the detection means in the middle. If so, a program for causing the computer to function as control means for stopping and starting the driving of the lens barrel . A program for controlling an imaging apparatus having a shooting mode for shooting and a playback mode for playing back and displaying recorded images ,
Detecting means for detecting an abnormality in driving of the lens barrel ;
Storage means for storing information on whether or not an abnormality is detected by the detection means;
In case the information detected an abnormality in the storage means is stored, when said from the playback mode to change the operating mode to the shooting mode, a program for causing a computer to function as a control means for turning off the power of its own.

Images