JP2010197763A - Image capturing apparatus and camera accessory - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image capturing apparatus capable of setting at least one of the moving speed and moving acceleration of the moving part of an accessory member, according to the sound of the surrounding environment. <P>SOLUTION: The image capturing apparatus includes: an image sensor 10 for capturing object light which has passed through a lens member 2a; a sound detection unit 20 for detecting the sound of the surrounding environment; an attachment part to and from which the accessory member 2 having the moving part 2a which can be moved by a drive source 34 can be removed; a first setter 14 for setting the set value of at least one of the first moving speed and the first moving acceleration when the moving part 2a of the accessory member 2 is moved, on the basis of the sound detected by the sound detection unit 20; and a control unit 14 for controlling the movement of the moving part 2a of the accessory member 2, on the basis of the set value set by the first setter 14. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an imaging device and a camera accessory.

  When taking a still image, instruct the actuator that drives the photographic lens to drive at non-quiet (high speed) during still image shooting. When shooting moving images that record moving images and sounds, the actuator that drives the photographic lens is silent. An imaging apparatus that instructs to drive at a low speed has been proposed (see, for example, Patent Document 1).

JP 2007-6305 A

  By the way, in the image pickup apparatus described in Patent Document 1, when it is necessary to take an image without making a sound as much as possible, for example, when there is no sound around, if a photographing lens is driven at a high speed, a loud sound is generated. There was a problem that it might be annoying to others. In addition, for example, when imaging is performed without worrying about the sound associated with driving the photographic lens, such as when the surroundings are noisy, the photographic lens may be driven at a high speed, but the photographic lens is driven at a low speed. (Especially in the case of imaging with recording of moving images or the like, there is a case where the lens is driven at a low speed for fear of recording the lens driving sound), and there is a case where useless time is spent for focus alignment and the like.

  An object of the present invention is to provide an imaging apparatus and a camera accessory that can optimize at least one of a moving speed and a moving acceleration of a moving part of an accessory member according to the sound of the surrounding environment.

  The present invention solves the above problems by the following means. In addition, in order to make an understanding easy, it attaches | subjects and demonstrates the code | symbol corresponding to embodiment of this invention, but this invention is not limited to this.

  The image pickup apparatus of the present invention can be moved by an image pickup element (10) for picking up subject light through the lens member (2a), a sound detection unit (20) for detecting sound of the surrounding environment, and a drive source (34). The accessory member (2) having a movable part (2a) can be attached and detached, and the moving part (2a) of the accessory member (2) based on the sound detected by the sound detecting part (20) Based on the setting value set by the first setting unit (14) for setting at least one of the first moving speed and the first moving acceleration when moving, and the setting value set by the first setting unit (14), And a controller (14) for controlling the movement of the moving part (2a) of the accessory member (2).

  The camera accessory according to the present invention is a camera accessory that can be attached to and detached from the imaging apparatus, and includes a moving unit that can be moved by a driving source, a sound detecting unit that detects sounds in the surrounding environment, and the sound detecting unit. Based on the detected sound, a first setting unit that sets a setting value of at least one of a first moving speed and a first moving acceleration when the moving unit moves, and a setting value by the first setting unit And a control unit that controls movement of the moving unit.

  According to the imaging device and the camera accessory of the present invention, at least one of the moving speed and the moving acceleration of the moving part of the accessory member can be optimized according to the sound of the surrounding environment.

It is a perspective view which shows the external appearance of the electronic camera which concerns on embodiment. It is a block diagram which shows the system configuration | structure of the electronic camera and lens unit which concern on embodiment. It is a flowchart for demonstrating the process which an electronic camera and a lens unit at the time of imaging a still image with the electronic camera which concerns on embodiment. It is a flowchart for demonstrating the process at the time of setting the setting value of the moving speed of an imaging lens. It is a graph which shows the relationship between a loudness and a 1st moving speed. It is a graph which shows the relationship between a subject's brightness and a scanning movement upper limit speed. It is a block diagram which shows the system configuration | structure of an illuminating device.

  Hereinafter, an electronic camera as an imaging apparatus according to an embodiment will be described with reference to the drawings. FIG. 1 is a perspective view showing an appearance of an electronic camera 1 according to an embodiment. As shown in FIG. 1, a lens unit 2 that can be attached to and detached from a lens mount portion (not shown) of the main body of the electronic camera 1 is attached to the center of illumination of the electronic camera 1. The lens unit 2 includes a photographic lens 2a that can move in the optical axis direction within the lens unit 2, and the photographic lens 2a guides light from the subject into the camera. Also, on the upper surface of the electronic camera 1, a release button 3 that is operated when instructing to capture a still image, an up button 4 that manually increases the moving speed of the photographing lens 2a, and a moving speed of the photographing lens 2a that are manually operated. A down button 5 for decreasing and a shooting mode dial 6 operated when switching the shooting mode are provided. In addition, a microphone 7 is provided on the front of the electronic camera 1 for collecting sounds of ambient environment such as sound recorded together with the moving image when the moving image is recorded.

  FIG. 2 is a block diagram showing a system configuration of the electronic camera 1 and the lens unit 2 according to the embodiment. As shown in FIG. 2, the electronic camera 1 includes an image sensor 10, a signal processing unit 12, a control unit 14, a recording medium 16, an operation unit 18, a sound detection unit 20, a power supply unit 22, a power supply voltage detection unit 24, and a communication. A portion 26 is provided. The image sensor 10 is configured by a CCD, a CMOS, or the like, images subject light via the photographing lens 2a, and outputs an image signal to the signal processing unit 12. The imaging signal output from the imaging element 10 is converted from an analog signal to a digital signal in the signal processing unit 12 and output to the control unit 14.

  The control unit 14 is configured by a microprocessor or the like, and comprehensively controls each unit of the electronic camera 1. The control unit 14 performs various types of image processing (white balance adjustment, color correction, tone correction, etc.) on the image data of the digital signal output from the signal processing unit 12 and shoots the image processed image data. Along with information related to shooting such as date and time, exposure, etc., it is temporarily stored in a buffer memory (not shown) in a predetermined format such as Exif (Exchangeable image file format).

  The recording medium 16 is a portable recording medium that is detachably attached to a card slot (not shown) provided in the electronic camera 1. For example, a CF card, an SD card, smart media, or the like is used. The recording medium 16 records image data read from the buffer memory by the control unit 14 and information related to photographing added to the image data. In addition, the sound collected by the microphone 7 is recorded on the recording medium 16.

  The operation unit 18 includes a power switch (not shown) for turning on / off the power, a release button 3, an up button 4, a down button 5, and a shooting mode dial 6 shown in FIG. The sound detection unit 20 detects the volume of sound collected by the microphone 7 and outputs the detection result to the control unit 14. The power supply unit 22 supplies power to each part of the electronic camera 1 and each part of the lens unit 2 attached to the electronic camera 1. The power supply voltage detection unit 24 detects the voltage value of the power supply unit 22 and outputs the detection result to the control unit 14. The communication unit 26 communicates with a communication unit 30 (described later) of the lens unit 2 when the lens unit 2 is attached to the electronic camera 1. For example, the electronic camera 1 (the control unit 14) transmits a signal from the communication unit 26 to the lens unit 2 via the communication unit 30, and is transmitted from the lens unit 2 via the communication unit 26 from the communication unit 30. Receive a signal.

  As shown in FIG. 2, the lens unit 2 includes a control unit 30, a communication unit 32, and a lens driving unit 34. The control unit 30 is configured by a microprocessor or the like, and comprehensively controls each unit of the lens unit 2. The communication unit 32 communicates with the communication unit 26 of the electronic camera 1 when the lens unit 2 is attached to the electronic camera 1. That is, the lens unit 2 (the control unit 30) transmits a signal from the communication unit 32 to the electronic camera 1 via the communication unit 26 of the electronic camera 1, and the electronic camera 1 from the communication unit 26 via the communication unit 32. The signal transmitted from is received. The lens driving unit 34 moves the photographing lens 2 a in the optical axis direction according to control by the control unit 30.

  Next, processing performed by the electronic camera 1 and the lens unit 2 when a still image is captured by the electronic camera 1 according to the embodiment will be described with reference to a flowchart shown in FIG.

  First, as shown in FIG. 3, when the control unit 14 of the electronic camera 1 recognizes that the release button 3 is half-pressed by the user (Step S10), the speed at which the photographing lens 2a moves to detect the subject. And a setting value for the speed at which the photographic lens 2a moves to adjust the focal position (step S11).

FIG. 4 is a flowchart for explaining processing when setting a moving speed setting value of the photographing lens 2a. First, the control unit 14 acquires the loudness detected by the sound detection unit 20 based on the sound of the surrounding environment collected by the microphone 7 (step S30). Next, the control unit 14 sets a moving speed (referred to as a first moving speed) of the photographing lens 2a based on the loudness acquired in step S30 (step S31). If the first moving speed is increased, the subject can be detected and the focus position can be adjusted more quickly, but the sound generated when the photographing lens 2a moves increases. On the other hand, if the first moving speed is slowed, the sound generated when the photographic lens 2a moves is reduced, but it takes a lot of time to detect the subject and focus. Therefore, as shown in the graph of FIG. 5, when the loudness S detected by the sound detector 20 is 0 ≦ S ≦ S ₁ , the control unit 14 causes the photographic lens 2 a to move because the ambient sound is small. It is determined that a loud sound should not be generated when moving, and the first moving speed V is set to a speed V ₁ that can minimize the sound generated when the photographing lens 2a moves. Similarly, when the sound volume S is S ₁ <S <S ₂ , the first moving speed V is set to V ₁ <V <V ₂ according to the sound of the surrounding environment, and the sound volume S is S _{When 2} ≦ S, it is determined that a loud sound may be emitted when the photographic lens 2a moves because the sound of the surrounding environment is loud, and the first moving speed V is detected as soon as possible and the focus detection is performed. Is set to a speed V _{2 at} which

  In step S31, the first movement speed is automatically set based on the detection result by the sound detection unit 20, but the user manually operates the up button 4 or the down button 5 to operate the first movement speed. The first moving speed can also be set. Specifically, the user can set the first moving speed faster in steps by pressing the up button 4 at least once, and the first moving speed can be set in steps by pressing the down button 5 at least once. Can be set slower.

  Next, the control part 14 acquires the voltage value of the power supply part 22 detected by the power supply voltage detection part 24 (step S32). Next, the control unit 14 sets a moving speed (referred to as a second moving speed) of the photographing lens 2a based on the voltage value acquired in step S32 (step S33). That is, when the voltage value detected by the power supply voltage detector 24 is large, a large amount of power can be supplied to move the photographic lens 2a, so the second moving speed can be set fast. On the other hand, when the voltage value detected by the power supply voltage detection unit 24 is small, a large amount of power cannot be supplied to move the photographic lens 2a. Therefore, it is necessary to set the second moving speed slower. Therefore, the upper limit moving speed of the photographing lens 2a is obtained from the upper limit value of the power supply that can be received from the power supply unit 22, and the obtained upper limit moving speed is set as the second moving speed.

  Next, the control unit 14 compares the first movement speed set in step S31 and the second movement speed set in step S33 (step S34), and whichever is smaller of the first movement speed and the second movement speed. Is selected (step S35). Then, the control unit 14 sets the speed selected in step S35 as a set value for the speed at which the photographic lens 2a moves to detect the subject and the speed at which the photographic lens 2a moves to adjust the focus position. (Step S11). Next, the control unit 14 transmits information on the set value of the moving speed set in step S11 and an instruction to start moving the photographing lens 2a to the lens unit 2 via the communication unit 26 (step S12).

  The control unit 30 of the lens unit 2 receives information on the set value of the moving speed of the photographing lens 2a and an instruction to start moving the photographing lens 2a from the electronic camera 1 via the communication unit 32 (step S20). Next, the control unit 30 determines the moving speed of the photographing lens 2a based on the set value of the moving speed of the photographing lens 2a received from the electronic camera 1 in step S20 (step S21). Specifically, a moving speed when the photographing lens 2a is scanned to detect the subject (referred to as a scanning movement speed), and a time when the photographing lens 2a is adjusted and moved for focus adjustment after the subject is detected. The movement speed (referred to as adjustment movement speed) is determined.

  First, the scan movement speed is determined. Conversion and accumulation of dark subject light into charges by the image sensor 10 requires more time than that of bright subject light, and therefore it is necessary to adjust the speed of scan movement according to the brightness of the subject. For example, as shown in the graph of FIG. 6, an upper limit speed of scan movement is provided in consideration of the time required for photoelectric conversion according to the brightness of the subject. Therefore, the control unit 30 of the lens unit 2 receives information on the upper limit speed of the scan movement with respect to the brightness of the subject from the electronic camera 1, and the upper limit speed of the scan movement with respect to the received brightness of the subject, in step S20, the electronic camera 1 Among the set values of the moving speed of the photographing lens 2a received from the above and the upper limit speed of the photographing lens 2a that can be obtained in the lens unit 2, the smallest speed is determined as the scanning moving speed of the photographing lens 2a.

  Next, the adjustment moving speed is determined. When the adjustment movement is performed, there is no restriction on the time required for photoelectric conversion by the image sensor 10, so the setting value of the moving speed of the photographing lens 2a received from the electronic camera 1 in step S20 and the photographing lens 2a that can be taken out by the lens unit 2 are used. And the smaller one is determined as the adjustment moving speed of the photographic lens 2a.

  When the upper limit speed of scan movement relative to the brightness of the subject is determined as the scan movement speed, the scan movement speed is different from the adjustment movement speed, but the scan movement speed is not the upper limit speed of the scan movement relative to the brightness of the subject. In this case, the scanning movement speed and the adjustment movement speed are the same. Further, although the lens unit 2 determines the scanning movement speed and the adjustment movement speed of the photographing lens 2a, the electronic camera 1 can also determine the scanning movement speed and the adjustment movement speed of the photographing lens 2a. In this case, the lens unit 2 transmits information related to the upper limit speed of the photographing lens 2 a that can be taken out in the lens unit 2 to the electronic camera 1.

  Next, in accordance with the movement start instruction of the electronic camera 1, the control unit 30 moves the photographic lens 2a in the optical axis direction at the scan movement speed determined in step S21 via the lens driving unit 34, detects the subject, After detecting the subject, the photographing lens 2a is moved in the optical axis direction at the adjustment moving speed determined in step S21, and the focus position is adjusted (step S22). Then, the control unit 30 transmits information indicating that the scan movement and the adjustment movement have been completed to the electronic camera 1 via the communication unit 32 (step S23).

  The control unit 14 of the electronic camera 1 does not detect the loudness of the sound collected by the microphone 7 with respect to the sound detection unit 20 while the control unit 30 of the lens unit 2 performs the processing of steps S20 to S23. (Step S13). That is, while the photographing lens 2a is moving, the set value of the moving speed of the photographing lens 2a is not set. Specifically, the control unit 14 determines that the photographic lens 2a has started to move when an instruction to start the movement of the photographic lens 2a is transmitted to the lens unit 2 in step S12. Instruct to not detect the loudness of the sound (step S13). When the information indicating that the scanning movement and the adjustment movement are completed is received from the lens unit 2 via the communication unit 26 (step S14), it is determined that the photographing lens 2a has finished the movement, and the sound detection unit 20 is instructed to resume the detection of the loudness (step S15).

  Although it is determined that the movement of the photographing lens 2a is started when information on the setting value of the moving speed of the photographing lens 2a is transmitted, for example, the lens unit 2 transmits information indicating the movement start to the electronic camera 1. In this case, it is determined that the photographing lens 2a has started to move when the information indicating the movement start is received from the lens unit 2. Further, it is determined that the movement of the photographing lens 2a is finished when the information indicating that the scanning movement and the adjustment movement are finished is received from the lens unit 2, but for example, a signal indicating the end of autofocus is received from the lens unit 2. At this point, it can also be determined that the taking lens 2a has finished moving.

  Next, the control unit 14 permits the release button 3 to be fully pressed (step S16), and when the user recognizes that the release button 3 has been fully pressed, the imaging device 10 images the subject light (step S17). . A setting value is set for the speed at which the photographic lens 2a moves to detect the captured image and the speed at which the photographic lens 2a moves to adjust the focus (step S11). Image data captured by the image sensor 10 and subjected to various image processes via the signal processing unit 12 is recorded in the recording medium 16.

  In addition, although the process at the time of capturing a still image has been described, the same process is performed when a moving image is captured. When capturing a moving image, first, the user presses a live view button or the like (not shown) to display the live view image on a display unit such as a liquid crystal panel (not shown), and presses the release button 3 halfway. When recognizing that the release button 3 is half-pressed, the control unit 14 executes a series of processes shown in FIG. Then, after the photographing lens 2a has finished moving, recording of a moving image is started by pressing an OK button (not shown) by the user, and recording of the moving image is ended when the OK button is pressed again.

  According to the electronic camera 1 according to this embodiment, the moving speed of the photographic lens 2a can be optimized according to the sound volume of the surrounding environment. That is, when the sound of the surrounding environment is loud, the subject can be detected and focused quickly by moving the photographing lens 2a quickly, and when the sound of the surrounding environment is small, the photographing lens 2a is moved relatively slowly. By doing so, it is possible to minimize the sound generated when the photographic lens 2a moves.

  In this embodiment, the microphone 7 and the sound detection unit 20 are provided in the electronic camera 1, but the microphone and the sound detection unit are provided in the lens unit 2, and the first moving speed is set in the lens unit 2. You can also. Further, although the power supply voltage detection unit 24 is provided in the electronic camera 1, the power supply voltage detection unit may be provided in the lens unit 2 and the second moving speed may be set in the lens unit 2. When the lens unit 2 is provided with a microphone, a sound detection unit, and a power supply voltage detection unit, all processing related to the moving speed of the photographic lens 2a can be performed in the lens unit 2. In this case, since it is not necessary to perform communication between the electronic camera 1 and the lens unit 2, subject detection and focus position adjustment can be performed more quickly.

  Further, in this embodiment, the electronic camera in which the lens unit is configured to be detachable has been described. However, the present invention can also be applied to an electronic camera integrated with a photographing lens such as a compact camera. In this case, since there is no lens unit, all processing relating to the moving speed of the photographing lens is performed in the electronic camera.

  In this embodiment, the lens unit 2 is described as an example of a camera accessory, but the present invention can also be applied to a lighting device as a camera accessory. For example, a case where a hot shoe for mounting an illuminating device capable of emitting illumination light for photographing is provided at the upper center position of the electronic camera 1 shown in FIG. 1 and the illuminating device is mounted on the hot shoe will be described. . FIG. 7 is a block diagram showing a system configuration of the illumination device 40 attached to the electronic camera 1. As illustrated in FIG. 7, the lighting device 40 includes a control unit 42 that comprehensively controls each unit of the lighting device 40, a communication unit 44 that communicates with the communication unit 26 of the electronic camera 1, and power for the lighting device 40. A power supply unit 46, a power supply voltage detection unit 47 that detects a voltage value of the power supply unit 46, a light emitting unit 48 that emits illumination light and is movable in the light emitting optical axis direction, and a drive unit 50 that moves the light emitting unit 48 in the light emitting optical axis direction. It has. The power supply voltage detection unit 47 outputs the voltage value of the power supply unit 46 to the control unit 42, and the control unit 42 sends information regarding the voltage value of the power supply unit 46 to the electronic camera 1 via the communication unit 44. Send. The electronic camera 1 acquires the voltage value of the power supply unit 46 from the transmitted information regarding the voltage value of the power supply unit 46. An illumination device that receives power from the power supply unit 22 of the electronic camera 1 can also be provided.

  And the electronic camera 1 controls the moving speed of the light emission part 48 by performing the process similar to the process shown to the flowchart of FIG.3 and FIG.4. That is, the moving speed of the light emitting section 48 is determined based on the loudness of the surrounding environment and the voltage value of the power supply section 46, and the light emitting section 48 is moved in the light emitting optical axis direction via the driving section 50 at the determined moving speed. Move.

  In addition, the lighting device 40 may be provided with a microphone and a sound detection unit, and the first moving speed may be set in the lighting device 40. In addition, since the second moving speed can be set in the lighting device 40, all the processes related to the moving speed of the light emitting unit 48 can be performed in the lighting device 40. In this case, since it is not necessary to perform communication between the electronic camera 1 and the illumination device 40, subject detection and focus position adjustment can be performed more silently and quickly.

  In the above-described embodiment, the moving speed of the photographing lens 2a (light emitting unit 48) is controlled, but the moving acceleration of the photographing lens 2a (light emitting unit 48) is controlled by performing the same processing. Can do. It is also possible to control both the moving speed and the moving acceleration of the photographing lens 2a (light emitting unit 48).

  In the above-described embodiment, the moving speed of the photographing lens 2a (light emitting unit 48) is set based on the loudness of the sound, but the photographing lens 2a (light emitting unit 48) is set based on the sound frequency. The moving speed can also be set. For example, in different shooting scenes, there are cases where features appear in the frequency components of the sound even if there is no difference in the volume of the sound in the surrounding environment. Therefore, information on the frequency band of sound that can be assumed for each shooting scene and information on the upper limit speed of the shooting lens 2a (light emitting unit 48) based on the frequency band are stored in advance in a memory (not shown) and collected by the microphone 7. It is also possible to detect the frequency of the sound and set the set value of the moving speed of the photographing lens 2a (light emitting unit 48) from the detection result.

  DESCRIPTION OF SYMBOLS 1 ... Electronic camera, 2 ... Lens unit, 2a ... Shooting lens, 3 ... Release button, 4 ... Up button, 5 ... Down button, 6 ..., 7 ... Microphone, 10 ... Image sensor, 12 ... Signal processing part, 14 ... Control unit, 16 ... recording medium, 18 ... operation unit, 20 ... sound detection unit, 22 ... power supply unit, 24 ... power supply voltage detection unit, 26 ... communication unit, 34 ... lens drive unit, 40 ... illumination device.

Claims (20)

An image sensor for imaging subject light via a lens member;
A sound detector for detecting the sound of the surrounding environment;
A mounting part that can attach and detach an accessory member having a moving part that can be moved by a drive source;
A first setting unit that sets a setting value of at least one of a first moving speed and a first moving acceleration when moving the moving unit of the accessory member based on the sound detected by the sound detecting unit;
A control unit for controlling movement of the moving unit of the accessory member based on a set value set by the first setting unit;
An imaging device comprising:   The imaging apparatus according to claim 1, wherein the sound detection unit detects the volume of the sound.   The imaging apparatus according to claim 1, wherein the sound detection unit does not detect the sound while the moving unit is moving.   4. The first setting unit according to claim 1, wherein the first setting unit does not set the first moving speed and the first moving acceleration while the moving unit is moving. 5. Imaging device. A voltage detection unit for detecting the voltage of the power supply unit;
A second setting unit that sets a setting value of at least one of a second moving speed and a second moving acceleration when the moving unit moves based on the voltage detected by the voltage detecting unit;
The said control part controls the movement of the said moving part based on either of the setting values set by the said 1st setting part and the said 2nd setting part. 5. The imaging device according to any one of 4.   The control unit is at least one of the smaller one of the first movement speed and the second movement speed, and the smaller one of the first movement acceleration and the second movement acceleration, The imaging apparatus according to claim 5, wherein the moving unit is moved. The mounting portion is a lens mount portion to which the lens member can be attached and detached,
The accessory member is the lens member,
The moving unit is a lens that can move in the optical axis direction within the lens member;
The first setting unit sets a setting value of at least one of a first movement speed and a first movement acceleration in the optical axis direction of the lens member based on the sound,
The said control part controls the movement to the optical axis direction of the said lens member based on the said setting value set by the said 1st setting part, The any one of Claims 1-6 characterized by the above-mentioned. The imaging device according to item.   The imaging apparatus according to claim 7, wherein a speed at which the lens moves to detect the subject is different from a speed at which the lens moves to adjust a focus position.   The imaging apparatus according to claim 7, wherein a speed at which the lens moves to detect the subject and a speed at which the lens moves to adjust a focal position are the same. The mounting part is a hot shoe for mounting a lighting device capable of emitting illumination light for photographing, and the accessory member is the lighting device,
The moving unit is a light source that is movable in the direction of the light-emitting optical axis by the illumination device times,
The first setting unit sets a setting value of at least one of a first movement speed and a first movement acceleration in the light emission optical axis direction of the light source based on the sound,
The said control part controls the movement to the said light emission optical axis direction of the said light source based on the said setting value set by the said 1st setting part, The any one of Claims 1-6 characterized by the above-mentioned. The imaging device according to one item.   11. The imaging apparatus according to claim 1, further comprising a signal output unit that outputs a control signal from the control unit to the accessory member. An accessory for a camera that can be attached to and detached from an imaging device,
A moving part movable by a driving source;
A sound detector for detecting the sound of the surrounding environment;
A first setting unit that sets a setting value of at least one of a first moving speed and a first moving acceleration when the moving unit moves based on the sound detected by the sound detecting unit;
A control unit for controlling movement of the moving unit based on a set value by the first setting unit;
A camera accessory comprising:   The camera accessory according to claim 12, wherein the sound detection unit detects the volume of the sound.   14. The camera accessory according to claim 12, wherein the sound detection unit does not detect the sound while the moving unit is moving.   15. The first setting unit according to claim 12, wherein the first setting unit does not set the first moving speed and the first moving acceleration while the moving unit is moving. Camera accessories. A voltage detection unit for detecting the voltage of the power supply unit;
A second setting unit that sets a setting value of at least one of a second moving speed and a second moving acceleration when the moving unit moves based on the voltage detected by the voltage detecting unit;
The said control part controls the movement of the said moving part based on either of the setting values set by the said 1st setting part and the said 2nd setting part. 15. The camera accessory according to any one of 15.   The control unit is at least one of the smaller one of the first movement speed and the second movement speed, and the smaller one of the first movement acceleration and the second movement acceleration, The camera accessory according to claim 16, wherein the moving unit is moved. The camera accessory is a lens member,
The moving unit is a lens that is movable in the optical axis direction within the lens member;
The first setting unit sets a setting value of at least one of a first movement speed and a first movement acceleration in the optical axis direction of the lens member based on the sound,
18. The control unit according to claim 12, wherein the control unit controls movement of the lens member in an optical axis direction based on the set value set by the first setting unit. The camera accessory described in the section.   19. The speed at which the lens moves in the optical axis direction for detecting the subject is different from the speed at which the lens moves in the optical axis direction for focus alignment. Accessories for cameras. The camera accessory is an illumination device capable of emitting illumination light for photographing,
The moving unit is a light source that is movable in the direction of the light emission optical axis in the illumination device,
The first setting unit sets, based on the sound, a set value of at least one of a first movement speed and a first movement acceleration in the light emission optical axis direction of the light source,
18. The control unit according to claim 12, wherein the control unit controls movement of the light source in the direction of the light emission optical axis based on the set value set by the first setting unit. The camera accessory according to one item.

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