JP2024006319A - Imaging apparatus, accessory device, and method for controlling these - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently use a function of an accessory device according to the state of power supply to the device.

SOLUTION: An accessory device 100 is removably and communicably attached to an imaging apparatus 200. The accessory device has: operating means 106, 108, 110, 111 that operate upon energization; accessory control means 113 that controls the operation of the operating means; and switching means 115 that switches the state of power supply to the accessory device to a first power supply state where it receives power supply only from the imaging apparatus and a second power supply state where it receives power supply from external power supply means different from the imaging apparatus. In the second power supply state, the accessory control means causes the operating means to perform a second operation using a larger amount of power than that in a first operation of the operating means in the first power supply state.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to an accessory device such as a lens device that can be attached to and detached from an imaging device.

A lens device capable of driving optical members such as a lens group and an aperture using an actuator receives power from an imaging device such as a digital camera to which the lens device is attached. However, the power that can be supplied to the lens device for each imaging device is limited, and the imaging device sends drive instructions to the lens device to drive the optical member so as not to exceed the power that it can supply to the lens device. let

Further, Patent Document 1 discloses a lens device that can directly receive power supply from an external power supply device without going through an imaging device. In such a lens device, even if the power supplied from the imaging device is limited, by receiving power from an external power supply, it is possible to use more functions of the lens device with fewer restrictions. becomes.

Unexamined Japanese Patent Publication No. 2018-54774

When sufficient power is supplied to the lens device and the imaging device issues a driving instruction according to the supplied power, the functions of the lens device can be fully used. In other words, even if power is supplied to the lens device from an external power supply device, the functions of the lens device cannot be fully used if the driving instructions from the imaging device limit the functions of the lens device. . Patent Document 1 does not mention a drive instruction from an imaging device when an external power supply device is connected to a lens device.

The present invention provides an accessory device and an imaging device that make it possible to fully use the functions of the lens device (accessory device) depending on the power supply state of the lens device.

An accessory device as one aspect of the present invention is detachably and communicably attached to an imaging device. The accessory device includes an operation means that operates when energized, an accessory control means that controls the operation of the operation means, and a power supply state to the accessory device that is a first power supply state in which power is supplied only from the imaging device. and a switching means for switching to a second power supply state in which power is supplied from an external power supply means different from that of the imaging device. The accessory control means causes the operating means to perform a second operation using more power than the first operation of the operating means in the first power supply state in the second power supply state. Features.

Further, in an imaging device according to another aspect of the present invention, an accessory device having an operating means that operates when energized is detachably and communicably attached to the imaging device. The imaging device includes a camera power supply means for supplying power to the accessory device, and a camera control means for causing the accessory device to operate the operation means. The camera control means has a power supply state in which the accessory device is in a second power supply state of a first power supply state in which power is supplied only from the camera power supply means and a second power supply state in which power is supplied from an external power supply means different from the camera power supply means. When in the power supply state, the accessory device is caused to perform a second operation that uses more power than the first operation of the operating means in the first power supply state.

A control method as another aspect of the present invention is applied to an accessory device that is removably and communicably attached to an imaging device and has an operating means that operates when energized. The control method includes the steps of controlling the operation of the operating means, and changing the power supply state to the accessory device to a first power supply state in which power is supplied only from the imaging device and in which power is supplied from an external power supply means different from the imaging device. and switching to a second power supply state. In the step of controlling the operation, in the second power supply state, the operating means performs a second operation using more power than the first operation of the operating means in the first power supply state. It is characterized by

Furthermore, a control method according to another aspect of the present invention is applied to an imaging apparatus in which an accessory device having an operating means that operates when energized is removably and communicably attached, and supplies power to the accessory device. . The control method includes the step of causing the accessory device to perform the operation of the operating means. In the step, the power supply state of the accessory device is a second power supply state of a first power supply state in which power is supplied only from the imaging device and a second power supply state in which power is supplied from an external power source different from the imaging device. characterized in that the accessory device is caused to perform a second operation that uses more power than the first operation of the operating means in the first power supply state. Note that a program that causes a computer of an accessory device or an imaging device to execute processing according to the above control method also constitutes another aspect of the present invention.

According to the present invention, the functions of the accessory device (the operation of the operating means) can be made sufficiently usable depending on the power supply state of the accessory device.

1 is a block diagram showing the configuration of a camera system according to a first embodiment. FIG. 3 is a diagram showing a power supply state in the interchangeable lens of Example 1. 1 is a flowchart showing processing in the interchangeable lens of Example 1. 2 is a flowchart showing processing in the camera body of Example 1.

Embodiments of the present invention will be described below with reference to the drawings.

<Camera system configuration>
FIG. 1 shows the configuration of a camera system including an imaging device (hereinafter referred to as a camera body) and a lens device (hereinafter referred to as an interchangeable lens) as an accessory device, each of which is an embodiment of the present invention. The camera body 200 and the interchangeable lens 100 are connected (attached) via a mount 300, which is a coupling mechanism, to be mechanically detachable and electrically communicable. The camera body 200 supplies power to the interchangeable lens 100 via a power terminal (not shown) provided on the mount 300. Further, the camera body 200 and the interchangeable lens 100 communicate with each other via a communication terminal (not shown) provided on the mount 300.

The interchangeable lens 100 is provided with an external power terminal 500 such as a USB terminal. The interchangeable lens 100 not only receives power from the camera body 200 via the power terminal provided on the mount 300, but also receives power directly from the external power supply device (external power means) 400 via the external power terminal 500. It is possible to receive The external power supply device 400 is a mobile battery or the like, and outputs power to the interchangeable lens 100 by detecting electrical connection with the interchangeable lens 100 (external power terminal 500).

Interchangeable lens 100 has an imaging optical system. The imaging optical system includes a field lens 101, a zoom lens 102 that performs zooming, an aperture unit 103 that adjusts the amount of light, a correction lens 104 that corrects image shake, and a focusing lens that includes a plurality of optical members. A focus lens 105 is included. Zooming, light amount adjustment, image blur correction, and focusing are functions that the interchangeable lens 100 has.

The zoom lens 102 and the focus lens 105 are held by a lens holding frame (not shown). The lens holding frame is guided movably in the optical axis direction in which the optical axis (indicated by a broken line in the figure) extends by a guide shaft (not shown). The zoom lens 102 performs zooming by being driven in the optical axis direction by a zoom lens driving section 106. The position of the zoom lens 102 is detected by a zoom lens detection unit 107. The focus lens 105 performs focusing by being driven in the optical axis direction by the focus lens drive unit 111. The position of the focus lens 105 is detected by the focus lens detection unit 112.

The diaphragm unit 103 adjusts the amount of light by driving its plurality of diaphragm blades in the opening/closing direction by the diaphragm driving section 108 . The aperture value (F value) of the aperture unit 103 is detected by an aperture detection section 109. The correction lens 104 is driven by the correction lens drive unit 110 in a direction perpendicular to the optical axis to perform image shake correction (shake prevention) that reduces image shake caused by camera shake or the like. The position of the correction lens 104 is detected by the correction lens detection section 121.

The zoom lens drive section 106, the focus lens drive section 111, the aperture drive section 108, and the correction lens drive section 110 are composed of a vibration type motor, a voice coil motor, a DC motor, a stepping motor, etc., and operate when energized. It is a means (operating part). In the following description, the zoom lens drive section 106, focus lens drive section 111, aperture drive section 108, and correction lens drive section 110 are also collectively referred to as an optical drive section.

The shake sensor 120 is configured with a gyro sensor or the like, and detects shake of the interchangeable lens 100. A lens microcomputer (accessory control means: hereinafter referred to as lens microcomputer) 113 includes a storage section 114, a control section 116, and a communication section 117. The storage unit 114 holds various parameters of the interchangeable lens 100. The control unit 116 controls the driving (position) of the zoom lens 102, the aperture unit 103, the correction lens 104, and the focus lens 105. For example, the control unit 116 generates a drive command using PID control in response to a deviation between the target position or speed of the controlled object and the current position or speed, and controls the controlled object. The communication unit 117 communicates with the camera body 200.

The power supply section 119 supplies the power supplied from the power supply switching section (switching means) 115 to the zoom lens drive section 106 , the aperture drive section 108 , the correction lens drive section 110 , and the focus lens drive section 111 . The power supply switching section 115 is connected to the power supply section (camera power supply means) 210 of the camera body 200 and the external power supply device 400 . Thereby, the interchangeable lens 100 can selectively receive the driving power for each optical drive unit required by the power supply unit 119 from the camera body 200 and the external power supply device 400.

The camera body 200 includes an image sensor 201, an A/D conversion circuit 202, a signal processing circuit 203, a recording section 204, a camera microcomputer (camera control means: hereinafter referred to as a camera microcomputer) 205, a display section 206, and an operation section 207. .

The image sensor 201 is a photoelectric conversion element composed of a CCD sensor, a CMOS sensor, or the like, and converts light incident from the interchangeable lens 100 into an electrical signal (analog signal). The A/D conversion circuit 202 converts the analog signal output from the image sensor 201 into a digital signal. The signal processing circuit 203 converts the digital signal output from the A/D conversion circuit 202 into video data. The recording unit 204 records the video data output from the signal processing circuit 203. The display unit 206 includes a display device such as an LCD panel or an organic EL panel, and displays an image according to the video data output from the signal processing circuit 203.

The operation unit 207 is operated by a user and inputs various instructions to the camera microcomputer 205. The camera microcomputer 205 includes a communication section 208, a control section 209, and a storage section 211. The communication unit 208 communicates with the interchangeable lens 100. The control unit 209 controls all operations of the camera body 200. Further, the camera microcomputer 205 transmits a drive command to the interchangeable lens 100 via the communication unit 208 in response to video data from the signal processing circuit 203 and instructions from the operation unit 207. The storage unit 211 stores various setting information of the camera body 200. In this embodiment, the storage unit 211 stores information regarding the total power that can be supplied by the power supply unit 210 of the camera body 200. The total power changes depending on the remaining battery level of the power supply unit 210, the degree of deterioration, and the like.

<AF control>
Focus control of the interchangeable lens 100 by the camera microcomputer 205 will be described in detail. The control unit 209 performs AF (autofocus) control based on the video data output from the signal processing circuit 203. Specifically, the control unit 209 controls the focus lens 105 to move and focus on the subject so that the contrast evaluation value of the video data becomes the largest. The control unit 209 outputs the focus drive amount for moving the focus lens 105 to the communication unit 208 as a focus drive command. The communication unit 208 converts the received focus drive command into a control command and transmits it to the interchangeable lens 100 via the communication contact unit of the mount 300. The communication unit 117 within the lens microcomputer 113 converts the received control command into a focus drive command. The control unit 116 generates a focus drive signal based on the focus drive command, and outputs this to the focus lens drive unit 111. As a result, the focus lens 105 is driven according to the focus drive command from the control unit 209.

<Aperture control>
Aperture control of the interchangeable lens 100 by the camera microcomputer 205 will be explained in detail. The control unit 209 performs exposure control based on the video data output from the signal processing circuit 203. Specifically, the control unit 209 determines a target F value so that the brightness value of the video data is constant, and outputs the determined F value to the communication unit 208 as an aperture drive command. The communication unit 208 converts the received aperture drive command into a control command and transmits it to the interchangeable lens 100 via the communication contact unit of the mount 300. The communication unit 117 converts the received control command into an aperture drive command and outputs it to the control unit 116 . The control unit 116 generates an aperture drive signal based on the received aperture drive command and the aperture value detected by the aperture detection unit 109, and outputs this to the aperture drive unit 108. Thereby, the aperture unit 103 is driven according to the aperture drive command from the control section 209.

<Zoom control>
Zoom control of the interchangeable lens 100 by the camera microcomputer 205 will be described in detail. When the user performs a zoom operation on the operation unit 207, the control unit 209 sends a zoom drive amount for moving the zoom lens 102 to the communication unit 208 as a zoom drive command based on the zoom operation amount output from the operation unit 207. Output to. The communication unit 208 converts the received zoom drive command into a control command and transmits it to the interchangeable lens 100 via the communication contact unit of the mount 300. The communication unit 117 converts the received control command into a zoom drive command and outputs it to the control unit 116. The control unit 116 generates a zoom drive signal based on the received zoom drive command and the position of the zoom lens 102 detected by the zoom lens detection unit 107, and outputs this to the zoom lens drive unit 106. Thereby, the zoom lens 102 is driven in response to the zoom operation on the operation unit 207.

<Vibration isolation control>
The image stabilization control by the lens microcomputer 113 will be explained in detail. The control unit 116 determines the target position of the correction lens 104 based on the shake signal output from the shake sensor 120 in response to the shake of the interchangeable lens 100 so as to cancel the image shake on the image sensor 201. The control unit 116 generates a correction lens drive signal based on the actual position and target position of the correction lens 104 detected by the correction lens detection unit 121, and outputs this to the correction lens drive unit 110. As a result, the correction lens 104 is driven in accordance with the shake of the interchangeable lens 100.

<Power supply system>
In FIG. 1, a power supply switching unit 115 serving as a power receiving unit in the interchangeable lens 100 determines the power source that supplies power to the interchangeable lens 100, and determines and switches the source of power supply to the interchangeable lens 100. In FIG. 1, the power supply switching unit 115 determines whether the power supply supplying power to the interchangeable lens 100 is the power supply unit 210 of the camera body 200 or the external power supply device 400.

The power supply unit 210 of the camera body 200 is a first power supply system that can supply power less than the maximum power consumption of the interchangeable lens 100. The external power supply device 400 is a second power supply system that can supply power greater than the maximum power usage of the interchangeable lens 100. The power supply switching unit 115 can determine the source of power supply to the interchangeable lens 100 by observing the voltage between the terminals of the first power supply system and the voltage between the terminals of the second power supply system.

<Lens microcomputer processing>
FIG. 2 shows the power supply state of the interchangeable lens 100. The power supply states of the interchangeable lens 100 include a camera power state (first power supply state) and an external power state (second power supply state). In the camera power state, the interchangeable lens 100 drives each optical drive unit using power supplied only from the power supply unit 210 of the camera body 200. When power supply from the external power supply device 400 becomes available in the camera power state (when connection of the external power supply device 400 to the external power terminal 500 is detected), the power supply switching unit 115 switches to the external power state. In the external power supply state, the interchangeable lens 100 uses power supplied from the external power supply device 400 to drive each optical drive unit.

When detecting removal (disconnection) of the external power supply device 400 in the external power state, the power supply switching unit 115 switches to the camera power state. That is, the power state of the interchangeable lens 100 is not switched to the camera power state until the power supply switching unit 115 detects that the external power supply device 400 is disconnected.

The flowchart in FIG. 3 shows the processing that the lens microcomputer 113 (control unit 116) executes according to the program. The lens microcomputer 113 starts this process when power supply from the camera body 200 to the interchangeable lens 100 is started, and proceeds to step S101.

In step S101, the lens microcomputer 113 sets the power state of the interchangeable lens 100 to the camera power state as an initial state through the power switch unit 115. In the camera power state, the camera microcomputer 205 (control unit 209) determines that the power used by the interchangeable lens 100 is less than or equal to the maximum power that can be supplied to the interchangeable lens 100 from the power supply unit 210 stored in the storage unit 211 in the camera body 200. Limit each drive command so that Thereafter, the camera microcomputer 205 transmits an optical drive command to the lens microcomputer 113 under this power restriction. The lens microcomputer 113 controls the drive of each optical drive unit according to the received optical drive command under power restriction.

Next, in step S102, the lens microcomputer 113 determines whether the power state of the interchangeable lens 100 can be switched from the camera power state to the external power state. If the external power supply state cannot be switched to because the external power supply device 400 is not connected or the supply voltage from the external power supply device 400 is less than a predetermined threshold value, the process returns to step S101 and the camera power state is maintained. On the other hand, if switching to the external power state is possible, the process advances to step S103.

In step S103, the lens microcomputer 113 notifies the camera microcomputer 205 that the external power supply device 400 is connected to the interchangeable lens 100, that is, that the interchangeable lens 100 is in an external power supply state.

Next, in step S104, the lens microcomputer 113 switches the power state of the interchangeable lens 100 from the camera power state to the external power state through the power switch unit 115. Thereafter, the camera microcomputer 205 (control unit 209) transmits an optical drive command to the lens microcomputer 113 without limiting the power used to drive each optical drive unit of the interchangeable lens 100. The power used by the interchangeable lens 100 at this time is allowed to be greater than that in the camera power state. The lens microcomputer 113 drives each optical drive unit according to the received optical drive command.

Next, in step S105, the lens microcomputer 113 determines whether the power supplied from the external power supply 400 has become unusable due to the external power supply 400 being disconnected or due to a drop in the voltage supplied from the external power supply 400. judge. If the external power supply device 400 is unusable, the process advances to step S106; otherwise, the process returns to step S104.

In step S106, the lens microcomputer 113 notifies the camera microcomputer 205 that the external power supply device 400 is not connected, and switches the power state of the interchangeable lens 100 from the external power state to the camera power state through the power switch unit 115. Then, this process ends.

<Camera microcomputer processing>
The flowchart in FIG. 4 shows the processing that the camera microcomputer 205 executes according to the program. The camera microcomputer 205 starts this process when the power of the camera body 200 is turned on, and proceeds to step S201.

In step S201, the camera microcomputer 205 starts supplying power from the power supply unit 210 to the interchangeable lens 100 as an initial state. The camera microcomputer 205 transmits an optical drive command to the lens microcomputer 113 under the power restriction in the camera power state described above.

Next, in step S202, the camera microcomputer 205 determines whether or not the lens microcomputer 113 has notified that the external power supply device 400 has been connected to the interchangeable lens 100, that is, whether the interchangeable lens 100 is in an external power supply state. judge. If it is notified that the external power supply device 400 has been connected, the process advances to step S203; if not, the process returns to step S201.

In step S203, the camera microcomputer 205 changes the optical drive command sent to the lens microcomputer 113 from the above-described optical drive command under power restriction to an optical drive command that does not limit the power usage of the interchangeable lens 100.

Next, in step S204, the camera microcomputer 205 determines whether the lens microcomputer 113 has notified the interchangeable lens 100 that the external power supply device 400 is unusable. If notified, the process advances to step S205; if not notified, this determination is repeated.

In step S205, the camera microcomputer 205 changes the optical drive command sent to the lens microcomputer 113 so that the power used by the interchangeable lens 100 is less than or equal to the total power that can be supplied by the power supply unit 210 stored in the storage unit 211. do. Then, this process ends.

As described above, in this embodiment, the power state of the interchangeable lens 100 is switched between the camera power state and the external power state according to the state of the external power supply device 400, and the driving force is transmitted from the camera body 200 to the interchangeable lens 100. Change instructions depending on power status. Thereby, the functions of the interchangeable lens 100 can be fully used depending on the power state.

<Specific example>
When applying the above-described processing to AF control, the movement speed of the focus lens 105 is improved by using more power to drive (operate) the focus lens drive unit 111 in the external power state than in the camera power state. can be done. As a result, even if the subject moves at high speed and the subject distance changes rapidly, it is possible to take pictures while maintaining the subject in focus. In the camera power state, the movement of the focus lens 105 may not be able to follow sudden changes in the subject distance, and there is a risk that the subject will be photographed in a blurred state.

Furthermore, when applying the above-described processing to zoom control, the moving speed of the zoom lens 102 can be improved by using more power for driving the zoom lens drive unit 106 in the external power state than in the camera power state. can. This allows faster zooming. When the camera is powered on, it may be difficult to zoom in on a distant subject at high speed to capture details of the subject, or to zoom out from a zoomed-in state at high speed to capture a wide range.

Furthermore, when the above-described processing is applied to aperture control, the opening/closing speed of the aperture unit 103 can be improved by using more power for driving the aperture drive unit 108 in the external power state than in the camera power state. . As a result, even if a sudden change occurs in the brightness of the subject, it is possible to take a picture with proper exposure. In the camera power state, the diaphragm unit 103 may not open or close in time for sudden changes in subject brightness, which may cause blown out highlights or blown out shadows in the captured image.

Furthermore, when applying the above-described processing to image stabilization control, more power is used to drive the diaphragm drive unit 108 in the external power state than in the camera power state, so that when the correction lens 104 is suddenly accelerated or decelerated, acceleration can be improved. As a result, even if sudden image shake occurs during panning or the like, it is possible to properly correct the image shake and perform photographing. In the camera power state, there is a possibility that the movement of the correction lens 104 is delayed in response to sudden image shake, resulting in photography with residual image shake.

Furthermore, in the external power state, exclusive control (control that limits the driving of other optical driving parts when driving one of the optical driving parts) of the plurality of optical driving parts of the interchangeable lens 100 is canceled to reduce the total power consumption. All the optical drive units may be driven simultaneously (simultaneous operation) so that the value becomes large. Furthermore, the number of optical drive units that are simultaneously driven among the plurality of optical drive units may be increased. For example, in order to continuously obtain high-quality captured images, it is desirable to drive the zoom lens 102, focus lens 105, correction lens 104, and aperture unit 103 at the same time. However, since power usage is limited in the camera power state, it is necessary to exclusively control the drive of one of the optical drive units. On the other hand, in the external power state, the external power supply device 400 supplies power greater than the maximum power usage of the interchangeable lens 100, so there is no need to perform exclusive control.

<Variations of external power supply status>
In the above embodiment, in the external power state, power is not supplied to the interchangeable lens 100 from the first power supply system (camera body 200), but from the second power supply system (external power supply device 400). The case where power is supplied has been explained. However, in the external power supply state, power may be supplied to the interchangeable lens 100 from both the first power supply system and the second power supply system. By receiving power from both the first power supply system and the second power supply system, the interchangeable lens 100 receives more power than when receiving power only from the second power supply system. be able to.

Next, Example 2 will be explained. In the second embodiment, when the external power supply device 400 is connected to the interchangeable lens 100, the interchangeable lens 100 (lens microcomputer 113) can notify that the external power supply device 400 is connected to the camera body 200 (camera microcomputer 205). I will explain what happens if there is no such thing. If this notification is not possible, the drive command sent from the camera microcomputer 205 to the lens microcomputer 113 cannot be changed from the drive command in the camera power state to the drive command in the external power state. It is not possible to drive the optical drive unit with this amount of power.

In such a case, even if the lens microcomputer 113 receives the aforementioned drive command under power restriction as a drive command from the camera body 200 in the external power state, the lens microcomputer 113 issues an optical drive command that does not limit the power usage to the optical drive unit. The same driving as in the case of reception may be performed. As a result, even if the interchangeable lens 100 does not notify that the external power supply device 400 is connected to the camera body 200, the optical drive section of the interchangeable lens 100 can be driven without limiting the power consumption.

<Switching the control method within the interchangeable lens>
The lens microcomputer 113 makes the control method for driving the optical drive unit (second operation) in the external power supply state different from the control method for driving the optical drive unit (first operation) in the camera power supply state. The power used by the interchangeable lens 100 may be increased. Specifically, each drive unit may be controlled by PWM drive, which consumes a large amount of power, in the camera power state, and by linear drive, which consumes less power, in the external power state. Note that PWM driving generates less noise from the optical drive unit than linear driving, and can reduce the influence of noise on the image sensor 201.

<Other accessory devices and other operating means>
In the above embodiment, a case has been described in which the operating means in the lens device as an accessory device is an optical drive unit that drives an optical member. However, the accessory device is not limited to the lens device, but may be other devices such as a flash device or an electronic viewfinder, and the operating means may be a light emitting section, a display section, etc. that operate when energized. . For example, in the external power supply state, the light emitting unit may emit light brighter than in the camera power supply state, or the display unit may display at a higher frame rate than in the camera power supply state.

The embodiment described above includes the following configuration.
(Configuration 1)
An accessory device detachably and communicably attached to an imaging device, the accessory device comprising:
an operating means that operates when energized;
accessory control means for controlling the operation of the operating means;
switching means for switching a power supply state to the accessory device between a first power supply state in which power is supplied only from the imaging device and a second power supply state in which power is supplied from an external power source different from the imaging device; have,
The accessory control means, in the second power supply state, causes the operating means to perform a second operation using more power than the first operation of the operating means in the first power supply state. An accessory device characterized by:
(Configuration 2)
The accessory control means includes:
in the first power supply state, causing the operating means to perform the first operation in response to a command for the first operation received from the imaging device;
The accessory device according to configuration 1, wherein in the second power supply state, the operating means is caused to perform the second operation in response to a command for the second operation received from the imaging device.
(Configuration 3)
3. The accessory device according to configuration 1 or 2, wherein the accessory control means notifies the imaging device that the second power supply state is present.
(Configuration 4)
The accessory according to any one of configurations 1 to 3, wherein the second power supply state is a state in which power is supplied from only the external power supply means or from both the imaging device and the external power supply means. Device.
(Configuration 5)
The second power supply state is a state in which the accessory device receives more power from the external power source than the maximum power supplied from the imaging device to the accessory device in the first power supply state. Accessory device according to any one of configurations 1 to 4, characterized in that:
(Configuration 6)
6. The accessory device according to configuration 5, wherein the second power supply state is a state in which the accessory device receives power from the external power source that is equal to or higher than the maximum power usage of the accessory device.
(Configuration 7)
The operating means drives the optical member;
The accessory according to any one of configurations 1 to 6, wherein the accessory control means causes the operating means to drive the optical member at a higher speed in the second operation than in the first operation. Device.
(Configuration 8)
The accessory control means may use more power in the second operation than in the first operation by making a control method for the second operation different from a control method for the first operation. 8. The accessory device according to any one of configurations 1 to 7, characterized in that:
(Configuration 9)
In the second power supply state, the accessory control means causes the operation means to perform the second operation even if the command for the first operation is received from the imaging device. 9. The accessory device according to any one of 1 to 8.
(Configuration 10)
An imaging device to which an accessory device having an operating means that operates when energized is removably and communicably attached,
camera power supply means for supplying power to the accessory device;
camera control means for causing the accessory device to operate the operation means;
The camera control means has a first power supply state in which the accessory device is supplied with power only from the camera power supply means, and a second power supply state in which it receives power from an external power supply different from the camera power supply means. When the accessory device is in the second power supply state, the accessory device performs a second operation that uses more power than the first operation of the operating means in the first power supply state. An imaging device characterized by:
(Configuration 11)
The camera control means includes:
when the accessory device is in the first power supply state, transmitting a command for the first operation to the accessory device;
11. The imaging device according to configuration 10, wherein when the accessory device is in the second power supply state, a command for the second operation is transmitted to the accessory device.
(Configuration 12)
The camera control means changes the command to be transmitted to the accessory device from the first operation command to the second operation command in response to receiving a notification from the accessory device that the second power supply state is present. 12. The imaging device according to configuration 11, wherein the imaging device changes to an operation command.
(Configuration 13)
According to any one of configurations 10 to 12, the power source means supplies power to the accessory device together with the external power source when the accessory device is in the second power supply state. Imaging device.
(Configuration 14)
The second power supply state is a state in which the accessory device receives more power from the external power source than the maximum power supplied from the imaging device to the accessory device in the first power supply state. The imaging device according to any one of configurations 10 to 13, characterized in that:
(Configuration 15)
15. The imaging device according to configuration 14, wherein the second power supply state is a state in which the accessory device receives power from the external power source equal to or higher than the maximum power usage in the accessory device.
(Configuration 16)
The operating means drives the optical member,
Any one of configurations 10 to 15, wherein the camera control means causes the accessory device to drive the optical member at a higher speed than the first operation as the second operation of the operation means. The imaging device described in.
(Configuration 17)
The accessory device has a plurality of the operating means,
The camera control means includes:
restricting simultaneous operation of any one of the plurality of operation means and another operation means when the accessory device is in the first power supply state;
According to any one of configurations 10 to 16, when the accessory device is in the second power supply state, the restriction on simultaneous operation is canceled or the number of operation means that are operated simultaneously is increased. Imaging device.

(Other examples)
The present invention provides a system or device with a program that implements one or more of the functions of the embodiments described above via a network or a storage medium, and one or more processors in the computer of the system or device reads and executes the program. This can also be achieved by processing. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

The embodiments described above are merely representative examples, and various modifications and changes can be made to each embodiment when implementing the present invention.

100 Interchangeable lens 102 Zoom lens 103 Aperture unit 104 Correction lens 105 Focus lens 106 Zoom lens drive section 108 Aperture drive section 110 Correction lens drive section 111 Focus lens drive section 113 Lens microcomputer 115 Power supply switching section 200 Camera body 205 Camera microcomputer 210 Power supply section 400 External power supply

Claims (21)

An accessory device detachably and communicably attached to an imaging device, the accessory device comprising:
an operating means that operates when energized;
accessory control means for controlling the operation of the operating means;
switching means for switching a power supply state to the accessory device between a first power supply state in which power is supplied only from the imaging device and a second power supply state in which power is supplied from an external power source different from the imaging device; have,
The accessory control means, in the second power supply state, causes the operating means to perform a second operation using more power than the first operation of the operating means in the first power supply state. An accessory device characterized by: The accessory control means includes:
in the first power supply state, causing the operating means to perform the first operation in response to a command for the first operation received from the imaging device;
The accessory device according to claim 1, wherein in the second power supply state, the operating means is caused to perform the second operation in response to a command for the second operation received from the imaging device. . The accessory device according to claim 1, wherein the accessory control means notifies the imaging device that it is in the second power supply state. The accessory device according to claim 1, wherein the second power supply state is a state in which power is supplied only from the external power supply means or from both the imaging device and the external power supply means. The second power supply state is a state in which the accessory device receives more power from the external power source than the maximum power supplied from the imaging device to the accessory device in the first power supply state. An accessory device according to claim 1, characterized in that there is. The accessory device according to claim 5, wherein the second power supply state is a state in which the accessory device receives power from the external power supply means that is equal to or higher than the maximum power usage of the accessory device. . The operating means drives the optical member;
The accessory device according to claim 1, wherein the accessory control means causes the operating means to drive the optical member at a higher speed in the second operation than in the first operation. The accessory control means may use more power in the second operation than in the first operation by making a control method for the second operation different from a control method for the first operation. The accessory device according to claim 1, characterized in that: The accessory control means, in the second power supply state, causes the operation means to perform the second operation even if it receives a command for the first operation from the imaging device. The accessory device according to item 1. An imaging device to which an accessory device having an operating means that operates when energized is removably and communicably attached,
camera power supply means for supplying power to the accessory device;
camera control means for causing the accessory device to operate the operation means;
The camera control means has a first power supply state in which the accessory device is supplied with power only from the camera power supply means, and a second power supply state in which it receives power from an external power supply different from the camera power supply means. When the accessory device is in the second power supply state, the accessory device performs a second operation that uses more power than the first operation of the operating means in the first power supply state. An imaging device characterized by: The camera control means includes:
when the accessory device is in the first power supply state, transmitting a command for the first operation to the accessory device;
11. The imaging device according to claim 10, wherein when the accessory device is in the second power supply state, a command for the second operation is transmitted to the accessory device. The camera control means changes the command to be transmitted to the accessory device from the first operation command to the second operation command in response to receiving a notification from the accessory device that the second power supply state is present. 12. The imaging apparatus according to claim 11, wherein the image capturing apparatus changes to an operation command. The imaging device according to claim 10, wherein the power supply means supplies power to the accessory device together with the external power supply means when the accessory device is in the second power supply state. The second power supply state is a state in which the accessory device receives more power from the external power source than the maximum power supplied from the imaging device to the accessory device in the first power supply state. The imaging device according to claim 10. The imaging device according to claim 14, wherein the second power supply state is a state in which the accessory device receives power from the external power supply means that is equal to or higher than the maximum power usage in the accessory device. . The operating means drives the optical member;
The imaging device according to claim 10, wherein the camera control means causes the accessory device to drive the optical member at a higher speed than the first operation as the second operation of the operation means. . The accessory device has a plurality of the operating means,
The camera control means includes:
restricting simultaneous operation of any one of the plurality of operation means and another operation means when the accessory device is in the first power supply state;
11. The imaging device according to claim 10, wherein when the accessory device is in the second power supply state, the restriction on simultaneous operation is canceled or the number of operating means for simultaneous operation is increased. A method for controlling an accessory device, the accessory device being detachably and communicably attached to an imaging device and having an operating means that operates when energized,
controlling the operation of the operating means;
switching the power supply state to the accessory device between a first power supply state in which power is supplied only from the imaging device and a second power supply state in which power is supplied from an external power source different from the imaging device. death,
In the step of controlling the operation, in the second power supply state, the operation means is provided with a second operation using more power than the first operation of the operation means in the first power supply state. A control method characterized by causing an action to be performed. A method for controlling an imaging device, wherein an accessory device having an operating means that operates when energized is removably and communicably attached, and the accessory device is supplied with power, the method comprising:
causing the accessory device to perform the operation of the operating means;
In the step, the power supply state of the accessory device is one of a first power supply state in which power is supplied only from the imaging device and a second power supply state in which power is supplied from an external power source different from the imaging device. When the device is in the second power supply state, the accessory device is caused to perform a second operation that uses more power than the first operation of the operating means in the first power supply state. Control method. A program for causing a computer of the accessory device to execute processing according to the control method according to claim 18. A program for causing a computer of the imaging device to execute processing according to the control method according to claim 19.