JP2016191908A - Imaging device - Google Patents

Abstract

An object of the present invention is to provide an image pickup apparatus that is easy to adjust in a macro area and has a good feeling of operation when performing a manual focus operation. A focus lens 310 that adjusts the in-focus state of a subject, an operation unit (MF operation ring 312) that receives a user operation, and a focus lens drive unit that drives the focus lens 310 based on the operation of the operation unit. 311. The focus lens driving unit 311 drives the focus lens 310 so that the operation amount of the operation unit when moving the focus position by a unit distance is constant regardless of the subject distance. [Selection] Figure 3

Description

  The present disclosure relates to an imaging apparatus.

  Patent Document 1 discloses an imaging apparatus that detects a rotation operation amount of a focus ring that is not mechanically connected to a focus lens, and moves and stops the focus lens in the optical axis direction based on the detection result. . When the focus lens is moved / stopped in the optical axis direction, the imaging apparatus of Patent Document 1 controls the linear focus change responsiveness to the detected rotation amount of the focus ring according to at least the depth of focus.

JP 2004-287038 A

  The present disclosure provides an imaging apparatus that is easy to adjust a focus even in a macro region and has a good operation feeling when performing a manual focus operation.

  An imaging apparatus according to the present disclosure includes a focus lens that adjusts the in-focus state of a subject, an operation unit that receives a user operation, and a drive unit that drives the focus lens based on the operation of the operation unit. The drive unit drives the focus lens so that the operation amount of the operation unit when moving the focus position by a unit distance is constant regardless of the subject distance.

  The imaging device according to the present disclosure is easy to adjust the focus even in the macro region when performing a manual focus operation, and has a good feeling of operation.

1 is a front perspective view of a digital camera according to Embodiment 1. FIG. Rear view of the digital camera according to Embodiment 1 1 is a block diagram showing an electrical configuration of a digital camera according to Embodiment 1. FIG. The figure which shows the signal which detects the rotation of the manual focus ring The figure which shows the relationship between a to-be-photographed object distance and MF operation amount The figure which shows the relationship between a to-be-photographed object distance and MF operation amount Diagram showing the relationship between subject distance and focus movement The figure explaining focus movement amount control The figure explaining focus movement amount control The figure explaining focus movement amount control Flowchart for explaining the operation of changing the drive of the focus lens in accordance with the amount of blurring of the digital camera according to the first embodiment

  Hereinafter, embodiments will be described in detail with reference to the drawings as appropriate. However, more detailed description than necessary may be omitted. For example, detailed descriptions of already well-known matters and repeated descriptions for substantially the same configuration may be omitted. This is to avoid the following description from becoming unnecessarily redundant and to facilitate understanding by those skilled in the art.

  The accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

(Embodiment 1)
The first embodiment will be described below with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, the drawings are schematic, and the ratio of each dimension may be different from the actual one. Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.

(1. Configuration)
Hereinafter, the configuration of the digital camera 100 will be described with reference to the drawings.

(1-1. Configuration of Digital Camera 100)
FIG. 1 is a front perspective view of the digital camera 100. The digital camera 100 includes a digital camera body 102 and an interchangeable lens 301. Further, the digital camera 100 includes an operation unit 180 such as a release button 181, a power switch 183, and a mode dial 184 on the upper surface.

  The digital camera 100 also includes a microphone unit 111 on the top surface. The microphone unit 111 includes two microphones, a microphone 111L and a microphone 111R. Among these, the microphone 111 </ b> L and the microphone 111 </ b> R are positioned side by side in the left-right direction on the upper surface of the main body of the digital camera 100.

  FIG. 2 is a rear view of the digital camera 100. The digital camera 100 includes operation units 180 such as a center button 185 and a cross button 186 on the back surface thereof. The digital camera 100 also includes a display unit 190 and a viewfinder 191 on the back surface.

  FIG. 3 is an electrical configuration diagram of the digital camera 100. The digital camera 100 includes a digital camera body 102 and an interchangeable lens 301. The digital camera body 102 includes a CCD image sensor 143, an AFE (analog front end) 144, an audio input system 110, a digital image / audio processing unit 120, a controller 130, a RAM 150, an external storage medium 160, a ROM 170, an operation unit 180, A display unit 190, a viewfinder 191 and a speaker 195 are provided.

  The digital camera 100 generates image information and an audio signal from information obtained from the outside. The image information is generated by the image input system 140. The audio signal is generated by the audio input system 110. The generated image information and audio signal are A / D converted, processed by the digital image / audio processing unit 120, and then recorded on an external storage medium 160 such as a memory card. The image information recorded in the external storage medium 160 is displayed on the display unit 190 or the viewfinder 191 in response to an operation of the operation unit 180 by the user. Here, the image information may be displayed on both the display unit 190 and the viewfinder 191. The audio signal recorded in the external storage medium 160 is output from the speaker 195 in response to an operation of the operation unit 180 by the user.

  The details of each unit shown in FIGS. 1 to 3 will be described below.

  The image input system 140 includes an interchangeable lens 301, a CCD image sensor 143, and an AFE 144.

  The interchangeable lens 301 is an optical system having a plurality of lenses. The interchangeable lens 301 includes a lens controller 320, a lens mount 330, a focus lens 310, a focus lens driving unit 311, a camera shake correction lens 313, a camera shake correction lens driving unit 314, an aperture 316, an aperture driving unit 317, and an MF (manual focus) operation ring. 312 and a gyro sensor 325 capable of detecting the amount of shake are provided. The focus lens 310 and the camera shake correction lens 313 are lenses that constitute an optical system.

  The lens controller 320 controls the entire interchangeable lens 301. The lens controller 320 can control the focus lens driving unit 311 so as to drive the focus lens 310 in response to an operation by the user of the MF operation ring 312. The lens controller 320 can communicate with the controller 130 via the lens mount 330. The controller 130 may be configured with a hard-wired electronic circuit or a microcomputer using a program.

  The lens mount 330 is a connecting member for mechanically and electrically connecting the interchangeable lens 301 and the digital camera body 102 together with the body mount 340 included in the digital camera body 102. When the interchangeable lens 301 and the digital camera body 102 are mechanically and electrically connected, the lens controller 320 and the controller 130 can communicate with each other.

  The focus lens 310 is a lens that changes the focus state of a subject image that is incident on the optical system of the interchangeable lens 301 and formed on the CCD image sensor 143. The lens configuration of the focus lens 310 may be any number or any number of groups. The focus lens driving unit 311 drives the focus lens 310 so as to advance and retract along the optical axis of the optical system based on a control signal notified from the lens controller 320. The focus lens driving unit 311 can be realized by, for example, a stepping motor, a DC motor, an ultrasonic motor, or the like.

  The diaphragm 316 is configured to be able to open and close a plurality of mechanical blades. The diaphragm 316 is an adjustment member that can adjust the amount of light incident on the optical system of the interchangeable lens 301. The aperture driving unit 317 drives to change the open / close state of the mechanical blades of the aperture 316 based on the control signal notified from the lens controller 320. The aperture driving unit 317 can be realized by, for example, a stepping motor, a DC motor, an ultrasonic motor, or the like.

  The MF operation ring 312 is an operation member provided on the outer surface of the interchangeable lens 301. The MF operation ring 312 is configured to rotate relative to the interchangeable lens 301. The rotation position and rotation speed of the MF operation ring 312 are detected by a detection unit (not shown) and notified to the lens controller 320. The lens controller 320 can supply a drive control signal to the focus lens drive unit 311 based on the notified rotation position and rotation speed of the MF operation ring 312. The lens controller 320 supplies a drive control signal to the focus lens driving unit 311 so as to drive the focus lens 310 by operating the MF operation ring 312.

  The body mount 340 is a connecting member for mechanically and electrically connecting the interchangeable lens 301 and the digital camera body 102 together with the lens mount 330 included in the interchangeable lens 301. When the interchangeable lens 301 and the digital camera body 102 are mechanically and electrically connected, the lens controller 320 and the controller 130 can communicate with each other. The body mount 340 notifies the lens controller 320 of the exposure synchronization signal and other control signals received from the controller 130 via the lens mount 330. The body mount 340 notifies the controller 130 of a signal received from the lens controller 320 via the lens mount 330.

  The CCD image sensor 143 captures a subject image formed through the interchangeable lens 301 and generates image information. On the light receiving surface of the CCD image sensor 143, a large number of photodiodes are arranged two-dimensionally (in a matrix). Further, R, G, or B primary color filters are arranged corresponding to the respective photodiodes. The primary color filters for R, G, and B are arranged in a predetermined arrangement structure. The light from the subject to be imaged passes through the interchangeable lens 301 and then forms an image on the light receiving surface of the CCD image sensor 143. The formed subject image is converted into color information classified into R, G, or B according to the amount of light incident on each photodiode. As a result, image information indicating the entire subject image is generated. Each photodiode corresponds to a pixel of the CCD image sensor 143. However, the color information actually output from each photodiode is R, G, or B primary color information. Therefore, the color to be expressed in each pixel is the primary color information (color, light amount) output from the photodiode corresponding to each pixel and the surrounding photodiode in the digital image / sound processing unit 120 in the subsequent stage. Generated based on The CCD image sensor 143 can generate image information of a new frame at regular intervals when the digital camera 100 is in the shooting mode.

  In the AFE 144, noise suppression by correlated double sampling for the image information read from the CCD image sensor 143, amplification to the input range width of the A / D converter by an analog gain controller, and A / D conversion by the A / D converter Is given. Thereafter, the AFE 144 outputs the image information to the digital image / sound processor 120.

  The audio input system 110 includes a microphone unit 111 and an analog audio processing unit 115. The microphone unit 111 includes microphones 111L and 111R. The microphone unit 111 converts an acoustic signal into an electrical signal by each microphone and inputs the electrical signal to the analog sound processing unit 115. The analog audio processing unit 115 performs A / D conversion on the processed audio signal by an A / D converter, and outputs it to the digital image / audio processing unit 120.

  The digital image / sound processor 120 performs various processes on the image information output from the AFE 144 and the sound signal output from the analog sound processor 115. For example, the digital image / sound processing unit 120 performs gamma correction, white balance correction, flaw correction, encoding processing, and the like on the image information in accordance with an instruction from the controller 130. In addition, the digital image / audio processing unit 120 performs various processes on the audio signal in accordance with instructions from the controller 130. The digital image / audio processing unit 120 may be realized by a hard-wired electronic circuit, or may be realized by a microcomputer that executes a program. The digital image / audio processing unit 120 may be realized as one semiconductor chip integrally with the controller 130 or the like.

  The digital image / sound processing unit 120 performs processing of the output of the microphone unit 111 and performs directivity synthesis processing as acoustic zoom processing.

  The display unit 190 is disposed on the back surface of the digital camera 100. In the present embodiment, display unit 190 is a liquid crystal display. The display unit 190 displays an image based on the image information processed by the digital image / sound processing unit 120. The images displayed by the display unit 190 include a through image and a reproduced image. A through image is an image of a frame that is continuously generated by the CCD image sensor 143 at regular intervals. Normally, when the digital camera 100 is set to the shooting mode and is in a standby state where still image shooting is not performed or a moving image shooting state, the digital image / audio processing unit 120 generates the CCD image sensor 143. A through image is generated from the image information. The user can photograph the subject while confirming the composition of the subject by referring to the through image displayed on the display unit 190. The playback image is generated by the digital image / audio processing unit 120 when the digital camera 100 is in the playback mode. The reproduced image is an image obtained by reducing a high-pixel recorded image recorded in the external storage medium 160 or the like to a low pixel in accordance with the size of the display unit 190. The high-pixel image information recorded in the external storage medium 160 is received by the digital image / audio processing unit 120 based on the image information generated by the CCD image sensor 143 after the release button 181 receives a predetermined operation by the user. Generated. The speaker 195 outputs an audio signal recorded on the external storage medium 160. The display content displayed by the display unit 190 can also be displayed by the viewfinder 191.

  The controller 130 controls the overall operation of the digital camera 100.

  The ROM 170 stores programs related to autofocus control (AF control), automatic exposure control (AE control), strobe light emission control, and the like that are executed by the controller 130. The ROM 170 also stores a program for controlling the overall operation of the digital camera 100. The ROM 170 also stores various conditions and settings regarding the digital camera 100. In the present embodiment, the ROM 170 is a flash ROM.

  The controller 130 may be realized by a hard-wired electronic circuit, or a microcomputer that executes a program. The controller 130 may be realized as a single semiconductor chip integrally with the digital image / audio processing unit 120 and the like. The ROM 170 does not need to exist outside the controller 130 (as a separate body from the controller 130), and may be incorporated in the controller 130.

  The RAM 150 functions as a work memory for the digital image / sound processor 120 and the controller 130. The RAM 150 can be realized by an SDRAM or a flash memory. The RAM 150 also functions as an internal memory for recording image information and audio signals.

  The external storage medium 160 is an external memory having a nonvolatile recording unit such as a flash memory. The external storage medium 160 can record data such as image information and audio signals processed by the digital image / audio processing unit 120.

  The operation unit 180 is a general term for operation interfaces such as operation buttons and operation dials arranged on the exterior of the digital camera 100. The operation unit 180 receives an operation by a user. For example, the release button 181, the power switch 183, the mode dial 184, the center button 185, and the cross button 186 shown in FIGS. 1, 2, and 3 correspond to this. When receiving an operation by the user, the operation unit 180 notifies the controller 130 of signals for instructing various operations.

  The release button 181 is a push-down button that transitions into two stages, a half-pressed state and a fully-pressed state. When the release button 181 is half-pressed by the user, the controller 130 executes AF (Auto Focus) control and / or AE (Auto Exposure) control, etc., and determines the photographing condition. In AF control, the digital image / sound processor 120 calculates a contrast value in a predetermined area of image information. Based on this, the controller 130 drives the interchangeable lens 301 to perform feedback control so that the contrast value is maximized. As a result of the AF control, the controller 130 can obtain the focal distance to the subject to be AF controlled. As a result of the AF control, the interchangeable lens 301 can form a subject image to be controlled by the AF on the CCD image sensor 143. Subsequently, when the release button 181 is fully pressed by the user, the controller 130 records image information captured at the timing of the full press in the external storage medium 160 or the like.

  The power switch 183 is a slide switch for turning on / off the power supply to each part of the digital camera 100. When the power switch 183 is slid to the right by the user when the power is OFF, the controller 130 supplies power to each part of the digital camera 100 and activates each part. When the power switch 183 is slid leftward by the user when the power is turned on, the controller 130 stops the power supply to each part of the digital camera 100.

  The mode dial 184 is a rotary dial. When the mode dial 184 is rotated by the user, the controller 130 switches the operation mode of the digital camera 100 to an operation mode corresponding to the current rotation position of the mode dial 184. The operation mode is, for example, an auto shooting mode, a manual shooting mode, a scene selection mode, or the like.

  The center button 185 is a push button. When the center button 185 is pressed by the user when the digital camera 100 is in the shooting mode or the playback mode, the controller 130 displays a menu screen on the display unit 190. The menu screen is a screen for allowing the user to set various shooting conditions and playback conditions. When the center button 185 is pressed while the setting item value of various conditions is selected by the user on the menu screen, the setting item is determined to be that value. The determined setting is stored in the ROM 170.

  The cross button 186 includes four push buttons provided in the vertical and horizontal directions. The user can select values of setting items for various conditions displayed on the menu screen by pressing a button in any direction of the cross button 186.

(1-2. Correspondence with the present invention)
The digital camera 100 is an example of an imaging apparatus of the present invention. The MF operation ring 312 is an example of the operation unit of the present invention. The focus lens driving unit 311 is an example of the driving unit of the present invention. The gyro sensor 325 is an example of a shake detection unit of the present invention. The lens controller 320 is an example of a control unit of the present invention.

(2. Operation)
Next, an outline of the operation of the digital camera 100 in the present embodiment will be described.

  FIG. 4 is a diagram for explaining a detection method when the MF operation ring 312 is operated. When the MF operation ring 312 disposed on the outer periphery of the lens barrel is rotated by the user, a pulse (PI pulse) from a PI (photo interrupter) is output and input to the lens controller 320. The lens controller 320 can detect the rotation direction, rotation speed, and rotation amount of the MF ring from the pulse information.

  The lens controller 320 determines whether to drive the focus lens 310 in the infinite direction or the closest direction according to the rotation direction of the MF operation ring 312, and controls the focus lens driving unit 311. In addition, the lens controller 320 determines whether to perform the “speed control” or “position control” for the focus lens 310 in accordance with the rotational speed (PI pulse output frequency) of the MF operation ring 312, and focus. The lens driving unit 311 is controlled. Here, “speed control” controls the focus lens drive unit 311 so that the drive time between infinity and the nearest distance becomes a specific time according to the frequency of the PI pulse output. “Position control” determines the amount of focus movement according to the number of PI output pulses, and controls the focus lens driving unit 311. In particular, regarding “position control”, when determining the focus movement amount, control specific to the macro lens is performed.

  As shown in FIG. 5A, in the conventional control of the focus lens, the amount of operation of the operation unit when the focus position is moved by a unit distance increases as the macro region (region where the subject distance is close) is increased. That is, the focus movement amount (pulse) per subject distance increases. Here, the focus movement amount is an amount corresponding to the number of pulses, and the unit of the focus movement amount is “pulse”. That is, when the user adjusts the focus from infinity to close, even if the MF operation ring 312 is rotated at a constant speed, the subject distance changes less as the macro region is reached. For this reason, when adjusting the focus, the user needs to turn the MF operation ring 312 many times, and the operability is poor.

  In the technique of the present disclosure, as illustrated in FIG. 5B, the lens controller 320 calculates the subject distance from the current focus lens position, and the operation amount of the operation unit when moving the focus position by a unit distance is constant regardless of the subject distance. Control to become. That is, the lens controller 320 performs control so that the focus movement amount (pulse) of the unit subject distance becomes a constant amount. When the lens controller 320 performs such control, even when the MF operation ring 312 is rotated at a constant speed, the operation amount of the operation unit when the focus position is moved by a unit distance is constant regardless of the subject distance. The focus lens driving unit 311 is controlled.

  Next, the technology of the present disclosure will be described with specific examples. FIG. 6 is a graph showing “focus movement amount (pulse) at a focal depth of 1 Fδ” and “focus movement amount (pulse) at a subject distance of 1 mm” when the MF operation ring 312 is rotated at an extremely low speed. . From this graph, in the macro area closer to the subject distance of 225 mm, the amount of focus movement at the subject distance of 1 mm gradually increases and becomes very large near the closest distance. By the way, other than the macro lens, such a graph is not obtained, and the difference between the “focus movement amount (pulse) at a focal depth of 1 Fδ” and the “focus movement amount (pulse) at a subject distance of 1 mm” is small and has little influence. For this reason, other than the macro lens, there is no problem even with the focus movement amount calculated from the conventional “focus movement amount (pulse) with a focal depth of 1 Fδ”, and the operation feeling is not bad. Here, F of Fδ represents an F value (f-number), and δ represents an allowable circle of confusion.

  A specific example will be further described with reference to FIGS. 7A to 7C show the focus movement amount according to one pulse of the PI output pulse number when the MF operation ring 312 is rotated in the conventional technique and the technique of the present disclosure when the subject distance is 480 mm, 125 mm, and 105 mm. Show.

  Outside the macro area of the subject distance of 480 mm shown in FIG. 7A, when the MF operation ring 312 is rotated at an extremely low speed, the focus movement amount corresponding to one pulse of the PI output pulse number is a focal depth of 0.25 Fδ. It is equivalent to a pulse. When this is converted into the subject distance, it becomes 2.096 mm, and there is no problem with the conventional “focus movement amount (pulse) based on the focal depth” control.

  However, the “focus movement amount (pulse) with a subject distance of 1 mm” gradually increases in the macro area. In the macro area with a subject distance of 125 mm shown in FIG. 7B, the subject distance equivalent to 5 pulses corresponding to a focal depth of 0.25 Fδ is 0.036 mm. Therefore, in the present technology, instead of calculating the focus movement amount from the focal depth, the focus movement amount is calculated so that the focus movement amount (pulse) of the unit subject distance is constant. That is, the focus movement amount with a subject distance of 1 mm is equivalent to 134 pulses.

  Furthermore, at the shortest shooting distance of 105 mm shown in FIG. 7C, the focus movement amount is equivalent to 8 pulses with a focal depth of 0.25 Fδ, which is 0.015 mm when converted into the subject distance. Similarly, when the focus movement amount is calculated so that the subject distance is constant, the focus movement amount at the subject distance of 1 mm is equivalent to 516 pulses.

  The focus movement amount (pulse) of the subject distance of 1 mm can be tuned by changing the MF operation ring 312 according to the rotation speed or by setting parameters. Furthermore, it is also possible to calculate “focus movement amount based on depth of focus” and “focus movement amount based on subject distance”, compare the focus movement amounts, and apply to actual control. As a specific example, “focus movement amount based on depth of focus” and “focus movement amount based on subject distance” are compared, and a value with a large focus movement amount is applied as final control.

  In the focus adjustment at the time of manual focus, conventionally, the focus movement amount is calculated so that the depth of focus becomes constant according to the pulse output amount of the MF operation ring 312. For this reason, the more the subject is in the macro area, the more the subject focus position does not change unless the MF operation ring 312 is rotated more, making it difficult to adjust the focus and the operation feeling is poor. Further, in the case of a macro lens with a long focus stroke, the focus cannot be moved from infinity to the closest point unless the MF operation ring 312 is rotated many times. For this reason, when panning or deciding the subject composition, it may be rough, so it is not possible to quickly adjust the MF focus, and the operability is poor.

  As described above, conventionally, when the user adjusts the MF focus, it is necessary to turn the MF operation ring a lot as it gets closer to the macro area. However, the control according to the present disclosure as described above enables comfortable MF focus adjustment with a constant rotation amount even in the macro region.

  Next, a technique for changing the drive of the focus lens 310 in accordance with the amount of shake of the digital camera 100 will be described.

  Based on the information from the gyro sensor 325 capable of detecting the shake amount, the lens controller 320 calculates whether or not the shake amount is a predetermined amount in a certain period. It is determined that the situation is “1 situation”. If the amount of shake is larger than the predetermined amount, it is determined that the situation is the “second situation”. That is, the lens controller 320 switches the focus movement amount (pulse) even when the detection amount by the rotation operation of the MF operation ring 312 by the user is the same between the “first situation” and the “second situation”.

  The “first situation” is a state where the camera is firmly held for tripod shooting and handheld shooting, and a case where fine adjustment of the focus is performed by manual focus is assumed. In the “first situation”, MF focus accuracy (accuracy of focus adjustment by manual focus) is emphasized, and the focus movement amount with respect to the rotation amount of the MF operation ring 312 is reduced. On the other hand, the “second situation” is a state in which panning such as hand-held shooting or the composition of the subject is determined, and it is assumed that the focus adjustment is quicker than the fine adjustment of the focus. In the “second situation”, the focus movement amount with respect to the rotation amount of the MF operation ring 312 is increased with emphasis on the MF focus speed (speed of focus adjustment by manual focus).

  FIG. 8 is a flowchart for explaining the operation of changing the drive of the focus lens in accordance with the amount of shake of the digital camera 100. The lens controller 320 calculates a shake amount for a certain period based on information from the gyro sensor 325. If the shake amount is equal to or less than a predetermined amount, the lens controller 320 determines that it is “first situation”. If it is larger, it is determined as “second situation” (S801). The focus lens driving unit 311 is driven in the first state in the first situation (S802). On the other hand, the focus lens driving unit 311 is driven in a second state different from the first state in the second situation (S803). Here, in the first state, the drive amount of the focus lens 310 is smaller than in the second state, and the focus movement amount is small.

  With the above control, fine focus adjustment is possible when you want to make fine MF focus adjustments according to the shooting scene of the user, and when you want to make approximate focus adjustments faster than MF focus fine adjustment, you can focus with good response. Adjustment is possible. That is, it is possible to adjust the focus according to the shooting situation.

  The determination of the “first situation” and the “second situation” may be made based on selection information of the camera shake correction switch on the lens side or the camera shake correction mode on the body side. Further, it goes without saying that the “first state” and the “second state” are not completely divided into two, but the focus movement amount is changed linearly in accordance with the amount of shake.

(Other embodiments)
As described above, the first embodiment has been described as an example of the technique disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can also be applied to embodiments that have been changed, replaced, added, omitted, and the like. Moreover, it is also possible to combine each component demonstrated in the said Embodiment 1, and it can also be set as a new embodiment.

  The above-described embodiments are for illustrating the technique in the present disclosure, and various modifications, replacements, additions, omissions, and the like can be made within the scope of the claims and their equivalents.

  In the above-described embodiment, the digital camera 100 has been described as an example of the imaging apparatus of the present disclosure. However, the example of the imaging apparatus of the present disclosure includes a movie camera in addition to the digital camera.

  The imaging device according to the present disclosure is easy to adjust the focus even in the macro region when performing a manual focus operation, and has a good feeling of operation. For this reason, this indication is useful as an imaging device etc.

DESCRIPTION OF SYMBOLS 100 Digital camera 102 Digital camera body 110 Audio | voice input system 111 Microphone part 111L Microphone 111R Microphone 115 Analog audio | voice processing part 120 Digital image and audio | voice processing part 130 Controller 140 Image input system 143 CCD image sensor 150 RAM
160 External storage medium 170 ROM
180 Operation unit 181 Release button 183 Power switch 184 Mode dial 185 Center button 186 Cross button 190 Display unit 195 Speaker 301 Interchangeable lens 310 Focus lens 311 Focus lens drive unit 312 MF operation ring 313 Camera shake correction lens 314 Camera shake correction lens drive unit 316 Aperture 317 Aperture drive unit 320 Lens controller 325 Gyro sensor 330 Lens mount 340 Body mount

Claims (3)

A focus lens that adjusts the focus state of the subject,
An operation unit for accepting a user's operation;
A drive unit that drives the focus lens based on an operation of the operation unit,
The drive unit drives the focus lens so that an operation amount of the operation unit when moving a focus position by a unit distance is constant regardless of a subject distance;
Imaging device. A shake detection unit for detecting the shake amount of the lens barrel;
A control unit for controlling the driving unit,
The controller is configured to drive the driving unit in a first state when a shake amount detected by the shake detection unit is a predetermined value or less, and when the shake amount detected by the shake detection unit exceeds a predetermined value, Controlling the drive unit to drive in a second state different from the first state;
The imaging device according to claim 1. The imaging apparatus according to claim 2, wherein the driving amount of the focus lens is smaller in the first state than in the second state.