JP6155811B2 - Lens barrel and camera - Google Patents

Description

  The present invention relates to a lens barrel and a camera.

In a general camera, photometry and distance measurement are performed with the aperture in the lens barrel open, and the aperture is narrowed to a predetermined value during exposure. For this reason, when taking still images continuously (continuous shooting), it is necessary to perform an operation of opening the aperture for light metering and distance measurement and reducing it to a predetermined value again for each frame. .
As a driving source for such an aperture of a camera, an electrically controllable stepping motor has recently been used.

  The stepping motor requires initial positioning (pre-excitation) by performing initial energization before driving because the stop position becomes unstable when the power is cut off, and it is also driven when stopped. It is necessary to energize (post-excitation) to suppress vibration at the time. For this reason, when continuous shooting is performed in a camera that uses a stepping motor as an aperture drive source, a predetermined excitation time is required every time the aperture is opened and closed for each shooting, and this excitation time defines the shooting interval. However, this is an obstacle to increasing the continuous shooting speed.

  A configuration in which the aperture mechanism is driven by a stepping motor to enable speedy light quantity setting is as follows. A configuration has been proposed in which energization is started in the stepping motor of the aperture unit when a pre-drive start command is transmitted and the control device on the lens side receives this command (see Patent Document 1).

JP 2006-215399 A

  However, in the conventional configuration, the start of energization of the aperture unit is controlled by a command from the control device on the camera body side. That is, the continuous shooting speed depends on the control of the camera body.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a lens barrel and a camera that can quickly drive an aperture mechanism and improve a continuous shooting speed.

The present invention solves the above problems by the following means.
According to one aspect of the present invention, a lens barrel is attached to the camera body, a light quantity adjusting member quantity as possible adjustments that enters the camera body, the light amount adjustment member by utilizing the electromagnetic force comprising a driving unit for driving a control unit for controlling the energization of the front SL driver, and a communication unit for communicating is connected to the camera body, wherein the control unit is input via the communication unit On the basis of the continuous shooting information, the lens barrel is characterized in that energization of the drive unit is continued between shooting operations of continuous shooting at the time of continuous shooting .
The invention described in claim 2 is the lenses barrel is attached to the camera body, and an adjustable light amount adjustment member the amount of light incident on the camera body, the light amount adjustment member by utilizing the electromagnetic force A drive unit that drives, a control unit that controls energization of the drive unit, and a communication unit that is connected to the camera body and performs communication, and the control unit is configured to perform continuous shooting that is input via the communication unit. based on the information, via the communication unit at the time of continuous shooting to predict the timing of the driving instruction of the light amount adjustment member which is input, to start the energization of the predetermined time earlier the driving section from the timing of the predicted The lens barrel characterized by the above.
Previous invention according to claim 3, a lens barrel according to claim 2, wherein the control unit, which includes a time measurement unit for obtaining the exposure time-related information in the camera body, wherein the timing unit has acquired The lens barrel is characterized in that the timing of the drive instruction of the light amount adjusting member is predicted based on the exposure time related information at the time of photographing.
Invention of Claim 4 is a lens-barrel of any one of Claims 1-3 , Comprising : The said continuous imaging | photography information is continuous shooting mode information set to the said camera main body, This is a lens barrel characterized by the following.
The invention according to claim 5 is the lens barrel according to any one of claims 1 to 3 , wherein the continuous shooting information is continuation information of a shooting command input via the communication unit. There is a lens barrel characterized by being.
The invention according to claim 6 is a camera-side communication unit that can be mounted with the lens barrel according to any one of claims 1 to 5 and communicates with the communication unit in the lens barrel. And a camera control unit that transmits the continuous shooting information to the control unit of the lens barrel via the camera side communication unit.

  According to the present invention, it is possible to provide a lens barrel and a camera that enable quick driving of the aperture mechanism and improve the continuous shooting speed.

It is a figure which shows notionally the camera comprised by mounting | wearing the camera main body with the lens-barrel which is one Embodiment of this invention. It is a timing chart of the operation of the camera during continuous shooting. It is a timing chart of the operation of the camera during continuous shooting. It is a main flowchart of the drive control with respect to the aperture motor unit by a lens microcomputer. It is a flowchart of the normal control with respect to the aperture motor unit by a lens microcomputer. It is a flowchart of initial control at the time of continuous shooting in high-speed drive control for the aperture motor unit 2 by the lens microcomputer. It is a flowchart of the continuous shooting continuation control in the high-speed drive control for the aperture motor unit by the lens microcomputer.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram conceptually showing a camera configured by mounting a lens barrel 20 according to an embodiment of the present invention on a camera body 10.
The camera 1 includes a camera body 10 and a lens barrel 20 that can be attached to and detached from the camera body 10.

In a state where the lens barrel 20 is coupled to the camera body 10, the contact 19 of the camera body 10 comes into contact with the contact 29 of the lens barrel 20 so that energization is possible, and the camera microcomputer 18 of the camera body 10 and a power source (not shown) are connected to the lens barrel. 20 is connected to a lens microcomputer 26 described later.
As a result, power supply from the camera body 10 to the lens barrel 20 can be supplied, and control information is communicated between the camera microcomputer 18 of the camera body 10 and the lens microcomputer 26 of the lens barrel 20. The lens barrel 20 can be controlled by the camera microcomputer 18 of the camera body 10 via the lens microcomputer 26.
Information transmitted from the camera microcomputer 18 to the lens microcomputer 26 of the lens barrel 20 includes setting information related to the continuous shooting mode and operation information of the release button 17, and these are the diaphragms performed by the lens microcomputer 26 described later. It is used as control information for high-speed drive control for the motor unit 24.

  The camera body 10 is a so-called digital single-lens reflex camera, and includes an image sensor 11 that converts a light image into an electrical signal, a finder optical system 12, a mirror mechanism 13 that includes a quick return mirror 13M, and a shutter that defines an exposure time. A mechanism 14, a photometric unit 15, a distance measuring unit 16, a release button 17 for instructing photographing, a camera microcomputer 18 that performs overall control of the camera 1 including the camera body 10 and a lens barrel 20 to be described later. Has been. The present invention is not limited to a digital single lens reflex camera.

In the shooting standby state shown in FIG. 1, the mirror mechanism 13 guides the subject image light collected by the lens barrel 20 to the finder optical system 12 in the quick return mirror 13M, and the quick return mirror 13M shutters the subject image light during shooting. It swings to a retracted position where it can enter the mechanism 14 and the image sensor 11.
The photometry unit 15 detects the amount of subject image light incident on the finder optical system 12 and outputs the detected value to the camera microcomputer 18.

The distance measuring unit 16 is a distance measuring means for autofocus, detects the amount of focus deviation to the subject by, for example, a phase difference detection method, and outputs the detected value to the camera microcomputer 18.
The release button 17 is configured in two stages, half-pressed and fully-pressed, and commands metering and AF when pressed halfway and commands shooting when pressed fully.

When the release button 17 is pressed by the user, the camera body 10 is controlled by the camera microcomputer 18 and performs the shooting operation from the shooting standby state shown in FIG. 1 as follows.
In the photographing standby state shown in FIG. 1, the quick return mirror 13M in the mirror mechanism 13 guides the subject image light condensed by the lens barrel 20 to the finder optical system 12.

  When the release button 17 is pressed halfway from this shooting standby state, the camera microcomputer 18 determines the shutter speed and the aperture value based on the detection result by the photometry unit 15, and the detection value input from the distance measurement unit 16. Based on the above, the lens microcomputer 26 of the lens barrel 20 described later is instructed to drive the AF unit 22 to bring it into a focused state. At this time, the camera microcomputer 18 opens the aperture blade 23 of the lens barrel 20.

When the release button 17 is fully pressed, the camera microcomputer 18 instructs a lens microcomputer 26 of the lens barrel 20 to be described later to drive its aperture blade 23 to the determined aperture value, and then in the mirror mechanism 13. The quick return mirror 13M is moved to the retracted position (mirror-up), the shutter mechanism 14 is opened and closed, the subject image light is exposed to the image sensor 11 for a predetermined time, and the subject image light is converted into an electrical signal by the image sensor 11 and imaged. To do.
Then, the camera microcomputer 18 performs image processing on the image data captured by the image sensor 11 and records it in a recording unit (not shown). After the photographing is completed, the camera microcomputer 18 returns the quick return mirror 13M in the mirror mechanism 13 and instructs the lens microcomputer 26 of the lens barrel 20 to return the aperture blade 23 to the open state.

Next, the lens barrel 20 will be described.
The lens barrel 20 includes a plurality of lens groups 21 including a focusing lens 21F constituting an imaging optical system, an AF unit 22 having a driving mechanism for moving the focusing lens 21F in the direction of the optical axis OA, and a camera body. A diaphragm blade 23 that adjusts the amount of light incident on the lens 10, a diaphragm motor unit 24 that drives the diaphragm blade 23 with a stepping motor, an EEPROM 25 that stores various information about the lens barrel 20, and all of the lens barrel 20 And a lens microcomputer 26 which is a circuit for controlling the control.

  The lens microcomputer 26 includes a CPU, a timer 26T, a memory 21M, and the like. The lens microcomputer 26 is connected to the camera microcomputer 18 of the camera body 10 when the contact point 29 of the lens barrel 20 contacts the contact point 19 of the camera body 10, and communicates control information with the camera microcomputer 18.

  Then, the lens microcomputer 26 transmits specific information regarding the lens barrel 20 stored in the EEPROM 25 to the camera microcomputer 18 as control information, and each functional unit of the lens barrel 20 based on a command from the camera microcomputer 18. To control. For example, the lens microcomputer 26 moves and drives the focusing lens 21F via the AF unit 22 based on an instruction from the camera microcomputer 18 during the AF operation, and stops it. Further, at the time of photographing, the aperture blade 23 is driven to a predetermined aperture value by the aperture motor unit 24.

Here, when the camera body 10 is set to the continuous shooting mode, the lens microcomputer 26 in the present embodiment uses the diaphragm motor unit 24 that drives the diaphragm blades 23 based on command information from the camera body 10. On the other hand, high-speed drive control is performed.
This high-speed drive control is based on energization (pre-excitation) for initial positioning before driving the diaphragm motor unit 24 and vibration suppression at the stop based on the setting information related to the continuous shooting mode and the operation information of the release button 17. The lens microcomputer 26 independently controls the timing of energization (post-excitation) so that the aperture motor unit 24 can be driven quickly.

Next, high speed drive control for the aperture motor unit 24 will be described with reference to FIGS.
2 and 3 are timing charts of the operation of the camera 1 during continuous shooting.
FIG. 4 is a main flowchart of drive control for the aperture motor unit 24 by the lens microcomputer 26.
FIG. 5 is a flowchart of normal control for the aperture motor unit 24 by the lens microcomputer 26.
FIG. 6 is a flowchart of the initial control during continuous shooting in the high-speed drive control for the aperture motor unit 24 by the lens microcomputer 26.
FIG. 7 is a flowchart of continuous shooting continuation control in high-speed drive control for the aperture motor unit 24 by the lens microcomputer 26.
In the drawings and the following description, “step” is also abbreviated as “S”. Also, refer to FIG.

First, drive control for the aperture motor unit 24 by the lens microcomputer 26 will be described along the main flowchart shown in FIG.
First, the lens microcomputer 26 reads the continuous shooting setting (single shooting mode or continuous shooting mode) in the camera body 10 from the camera microcomputer 18 in the camera body (S401).

Next, it is determined whether or not the setting in the camera body 10 is the continuous shooting mode (S402).
If it is determined in step 402 that the setting is not the continuous shooting mode (No), normal control (detailed later) is performed assuming that the mode is the single shooting mode (S403).

On the other hand, if it is determined in step 402 that the setting is the continuous shooting mode (Yes), initial control during continuous shooting is performed (S404).
Although the initial control at the time of continuous shooting will be described in detail later, it corresponds to the first shooting at the time of continuous shooting, measures exposure time information for continuous shooting control described later, and after the first shooting. In this control, the post-excitation is continued without ending when the aperture for the second image is opened. As a result, when receiving a narrowing-down command at the time of shooting the second image from the camera body 10, it becomes possible to quickly perform the narrowing-down drive.

  Thereafter, it is determined whether or not the continuous shooting command is continued (continuation of pressing of the release button 17) (S405), and when it is determined that the continuous shooting command is not continued (No), the aperture for the second image is determined. The post-excitation at the time of opening is terminated (S406), and the initial control at the time of continuous shooting at step 404 is returned.

  If it is determined in step 405 that the continuous shooting command is continued (Yes), continuous shooting continuation control is executed (S407), and the continuous shooting command is continued (continuation of pressing of the release button 17). (S408), and if it is determined that the command for continuous shooting is continued (Yes), the continuous shooting continuation control is repeated.

Although continuous shooting continuation control will be described in detail later, the aperture opening command timing from the camera body 10 upon completion of the exposure for the second image is predicted based on the exposure time information acquired by the initial control during continuous shooting, and before the aperture is opened. This is the control to start excitation.
The exposure time information is sequentially updated during the continuous shooting continuation control. Accordingly, when an aperture opening command is received from the camera body 10 for photometry and distance measurement for the next shooting, it becomes possible to quickly perform aperture opening driving.

  If it is determined in step 408 that the command for continuous shooting is not continued (Yes), post-excitation at the time of opening the aperture is terminated (S406), and the initial control at the time of continuous shooting in step 404 is returned.

  Next, normal control for the aperture motor unit 24 by the lens microcomputer 26 will be described along the flowchart shown in FIG. 5 with reference to the timing chart of the operation of the camera 1 shown in FIGS. Although FIG. 2 and FIG. 3 are continuous in time, the items of AF metering, AF driving, and mirror shown in FIG. 2 are omitted in FIG. 3 in order to avoid complexity. The display items are also different.

The normal control is a sequential control as described below, and the timing chart shown in the lowermost stage in FIG. 2 corresponds to this.
Step 501: A narrowing-down command is input from the camera body 10. As shown in FIG. 2, this narrowing-down command is issued on condition that the release button 17 is fully pressed and AF photometry detection and AF distance detection end.
Step 502: Start pre-excitation before narrowing down and execute a predetermined time: T1.
Step 503: After the excitation before the narrowing is completed, the narrowing drive is executed.

Step 504: After the narrowing is completed, narrowing completion information is transmitted to the camera body 10. Thereby, in the camera body 10, as shown in FIG. 2, the quick return mirror 13M starts to be retracted (mirror up) in the mirror mechanism 13, and when the quick return mirror 13M is retracted, the image is taken (the shutter mechanism 14 is opened). Starts exposure to the image sensor 11 and reading of subject image light).
Step 505: Excitation is started after narrowing down, and a predetermined time: T2 is executed to stop excitation (energization).

Step 506: An aperture opening command is input from the camera body 10. As shown in FIG. 2, this aperture opening command is issued at the end timing of exposure. In the camera body 10, the quick return mirror 13 </ b> M starts to be restored (mirror down) at the same time.
Step 507: Start pre-excitation before opening the aperture and execute a predetermined time: T1.
Step 508: After the excitation before opening the diaphragm, the diaphragm opening drive is executed.

Step 509: After the aperture opening is completed, the aperture opening completion information is transmitted to the camera body 10. Thereby, as shown in FIG. 2, the camera body 10 can start the second AF photometric detection and AF distance detection.
Step 510: Excitation is started after the aperture is opened, and excitation (energization) is stopped for a predetermined time: T2.

  In FIG. 2, the shooting operation for the second frame is started continuously. However, in this flowchart, since the single shooting is supported, the control is completed. Even in the continuous shooting mode, this normal control may be performed continuously if a high continuous shooting speed is not required.

Next, referring to the timing chart of the operation of the camera 1 shown in FIGS. 2 and 3, the initial control during continuous shooting for the aperture motor unit 24 by the lens microcomputer 26 will be described along the flowchart shown in FIG.
The initial control at the time of continuous shooting is control in which exposure time information for continuous shooting continuous control is added to the above-described normal control, and post-excitation is not terminated when the aperture is opened after shooting.

Step 601: A narrowing-down command is input from the camera body 10. As shown in FIG. 2, this narrowing-down command is issued on condition that the release button 17 is fully pressed and AF photometry detection and AF distance detection end.
Step 602: Pre-excitation before narrowing is started, and a predetermined time: T1 is executed.
Step 603: After the excitation before the narrowing is completed, the narrowing drive is executed.

Step 604: After the narrowing is completed, narrowing completion information is transmitted to the camera body 10. Thereby, in the camera body 10, as shown in FIG. 2, the quick return mirror 13M starts to be retracted (mirror up), and when the retract is completed, imaging (exposure to the image sensor 11 by opening the shutter mechanism, subject image) Start reading light.
Step 605: Reset the timer 26T (T = 0) and start counting time.
Step 606: Excitation is started after narrowing down, and excitation (energization) is stopped for a predetermined time: T2.

Step 607: An aperture opening command is input from the camera body 10. As shown in FIG. 2, this aperture opening command is issued at the end timing of exposure. In the camera body 10, the quick return mirror 13 </ b> M starts to be restored (mirror down) at the same time.
Step 608: Time T3 measured by the timer 26T until the aperture opening command is input: T3 is stored in the memory 26M. Although the measurement time at this time does not exactly match the exposure time, it becomes exposure time information for predicting the exposure end timing (that is, aperture opening) for the second sheet and starting pre-excitation.

Step 609: Start pre-excitation before opening the aperture and execute T1 for a predetermined time.
Step 610: After the excitation before opening the diaphragm, the diaphragm opening drive is executed.
Step 611: After the aperture opening is completed, aperture opening completion information is transmitted to the camera body 10. As shown in FIG. 2, the aperture opening completion information serves as a start trigger for the second AF photometric detection and AF distance detection in the camera body 10.
Step 612: Excitation is started after the aperture is opened.

In the initial control during the continuous shooting, the post-excitation at the time of opening the aperture after the first image is taken is continued without being terminated. Thus, the aperture driving can be performed immediately upon receiving the aperture command from the camera body 10 at the time of exposure of the second image. Compared to the case where the pre-excitation is started after receiving the aperture command, the pre-excitation is performed. It becomes possible to advance the completion of the narrowing down by the time (T1) required (time: Ft in FIG. 2).
Considering only the excitation factor of the aperture motor unit 24, the duration time for opening the aperture can be shortened to the time for which the excitation after the aperture is opened and the excitation before the aperture is overlapped.
For example, when 20 μs is required for the pre-excitation (T1) and 10 μs is required for the post-excitation (T2), the two can be overlapped to 20 μs. Note that the aperture opening time shown in FIG. 2 is such that the pre-excitation: T1 and the post-excitation T2 continue substantially in series.

Next, continuous shooting continuation control for the aperture motor unit 24 by the lens microcomputer 26 will be described along the flowchart shown in FIG. 7 with reference to a timing chart of the operation of the camera 1 shown in FIG.
In the continuous shooting continuation control, the measurement time: T3 in the above-described initial control at the time of continuous shooting is used as exposure time information, and the end of exposure (that is, aperture opening) on the second sheet is predicted as the same timing.
In continuous shooting, since it is rare that the brightness of the subject suddenly changes greatly, the start of pre-excitation may be performed based on this predicted exposure end timing. : Allowing a margin before T1 (T1 × 2), thereby responding to errors in exposure time information and changes in exposure time.

Step 701: A narrowing-down command is input from the camera body 10. As shown in FIG. 2, this narrowing-down command is issued on the condition that the release button 17 is fully pressed and AF photometric detection and AF distance detection are completed. Although not shown in FIG. 3, the quick return mirror 13M in the camera body 10 is already in the retracted (mirror up) state.
Step 702: A narrowing drive is executed. Since excitation (energization) has been continued from the above-described initial control at the time of continuous shooting preceding this control, pre-excitation for narrowing down is unnecessary.
Step 704: Reset the timer 26T (T = 0) and start measuring time. This is for updating the exposure time information for the next shooting.

Step 705: Start excitation after narrowing down.
Step 706: The exposure time information stored in the memory 26M: T3 and the value obtained by adding the post-excitation time: T2 to twice the pre-excitation time: T1 (2 × T1) are compared.
That is, T3> 2 × T1 + T2 is determined.
In this case, when the pre-excitation is started before the pre-excitation time: T1 times (T1 × 2) before the predicted exposure end timing, it is determined whether or not there is a margin for stopping the excitation (in the case of No). (Excitation is continued).

If it is determined No in step 706, the present control is terminated while continuing the post-excitation, and if it is determined Yes, the process proceeds to step 707.
Step 707: Excitation is terminated after narrowing down.
Step 708: Judge T3 = 2 × T1 + T2, and if yes, go to Step 709. This is a judgment to start pre-excitation before the pre-excitation time: twice the pre-excitation time: T1 (T1 × 2) before the predicted exposure end timing.

Step 709: Start pre-excitation before opening the aperture.
Step 710: An aperture opening command is input from the camera body 10. This aperture opening command is issued at the end timing of exposure as shown in FIG. Further, in the camera body 10, although not shown in FIG. 3, the quick return mirror 13M is started to return (mirror down) at the same time.

Step 711: Update the measurement time T3 by the timer 26T stored in the memory 26M. The updated measurement time becomes exposure time information for predicting the exposure end (that is, aperture opening) timing in the next shooting and starting the pre-excitation.
Step 712: Aperture opening drive is executed. Since the pre-excitation is started in step 709, it can be executed immediately.
Step 713: After completion of the aperture opening, the aperture opening completion information is transmitted to the camera body 10.
Step 714: Excitation is started after the aperture is opened.

The continuous shooting continuation control predicts the exposure end timing (equal to the aperture opening command timing from the camera body 10) based on the exposure time information measured during the previous shooting (including the first frame). To start pre-excitation. As a result, it is possible to perform aperture opening drive immediately upon receiving the aperture opening command from the camera body 10, and from the completion of aperture reduction to the start of aperture opening driving as compared with the case where pre-excitation is started after receiving the aperture opening command. The time required for pre-excitation can be shortened by T1.
In FIG. 3, the time required from the completion of the narrowing down to the start of the full aperture driving is a shortened Wtn (= Wt−T1) with respect to the time: Wt in the comparative example shown at the bottom in FIG.

  Similarly to the above-described initial control at the time of continuous shooting, the post-excitation at the time of aperture opening driving after shooting is continued without being terminated, and immediately after receiving a stop command from the camera body 10 at the time of the next shooting exposure. The narrowing-down drive is enabled, thereby shortening the narrowing-down completion time.

  According to the high-speed drive control for the aperture motor unit 24 as described above, it is possible to quickly perform the aperture drive from the aperture opening between successive photographing, and to perform the aperture opening drive quickly after exposure. Thereby, compared with the case where the normal control shown in the lowermost stage in FIG. 3 is continuously performed, the exposure of the second image can be accelerated by time: St2 (time shown in FIG. 2: equal to Ft). At the same time, it is possible to advance the exposure time for the third image by time: St3 (= St2 + T1). As a result, the continuous shooting speed can be improved.

As described above, this embodiment has the following effects.
(1) According to the present embodiment, the lens microcomputer 26 in the lens barrel 20 applies to the aperture motor unit 24 based on the setting information related to the continuous shooting mode from the camera body 10 and the operation information of the release button 17. The timing of energization (initial excitation) for initial positioning before driving and energization (post-excitation) for vibration suppression at stop is independently controlled at high speed. Accordingly, the aperture motor unit 24 (aperture blade 23) can be driven quickly without depending on the control of the camera body 10, and the continuous shooting speed can be improved.

(2) According to the high-speed drive control for the aperture motor unit 24 by the lens microcomputer 26 in the lens barrel 20 of the present embodiment, the aperture opening for the photometry and distance measurement after the n-th (including the first) image is taken. By not ending the post-excitation at that time, it is possible to perform the aperture driving immediately upon receiving the aperture command from the camera body 10 during the exposure of the (n + 1) th sheet. As a result, it is possible to accelerate the completion of the narrowing compared to the case where the pre-excitation is started after receiving the narrowing command, and as a result, the continuous shooting speed can be improved.

(3) At the time of photographing the nth image, the aperture opening timing at the end of exposure is predicted based on the exposure time information acquired at the time of photographing the (n-1) th image, and excitation before opening the aperture is started. Thereby, it is possible to perform the aperture opening drive immediately upon receiving the aperture opening command from the camera body 10, and from the completion of the aperture stop to the opening of the aperture opening compared to when starting the pre-excitation after receiving the aperture opening command. You can save time. As a result, the continuous shooting speed can be improved.

(Deformation)
The present invention is not limited to the above-described embodiment, and various modifications and changes as described below are possible, and these are also within the scope of the present invention.
(1) In this embodiment, the present invention is made to correspond to the camera 1 having two modes of single shooting and continuous shooting, but the shooting mode is not limited to this. For example, the continuous shooting mode may include two modes of high-speed continuous shooting and low-speed continuous shooting, and the present invention may be applied only to the high-speed continuous shooting. Further, not limited to the setting, the application of the high-speed drive control may be configured to be manually settable.

  Furthermore, a power saving mode is provided so that the present invention is not applied in the power saving mode, or the application of the present invention is switched depending on the remaining battery level (not applied when the remaining battery level is low). The present invention may not be applied at low temperatures when the battery capacity is low.

(2) In the above embodiment, the present invention is applied to a configuration in which the diaphragm blades are driven by a stepping motor. However, the present invention is not limited to a stepping motor, and can be applied to other configurations using a drive unit that requires excitation prior to driving.
In addition, although embodiment and a deformation | transformation form can also be used combining suitably, detailed description is abbreviate | omitted. Further, the present invention is not limited to the embodiment described above.

  1: camera, 10: camera body, 18: camera microcomputer, 19: contact, 20: lens barrel, 23: aperture blade, 24: aperture motor unit, 26: lens microcomputer 26T: timer, 29: contact

Claims (6)

A lens barrel attached to the camera body,
A light quantity adjusting member capable of adjustment amount of light incident on the camera body,
A drive unit that drives the light amount adjusting member using electromagnetic force ;
A control unit for controlling the energization of the front SL driver,
A communication unit connected to the camera body for communication,
The control unit continues energization of the drive unit between continuous shooting operations during continuous shooting based on continuous shooting information input via the communication unit;
A lens barrel characterized by A lenses barrel is attached to the camera body,
A light amount adjusting member capable of adjusting the amount of light incident on the camera body;
A drive unit that drives the light amount adjusting member using electromagnetic force;
A control unit for controlling energization to the drive unit;
A communication unit connected to the camera body for communication;
Wherein, based on the continuous shooting information inputted via the communication unit, predicts the timing of driving instruction of the light amount adjustment member which is input through the communication unit at the time of continuous shooting, the predicted be from the timing starts energizing the predetermined time earlier the drive unit,
A lens barrel characterized by The lens barrel according to claim 2 ,
The control unit includes a timing unit that acquires exposure time-related information in the camera body, and based on the exposure time-related information at the time of previous shooting acquired by the timing unit, the timing of the drive instruction of the light amount adjustment member Making predictions,
A lens barrel characterized by The lens barrel according to any one of claims 1 to 3 ,
The continuous shooting information is continuous shooting mode information set in the camera body;
A lens barrel characterized by The lens barrel according to any one of claims 1 to 3 ,
The continuous shooting information is continuation information of a shooting command input via the communication unit;
A lens barrel characterized by The lens barrel according to any one of claims 1 to 5 , wherein the lens barrel can be mounted, is connected to a communication unit in the lens barrel, and performs communication via the camera side communication unit. A camera control unit that transmits the continuous shooting information to the control unit of the lens barrel;
Comprising a camera.

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