JP2012185289A - Camera system, lens barrel, and camera body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera system able to easily set a drive range of a lens according to a photographic mode.SOLUTION: The camera system (1) according to the present invention comprises a lens barrel (20) and a camera body (10). The lens barrel includes a lens control part (200) that transmits information about a photographable range of an optical system (210) to the camera body and restricts a drive range of a movable lens by a drive part on the basis of information about the drive range of the movable lens according to a photographic mode, which has received from the camera body. The camera body includes a camera control part (100) that determines the drive range of the movable lens on the basis of the information about the photographic mode and the photographable range of the optical system received from the lens barrel, and transmits the information about the drive range of the movable lens to the lens barrel.

Description

  The present invention relates to a camera system, a lens barrel, and a camera body.

  2. Description of the Related Art Conventionally, in an AF (autofocus) camera, a lens is driven to focus on a subject to be photographed by matching the distance measuring area displayed in the viewfinder with the subject to be photographed. However, if the distance measurement area deviates even slightly from the subject to be photographed, the focus position moves to the near side or infinity side, and it takes time to focus on the subject again.

  In view of this, there has been proposed a camera that includes a switch for setting a lens driving range (closest side, infinity side) and allows a photographer to set a desired driving range (see, for example, Patent Document 1). In addition, a camera has been proposed in which when the close-up mode is selected, the lens driving range is set in the vicinity of the closest side (see, for example, Patent Document 2).

JP-A-11-52216 JP 2001-212369 A

  The camera of Patent Document 1 described above requires the photographer himself to set the lens driving range, which complicates the operation of the camera. Further, in the camera of Patent Document 2, the lens drive range cannot be set in a shooting mode other than the close-up mode.

  An object of the present invention is to provide a camera stem, a lens barrel, and a camera body capable of easily setting a lens driving range in accordance with a shooting mode.

One embodiment of the present invention solves the above problems by the following means. In addition, in order to make an understanding easy, although the code | symbol corresponding to embodiment of this invention is attached | subjected and demonstrated, it is not limited to this.
In one embodiment of the present invention, an optical system (210) in which at least a part of the movable lens (211) is movable along the optical axis direction, a drive unit (220, 230, 240) for driving the movable lens, and the optical A shootable distance storage unit (270) that stores information related to the shootable range of the system, a first transmitter (200) that transmits information related to the shootable range of the optical system to the camera body, and a transmission from the first transmitter. A first receiving unit (200) for receiving information on the driving range of the movable lens according to the shooting mode determined in the camera body based on the information on the shooting range of the optical system. A driving range storage unit (270) for storing information relating to the driving range of the movable lens received in step S1, and a driving range of the movable lens stored in the driving range storage unit. A lens barrel (20) having a control unit (200) for restricting a driving range of the movable lens by the driving unit, and a subject image formed by a lens barrel having an optical system An image pickup unit (110) that picks up an image, a shooting mode setting unit (100) that sets at least one shooting mode from a plurality of shooting modes, and a second reception that receives information about the shooting distance of the optical system from the lens barrel. Unit (100), based on the shooting mode set in the shooting mode setting unit and information on the shooting range of the optical system received from the lens barrel, the shooting mode of the movable lens included in the optical system is changed to the shooting mode. A driving range determination unit (100) for determining a corresponding driving range, and a driving range of the movable lens determined by the driving range determination unit Second transmitting unit that transmits broadcast to the lens barrel and the camera body (10) having a (100), a camera system characterized by comprising a (1).
One embodiment of the present invention is a lens barrel that is detachable from a camera body, and includes an optical system (210) in which at least a part of the movable lens (211) is movable along the optical axis direction, and the movable lens. A drive unit (220, 230, 240) for driving, a shootable distance storage unit (270) for storing information relating to the shootable range of the optical system, and information relating to the shootable range of the optical system for the camera body. Transmitting unit (200) for transmitting, and receiving information on driving range of movable lens according to shooting mode determined in camera body based on information on shooting range of optical system transmitted from transmitting unit Receiving section (200), driving range storage section (270) for storing information relating to the driving range of the movable lens received by the receiving section, and the driving range The stored in 憶部 based on the information on the driving range of the movable lens, and a control unit for regulating the driving range of the movable lens by the driving unit (200), characterized in that it comprises a.
One embodiment of the present invention is a lens barrel that is detachable from a camera body, and includes an optical system (210) in which at least a part of the movable lens (211) is movable along the optical axis direction, and the movable lens. A drive unit for driving (220, 230, 240), a shootable distance storage unit (270) for storing information relating to a shootable range of the optical system, and a receiving unit (200) for receiving a shooting mode from the camera body; Based on the imaging mode received by the receiving unit, a driving range determination unit (200) that determines information related to the driving range of the movable lens according to the imaging mode, and the movable that is determined by the driving range determination unit A driving range storage unit (270) that stores information relating to the driving range of the lens, and information related to the driving range of the movable lens that is stored in the driving range storage unit. Te, characterized in that it comprises a control unit (200) for regulating the driving range of the movable lens by the driving unit.
One aspect of the present invention is a camera body in which a lens barrel having an optical system is detachable, and includes an imaging unit (110) that captures a subject image formed by the lens barrel, and a plurality of shooting modes. A shooting mode setting unit (100) for setting at least one shooting mode, a receiving unit (100) for receiving information relating to the shooting distance of the optical system from the lens barrel, and the setting set in the shooting mode setting unit A drive range determination unit (100) that determines a drive range according to the shooting mode of the movable lens included in the optical system based on information about the shooting mode and the shooting range of the optical system received from the lens barrel. And a transmission unit (100) for transmitting information related to the driving range of the movable lens determined by the driving range determination unit to the lens barrel. The features.
One aspect of the present invention is a camera body in which a lens barrel having an optical system is detachable, and includes an imaging unit (110) that captures a subject image formed by the lens barrel, and a plurality of shooting modes. A shooting mode setting unit (100) for setting at least one shooting mode, a receiving unit (100) for receiving information relating to the shooting distance of the optical system from the lens barrel, and the setting set in the shooting mode setting unit A drive range determination unit (100) that determines a drive range according to the shooting mode of the movable lens included in the optical system based on information about the shooting mode and the shooting range of the optical system received from the lens barrel. And a storage unit that stores information on the drive range of the movable lens determined by the drive range determination unit in a storage medium.
Note that the configuration described with reference numerals may be modified as appropriate, and at least a part of the configuration may be replaced with another component.

  According to the present invention, it is possible to provide a camera stem, a lens barrel, and a camera body that can easily set a lens driving range according to a shooting mode.

It is a block diagram which shows the structure of the camera system 1 in embodiment. It is a perspective view when the camera system 1 is seen from the back side. FIG. 4 is a schematic diagram showing a driving range of a movable lens group 211 in the lens barrel 20. It is a flowchart which shows the process sequence in the case of determining the drive range of the lens barrel with which the camera system 1 of embodiment was mounted | worn according to imaging | photography mode.

Hereinafter, embodiments of a camera stem, a lens barrel, and a camera body according to the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a camera system 1 in the present embodiment. FIG. 2 is a perspective view of the camera system 1 when viewed from the back side.

  As shown in FIG. 1, the camera system 1 of this embodiment includes a camera body 10 as a camera body and a lens barrel 20. The camera system 1 is configured as an interchangeable lens digital camera in which a lens barrel 20 is detachably attached to a camera body 10.

  The camera body 10 includes a camera CPU 100, a photometry unit 101, a focus detection unit 102, a shutter unit 103, a shutter control unit 104, a liquid crystal monitor 105, a display panel 106, a memory card I / F unit 107, an imaging unit 110, and a camera data storage unit. 120 and an operation input unit 130. Further, when the mirror mechanism (not shown) is located at the closed position, the camera body 10 blocks the optical path to the shutter unit 103 side and transmits the subject light incident from the lens barrel 20 to the focus detection unit 102. Lead. Further, when the mirror mechanism (not shown) is located at the closed position, the camera body 10 guides the subject light to the photometry unit 101 via the pentaprism and also the subject from the viewfinder eyepiece unit 13 (see FIG. 2). Guides the subject light so that can be observed. The camera body 10 opens the optical path toward the shutter unit 103 when a mirror mechanism (not shown) is located at the open position.

  The camera CPU 100 is a control unit that controls the operation of the entire camera system 1 and is configured by a microprocessor. The camera CPU 100 controls each operation by reading and executing a program stored in the ROM 124 described later. The process shown in the flowchart (FIG. 4) described later is also implemented by reading and executing a program stored in the ROM 124 described later. The camera CPU 100 includes functions as a calculation unit that executes various calculations, a reception unit that receives various types of information, a transmission unit that transmits various types of information, a shooting mode setting unit, a drive range determination unit, and a drive range change unit.

  The camera CPU 100 calculates the driving amount of the lens based on the defocus amount detected by the focus detection unit 102 at the time of shooting. Then, the camera CPU 100 transmits a drive signal corresponding to the calculated drive amount to a lens CPU 200 (described later) of the lens barrel 20. The camera CPU 100 also measures the photometric information of the subject acquired by the photometry unit 101, the type of lens transmitted from the lens CPU 200 of the lens barrel 20 when the lens barrel 20 is attached, the open F value, the focal length, and the like. In addition to the lens information, an appropriate exposure value is calculated based on sensitivity information set by a sensitivity setting unit (not shown). Then, the camera CPU 100 selects an aperture value and a shutter speed value corresponding to the exposure value, and transmits the aperture value to the lens CPU 200 of the lens barrel 20. In addition, the camera CPU 100 transmits a shutter speed value to the shutter control unit 104.

  In addition, the camera CPU 100 displays a still image or a moving image of the subject image captured by the imaging unit 110 on the display screen of the liquid crystal monitor 105 in the playback mode, the moving image capturing mode, the still image capturing mode, and the like.

  Further, the camera CPU 100 communicates with the lens CPU 200 of the lens barrel 20 attached to the camera body 10 using an electrical signal. At this time, the camera CPU 100 receives from the lens barrel 20 information such as the type of lens, the open F value, the focal length of the optical system 210 (described later), the information about the imageable range of the optical system 210 (described later), and the like.

  Further, when the user sets a shooting mode with the lens barrel 20 attached to the camera body 10, the camera CPU 100 sets a movable lens group 211 (described later) in the lens barrel 20 according to the shooting mode. The driving range is determined. That is, the camera CPU 100 captures the photographing mode acquired by the operation input unit 130, information on coefficients set according to the photographing mode (described later), and the photographing range of the optical system 210 received from the attached lens barrel 20. The driving range of the movable lens group 211 in the lens barrel 20 is calculated on the basis of the information related to the lens barrel 20 (in this embodiment, “driving range is determined”). In the present embodiment, the driving range of the movable lens group 211 is obtained by calculation, but the present invention is not limited to this. For example, as will be described later, when the camera CPU 100 receives information on the recommended drive range of the movable lens group 211 from the lens CPU 200, it stores it in the camera data storage unit 120 as the drive range of the movable lens group 211. Also good. As described above, in the present embodiment, the camera CPU 100 also uses the “driving range” when using information about the driving range prepared in advance or selecting one of the information about the driving range prepared in advance. Is determined. " In the present embodiment, storing information regarding the determined driving range of the movable lens group 211 in the lens data storage unit 270 is referred to as “setting the driving range”. A specific example of determining the driving range of the movable lens group 211 will be described in detail later.

  The camera CPU 100 drives the movable lens group 211 determined according to the shooting mode acquired by the operation input unit 130, information about the shooting range of the optical system 210 received from the attached lens barrel 20, and the shooting mode. Information regarding the range is stored in the camera data storage unit 120. At this time, the camera CPU 100 can also display the determined driving range of the movable lens group 211 on the liquid crystal monitor 105 as described later. Note that information regarding the coefficient set according to the shooting mode is stored in the camera data storage unit 120 in advance.

  In addition, the camera CPU 100 transmits information regarding the driving range of the movable lens group 211 stored in the camera data storage unit 120 to the lens barrel 20.

  The photometric unit 101 is composed of a color image sensor such as a CCD or CMOS. When the camera CPU 100 detects that a release button 132 (described later) is half-pressed by the user, the camera CPU 100 causes the photometry unit 101 to start photometry. The photometric unit 101 detects information (photometric information) related to the luminance of the subject light. The photometry unit 101 transmits the detected photometry information to the camera CPU 100. The camera CPU 100 uses the photometric information detected by the photometric unit 101 for strobe light control, white balance control, etc. in addition to exposure calculation.

  The focus detection unit 102 detects the defocus information based on the subject light incident from the lens barrel 20 using, for example, a phase difference detection method. The focus detection unit 102 of the present embodiment detects a focus position of a lens (focus adjustment lens group) on which a subject image captured in a plurality or a single distance measurement area (not shown) in the screen is focused. The focus detection unit 102 transmits the detected defocus amount at the in-focus position to the camera CPU 100 as defocus information.

  The shutter unit 103 is disposed on the front side of the subject direction (left side in FIG. 1) of the imaging unit 110. The shutter unit 103 drives (opens and closes) shutter blades (not shown) to cause the image sensor 111 to expose subject light.

  The shutter control unit 104 is a part that drives the shutter unit 103. The operation of the shutter control unit 104 is controlled by the camera CPU 100. When the camera CPU 100 detects that the release button 132 has been fully pressed by the user, the camera CPU 100 controls the shutter control unit 104 to drive the shutter unit 103. As a result, a subject image made up of subject light is captured by the imaging unit 110 as a captured image.

  The release button 132 has two operation states, a half-press operation and a full-press operation. The camera CPU 100 identifies and detects the state in which the release button 132 is half-pressed and the state in which the release button 132 is fully pressed. When the camera CPU 100 detects that the release button 132 is half-pressed by the user, the camera CPU 100 causes the photometry unit 101 to perform photometry for exposure control, and acquires photometric information. Then, the camera CPU 100 determines an exposure value according to the acquired photometric information. Further, when the camera CPU 100 detects that the release button 132 is half-pressed by the user, the camera CPU 100 causes the focus detection unit to perform distance measurement for focus adjustment, and acquires defocus information. Then, the camera CPU 100 calculates the driving amount of the lens (focusing lens) based on the acquired defocus information. Further, the camera CPU 100 transmits a driving signal (lens driving amount) for focus adjustment to the lens CPU 200.

  Further, when the camera CPU 100 detects that the release button 132 is fully pressed by the user, the camera CPU 100 positions a mirror mechanism (not shown) in the open position. In addition, the camera CPU 100 opens the shutter unit 103 via the shutter control unit 104 and controls the imaging unit 110 to capture a subject image. The captured image captured by the imaging unit 110 is recorded as image data for recording on a memory card 108 (described later) via the memory card I / F unit 107 in accordance with an instruction from the camera CPU 100. Note that these exposure control and focus adjustment procedures are merely examples, and the present invention is not limited to these examples.

  The imaging unit 110 includes an imaging element 111 and an image processing unit 112. The image sensor 111 is composed of a plurality of solid-state image sensors arranged in a plane. The subject image formed by the optical system 210 of the lens barrel 20 is received (imaged) by the light receiving surface of the solid-state imaging device and converted into an analog image signal. The analog image signal is subjected to A / D conversion (analog signal is converted into a digital signal) after the noise is removed by the image processing unit 112 based on an instruction from the camera CPU 100 and temporarily stored in the DRAM 123 (described later). Memorized. The image processing unit 112 performs image processing such as color interpolation processing, size change, and encoding on the digital image signal stored in the DRAM 123 to create image data for recording.

  The liquid crystal monitor 105 is a color liquid crystal display disposed on the back surface of the camera body 10. On the liquid crystal monitor 105, based on an instruction from the camera CPU 100, shooting information such as a shooting mode, an aperture value, and a shutter speed, a menu screen, a mode setting screen, a still image, a moving image, and the like are displayed. Further, the liquid crystal monitor 105 displays information on the driving range of the movable lens group 211 determined by the camera CPU 100 based on an instruction from the camera CPU 100.

  The display panel 106 is a liquid crystal panel disposed on the upper surface of the camera body 10. The display panel 106 displays mainly shooting information such as a shooting mode, an aperture value, and a shutter speed based on an instruction from the camera CPU 100.

  Display of image data, information screens, and the like on the liquid crystal monitor 105 and the display panel 106 is controlled by the camera CPU 100.

  The camera data storage unit 120 includes a VRAM 121, an EEPROM 122, a DRAM 123, and a ROM 124.

  The VRAM 121 is a memory that temporarily holds image data to be displayed on the liquid crystal monitor 105, and holds still image and moving image image data.

  The EEPROM 122 is a non-volatile memory that retains stored information even when the power of the camera body 10 is turned off, and stores input information such as user settings and custom settings. In addition, the EEPROM 122 stores information related to the shootable range of the optical system 210 in the mounted lens barrel 20, information related to the driving range of the movable lens group 211, and information related to the coefficient set according to the shooting mode.

  The DRAM 123 is a volatile memory from which stored information is erased when the camera body 10 is powered off. Here, in addition to the image signal image-processed by the image processing unit 112 and the image data for recording obtained by this image processing, data necessary for processing by the camera CPU 100 and the like are temporarily stored. Is done.

  The ROM 124 stores programs necessary for the operation and control of the camera body 10 as well as initial values and setting values necessary for executing the programs. A program corresponding to the process shown in the flowchart (FIG. 4) described later executed by the camera CPU 100 is also stored in the ROM 124.

  The operation input unit 130 includes a plurality of dials operated by the user. The user can input desired instruction contents to the camera CPU 100 by operating the dial of the operation input unit 130. The configuration of the operation input unit 130 will be described later. The camera CPU 100 detects the operation state of each operation member of the operation input unit 130 and executes various controls according to the detected state.

  A memory card I / F (interface) unit 107 is an image data writing / reading device. That is, the memory card I / F unit 107 has a function of recording the recording image data stored in the VRAM 121 on the memory card 108. The memory card I / F unit 107 has a function of reading image data recorded on the memory card 108. A memory card 108 corresponding to the standard is detachably attached to a memory card slot (not shown) of the memory card I / F unit 107.

  The camera body 10 includes a power supply circuit unit (not shown). The power supply circuit unit is a power supply device that supplies power output from a battery device (not shown) according to the operating status of each unit.

Next, the operation input unit 130 will be described. As shown in FIG. 2, the operation input unit 130 includes a mode dial 131, a release button 132, a main dial 133, a sub dial 134, a selector dial 135, a setting change button (not shown), and the like.
As shown in FIG. 2, on the upper surface of the camera body 10, a mode dial 131 capable of selecting a shooting mode, an automatic exposure mode, etc., a pop-up flash device (flash device) 11, a display panel 106, and a release button 132 are arranged. Has been. Further, when the camera body 10 is viewed from the back, a grip 12 is provided on the right side that is used when the user holds the camera body 10 during photographing.

  In the camera body 10 of the present embodiment, the user can set a desired shooting mode from a plurality of shooting modes by operating the mode dial 131. In the camera body 10 of the present embodiment, a normal shooting mode, a close-up mode, a distant view mode, and a snap mode can be set as shooting modes. The normal shooting mode is a general shooting mode used for shooting from a near view to a distant view. In the normal photographing mode, the range from the closest end to infinity is used as the photographing possible range. The close-up mode is a shooting mode that is used when a small subject in front of the user is photographed at a large size. In the close-up mode, the closest end side is mainly used as the photographing possible range. The distant view mode is a photographing mode used when photographing a subject in a distant place such as a scenery through a window or a landscape. In the distant view mode, the infinity side is mainly used as the shootable range. The snap mode is a shooting mode used when shooting a daily subject. In the snap mode, approximately 1.5 m to 5 m is used as a shootable range.

  As described above, the camera CPU 100 of the present embodiment functions as a shooting mode setting unit that sets a shooting mode when one shooting mode is set from a plurality of shooting modes by the user. Even when one shooting mode is automatically set from a plurality of shooting modes (for example, when the attached lens barrel 20 is a microlens, the camera CPU 100 sets the shooting mode). It functions as a part.

  On the other hand, a main dial 133 is disposed on the back surface of the camera body 10 and in the vicinity of the grip 12. A sub dial 134 is disposed on the front side of the camera body 10 and in the vicinity of the grip 12. These dials are used to set the exposure mode, input aperture value, shutter speed, exposure correction value, etc., but various functions can be set in combination with other buttons (not shown). .

  Further, on the back surface of the camera body 10, a viewfinder eyepiece 13 is disposed above the liquid crystal monitor 105. A selector dial 135 is arranged on the right side of the liquid crystal monitor 105. The selector dial 135 is a switch having electrode contacts (not shown) in the four directions of up, down, left and right and in the center.

When the user presses the arrow mark 135a engraved vertically and horizontally with a finger, the direction of the arrow mark 135a is input as the selection direction. Further, when the OK button 135b arranged at the center is pressed, it is input that it has been determined by the selection content at that time. The selector dial 135 is mainly used for changing the shooting conditions and the like displayed on the liquid crystal monitor 105, the display panel 106, etc., and for changing menu items and shot images. Further, the user can change the driving range of the movable lens group 211 determined by the camera CPU 100 by operating the selector dial 135 as described later. When the driving range of the movable lens group 211 is changed, the bar graph range indicating the driving range can be increased or decreased by pressing the left and right arrow marks 135a of the selector dial 135.
The bar graph shown in FIG. 3 can be displayed when the lens barrel 20 is mounted on the camera body 10 or by operating a setting change button (not shown) of the operation input unit 130.

Here, a specific example in which the camera CPU 100 determines the driving range of the movable lens group 211 in the attached lens barrel 20 will be described. FIG. 3 is a schematic diagram showing the relationship between the shootable range of the optical system 210 in the lens barrel 20 and the drive range of the movable lens group 211 determined according to the shooting mode.
As shown in FIG. 3, in the lens barrel 20 having a focal length (f) of 50 mm, the photographing range is from 0.5 m to infinity ∞.

  As described above, in the camera body 10 of the present embodiment, the shooting modes that can be set by the user operating the operation input unit 130 are the normal shooting mode, the close-up mode, the distant view mode, and the snap mode. .

  When the normal shooting mode is set as the shooting mode, the camera CPU 100 sets the range from the position corresponding to the closest end of the mounted lens barrel 20 to the position corresponding to infinity of the movable lens group 211. It is determined as the driving range. In this example, the range from the position corresponding to the closest side of 0.5 m to the position corresponding to the infinity side is determined as the driving range of the movable lens group 211.

  In addition, when the close-up mode, the distant view mode, or the snap mode is set as the shooting mode, the camera CPU 100 sets the movable lens group 211 so that the driving range is suitable for shooting in each set shooting mode. Determine the driving range. In the camera CPU 100 of the present embodiment, based on the shooting mode set by the user, information on the coefficient set according to the shooting mode, and information on the shooting range of the optical system 210 in the attached lens barrel 20. The driving range of the movable lens group 211 in the lens barrel 20 is determined. The above-described shooting mode set by the user, information about the coefficient set according to the shooting mode, and information about the shooting range of the optical system 210 in the attached lens barrel 20 are referred to as “shooting” in this embodiment. "Information about mode". Next, coefficients set according to the shooting mode will be described. Note that the coefficients and the imageable range described below are examples, and the present invention is not limited to these examples.

  In the close-up mode, it is assumed that the subject is nearby. For this reason, the drive range of the movable lens group 211 may be in the vicinity of the position corresponding to the closest end. Therefore, when the close-up mode is set, the camera CPU 100 multiplies the close-side coefficient by 1 and multiplies the close-side coefficient by a position corresponding to the close end to the close-side set value ( (Value indicating the end of the driving range). Further, when the close-up mode is set, the camera CPU 100 triples the coefficient at the infinity side, and multiplies the value at the position corresponding to the closest end by multiplying the coefficient at the infinity side at the infinity side. Calculated as a set value. Accordingly, the driving range of the movable lens group 211 in the close-up mode is 1.5 m (0.5 m × 3 times) from the position corresponding to 0.5 m (0.5 m × 1 time) as shown in FIG. Up to the corresponding position.

  In the distant view mode, it is assumed that the subject is far away. For this reason, the drive range of the movable lens group 211 may be in the vicinity of infinity. Therefore, when the distant view mode is set, the camera CPU 100 calculates a value obtained by multiplying the close-side coefficient by 10 times and multiplying the close-side coefficient by a position corresponding to the close end as a close-side set value. To do. In addition, when the distant view mode is set, the camera CPU 100 multiplies the coefficient at the infinity side by 1 and multiplies the infinity coefficient by the position corresponding to the infinity end to the set value at the infinity side. Calculate as Therefore, as shown in FIG. 3, the driving range of the movable lens group 211 in the distant view mode is from a position corresponding to 5 m (0.5 m × 10 times) to a position corresponding to infinity ∞.

  In the snap mode, it is assumed that the subject is relatively close. Therefore, when the snap mode is set, the camera CPU 100 calculates the value obtained by multiplying the close-side coefficient by 3 times and multiplying the close-side coefficient by the position corresponding to the close end as the close-side set value. To do. Further, when the snap mode is set, the camera CPU 100 multiplies the number at the infinity side by a factor of 10, and the value obtained by multiplying the infinity coefficient by the position corresponding to the closest end is the set value at the infinity side. Calculate as Therefore, the driving range of the movable lens group 211 in the snap mode is a position corresponding to 5 m (0.5 m × 10 times) from a position corresponding to 1.5 m (0.5 m × 3 times) as shown in FIG. Up to.

  The camera CPU 100 stores information on the driving range of the movable lens group 211 determined as described above in the camera data storage unit 120. Specifically, the camera CPU 100 records the close-side coefficient and the infinity-side coefficient set for each shooting mode in the EEPROM 122 of the camera data storage unit 120.

  In addition, the camera CPU 100 has a function of changing information regarding the driving range of the movable lens group 211 stored in the camera data storage unit 120 according to a user operation acquired by the operation input unit 130. That is, in the camera body 10 of the present embodiment, information related to the driving range of the movable lens group 211 determined by the camera CPU 100 is displayed on the display screen of the liquid crystal monitor 105. In the camera body 10 of the present embodiment, information on the driving range is displayed when the lens barrel 20 is attached to the camera body 10 or when a setting change button (not shown) of the operation input unit 130 is operated. Can do. Further, the driving range of the movable lens group 211 is displayed by, for example, a bar graph as shown in FIG. By operating the selector dial 135 while viewing the bar graph displayed on the liquid crystal monitor 105, the user can change the close side and the infinity side of the driving range in accordance with the shooting intention.

  The user can set the changed drive range as the drive range of the new movable lens group 211 in the lens barrel 20 by operating a predetermined button after changing the drive range of the movable lens group 211. it can. The camera CPU 100 stores information on the driving range of the movable lens group 211 changed by the user in the camera data storage unit 120.

  Further, when the camera CPU 100 receives information on the recommended drive range of the movable lens group 211 from the mounted lens barrel 20, the camera CPU 100 sets a shooting mode suitable for shooting with the lens barrel 20. The recommended drive range is determined as the drive range of the movable lens group 211 in the lens barrel 20. The recommended drive range is stored in advance in the lens data storage unit 270 as a preferable drive range suitable for photographing with the lens barrel 20.

  The camera CPU 100 that has received such information regarding the recommended drive range performs the following control. For example, it is assumed that the lens mounted on the camera body 10 is a micro lens for close-up photography, and the recommended driving range is 0.2 m on the near side and 1.0 m on the infinity side. In this case, when the close-up mode is set, the camera CPU 100 determines the closest side 0.2 m and the infinity side 1.0 m as the driving range of the movable lens group 211. Then, the camera CPU 100 transmits information regarding the determined driving range of the movable lens group 211 to the lens barrel 20.

  When the camera CPU 100 receives information on the recommended driving range of the movable lens group 211 from the attached lens barrel 20, the set shooting mode is not a shooting mode suitable for shooting with the lens barrel 20. First, the driving range of the movable lens group 211 is determined so as to be a driving range suitable for the set photographing mode. For example, in the camera CPU 100, when the mounted lens barrel 20 is a micro lens for close-up photography and information on the recommended driving range is received, the driving range is set to 2. 5m to infinity ∞.

  Furthermore, while the lens barrel 20 is mounted on the camera body 10, the camera CPU 100 holds information regarding the driving range of the movable lens group 211 stored in the camera data storage unit 120. That is, while the lens barrel 20 is attached to the camera body 10, even when the power of the camera body 10 is turned off, information regarding the driving range of the movable lens group 211 stored in the camera data storage unit 120 is retained. The On the other hand, when the lens barrel 20 is removed from the camera body 10, the information regarding the driving range of the movable lens group 211 stored in the camera data storage unit 120 is deleted even if the power of the camera body 10 is turned on. . Note that when the lens barrel 20 is detached from the camera body 10, the information regarding the drive range of the movable lens group 211 stored in the camera data storage unit 120 may be held as it is without being deleted.

  Next, the configuration of the lens barrel 20 will be described. As shown in FIG. 1, the lens barrel 20 includes a lens CPU 200, an optical system 210, a focus adjustment mechanism 220, an in-lens motor driver 230, an in-lens motor 240, an aperture unit 250, an aperture control unit 260, and a lens data storage unit 270. Is provided. The focus adjustment mechanism 220, the in-lens motor driver 230, and the in-lens motor 240 constitute a drive unit in the present embodiment.

  The lens CPU 200 is a control unit that controls the operation of the lens barrel 20 and includes a microprocessor. The lens CPU 200 mainly controls driving of the movable lens group 211 by the focus adjustment mechanism 220 and opening / closing of the diaphragm blades by the diaphragm unit 250. The lens CPU 200 has a function as a transmission unit that transmits various types of information to the camera body 10 and a reception unit that receives various types of information from the camera body 10.

  The lens CPU 200 controls the in-lens motor driver 230 based on the drive signal (lens drive amount) transmitted from the camera CPU 100. Thereby, the in-lens motor driver 230 controls the rotation amount of the in-lens motor 240. As a result, the focus adjustment mechanism 220 is driven by the in-lens motor 240, and the focus adjustment lens group (focusing lens) 211 of the optical system 210 moves to the focus position.

  The lens CPU 200 controls the aperture controller 260 based on the aperture value transmitted from the camera CPU 100. Thereby, the aperture controller 260 controls the opening and closing of the aperture blades in the aperture unit 250. As a result, an aperture having a size corresponding to the aperture value transmitted from the camera CPU 100 is formed as a subject light passage region.

  Furthermore, when the lens barrel 20 is attached to the camera body 10, the lens CPU 200 stores the lens type, open F value, focal length of the optical system 210, and imaging of the optical system 210 stored in the lens data storage unit 270. Information relating to the possible range is transmitted to the camera CPU 100 of the camera body 10. Here, the type of lens refers to a classification of a micro lens, a wide angle lens, a standard lens, a telephoto lens, and the like. Further, the information related to the shootable range of the optical system 210 refers to information related to the closest end (shortest shooting distance) and infinity of the optical system 210. For example, in the lens barrel 20 with a focal length (f) of 50 mm, as shown in FIG. 3, the range from 0.5 m to infinity ∞ is the imageable range. In addition, the lens CPU 200 stores information regarding the driving range of the movable lens group 211 transmitted from the camera CPU 100 in the lens data storage unit 270.

  Here, lens driving when the lens CPU 200 of the lens barrel 20 receives information about the driving range of the movable lens group 211 from the camera CPU 100 will be described.

  The camera CPU 100 transmits a pulse signal corresponding to the driving amount of the lens to the lens CPU 200 as a driving signal. The lens CPU 200 drives the movable lens group 211 according to the received number of pulses. The camera CPU 100 calculates the number of pulses on the near side (n pulses) and the number of pulses on the infinity side (m pulses, where n <m) as pulse information corresponding to the determined driving range of the movable lens group 211. The camera CPU 100 transmits these pieces of pulse information to the lens CPU 200 as information related to the driving range of the movable lens group 211.

  For example, it is assumed that the number of pulses corresponding to the driving range of the movable lens group 211 determined by the camera CPU 100 is 1000 pulses at the closest end and 0 (zero) pulse at infinity. In the normal shooting mode, the lens CPU 200 drives the movable lens group 211 between 0 and 1000 pulses.

  On the other hand, it is assumed that another shooting mode is set and pulse information of 300 pulses on the near side and 800 pulses on the infinity side is received from the camera CPU 100 as information on the driving range of the movable lens group 211. In this case, the lens CPU 200 drives the movable lens group 211 only between 300 to 800 pulses, and does not drive the movable lens group 211 in other ranges.

  Assume that the movable lens group 211 is at a position of 500 pulses. At this time, even if the lens CPU 200 receives from the camera CPU 100 a drive signal of 900 pulses that moves to the close side, the lens CPU 200 restricts the drive of the movable lens group 211 to 800 pulses. Therefore, the movable lens group 211 stops at the position of 800 pulses. Similarly, on the infinity side, even if the lens CPU 200 receives from the camera CPU 100 a driving signal of 200 pulses that moves to the infinity side, the lens CPU 200 restricts driving of the movable lens group 211 to 300 pulses. Therefore, the movable lens group 211 stops at the position of 300 pulses. The driving method of the movable lens group 211 is an example, and is not limited to the above-described example.

  Returning to FIG. 1 again, the configuration of the lens barrel 20 will be described. The optical system 210 is an optical member that refracts incident subject light and forms a subject image on the light receiving surface of the imaging unit 110 of the camera body 10 on the exit side. The optical system 210 includes a plurality of lens groups. Some of the lens groups constitute a movable lens group 211 as a movable lens movable in the optical axis direction for focus adjustment. In FIG. 1, the configuration of the optical system 210 is schematically shown.

  The focus adjustment mechanism 220 is a part that adjusts the focus position of the optical system 210 by moving the movable lens group 211 in the optical axis direction of the optical system 210. The focus adjustment mechanism 220 is driven by an in-lens motor 240. Information on the focal position when the optical system 210 moves in the optical axis direction is detected by a distance detection unit (not shown) and transmitted to the lens CPU 200. The movable lens group 211 is connected to a focus adjustment ring 22 (see FIG. 2) provided on the outer periphery of the lens barrel 20 by operating a changeover switch (not shown). In this case, the focus position can be adjusted by the user operating the focus adjustment ring 22.

  The in-lens motor 240 is a driving source that generates a driving force for driving the focus adjustment mechanism 220. The in-lens motor 240 is constituted by a DC motor, for example. The in-lens motor driver 230 is a drive circuit for driving the in-lens motor 240 and is controlled by the lens CPU 200.

  The aperture unit 250 forms a subject light passage region by opening and closing a plurality of aperture blades (not shown). The aperture blade opening / closing operation in the aperture unit 250 is driven by the aperture controller 260.

  The lens barrel 20 and the camera body 10 are joined by a mount portion 30. The mount unit 30 includes a body side mount (not shown) provided on the camera body 10 and a lens side mount (not shown) provided on the lens barrel 20. The mount unit 30 connects the camera body 10 and the lens barrel 20 by engaging both the mounts described above. In FIG. 1, a state in which the body side mount and the lens side mount are connected is shown as a mount portion 30.

  A communication contact (not shown) and a power contact (not shown) are provided on the inner peripheral side of each of the body side mount and the lens side mount. The communication contact is composed of a plurality of electrode contacts provided on the body side mount and a plurality of electrode contacts provided on the lens side mount. By engaging the body side mount and the lens side mount, both electrode contacts come into contact. When the power supply of the camera body 10 is turned on in this state, both electrode contacts are electrically connected to each other, and a communication path is established between the camera CPU 100 and the lens CPU 200.

  When the lens barrel 20 is mounted on the camera body 10, the body side mount and the lens side mount are engaged, and the power supply of the camera body 10 is turned on, the camera CPU 100 and the lens CPU 200 are connected via the communication path described above. Communication using electrical signals is performed between them. This communication is performed, for example, at intervals of about several ms while the camera body 10 is powered on. If the camera CPU 100 cannot communicate with the lens CPU 200 using an electrical signal, the camera CPU 100 determines that the engagement between the body-side mount and the lens-side mount has been released, and ends the communication.

  Further, a power contact is configured by the electrode contact provided on the body side mount and the electrode contact provided on the lens side mount. A power supply circuit unit (not shown) is provided inside the camera body 10. The camera body 10 supplies a part of the electric power stored in the power supply circuit unit to the lens barrel 20 through the power supply contact described above.

  The lens data storage unit 270 stores the lens type in the lens barrel 20, the open F value, the focal length of the optical system 210, information about the imageable range of the optical system 210, information about the driving range of the movable lens group 211, and the like. Storage device. Among these, information regarding the drive range of the movable lens group 211 is information transmitted from the camera CPU 100. Various types of information stored in the lens data storage unit 270 are read out via the lens CPU 200 and transmitted to the camera CPU 100 as necessary. The lens data storage unit 270 constitutes an imageable distance storage unit and a drive range storage unit in the present embodiment.

  Depending on the lens barrel 20, information regarding the recommended drive range of the movable lens group 211 in the lens barrel 20 is stored in the lens data storage unit 270. In this case, when the lens barrel 20 is attached to the camera body 10, the lens CPU 200 stores the lens type, the open F value, the focal length of the optical system 210, and the movable lens stored in the lens data storage unit 270. Information relating to the recommended drive range of the group 211 is transmitted to the camera CPU 100 of the camera body 10.

  Next, in the camera system 1 configured as described above, a processing procedure for setting the drive range of the attached lens barrel according to the shooting mode will be described with reference to the flowchart of FIG.

  FIG. 4 is a flowchart showing a processing procedure when the driving range of the attached lens barrel is set in accordance with the photographing mode in the camera system 1. In FIG. 4, the right side shows a flowchart of processing executed by the camera CPU 100 (hereinafter referred to as a camera-side flowchart), and the left side shows a flowchart of processing executed by the lens CPU 200 (hereinafter, referred to as a lens-side flowchart). In the processing of the flowchart shown in FIG. 4, the camera CPU 100 detects that the lens barrel 20 is attached to the camera body 10, the power of the camera body 10 is turned on, and a communication path is established between the camera CPU 100 and the lens CPU 200. It starts when you do. The lens CPU 200 executes each process based on an instruction from the camera CPU 100.

  First, in step S101 of the lens-side flowchart, in response to a read instruction from the camera CPU 100, the lens CPU 200 of the lens barrel 20 reads from the lens data storage unit 270 the lens type, open F value, focal length of the optical system 210, optical Information on the imageable range of the system 210 is read out.

  In step S <b> 102, in response to a transmission instruction from the camera CPU 100, the lens CPU 200 transmits information related to the shootable range of the optical system 210 described above to the camera CPU 100 of the camera body 10.

  On the other hand, in step S <b> 201 of the camera-side flowchart, the camera CPU 100 of the camera body 10 receives information related to the shootable range of the optical system 210 transmitted from the lens CPU 200 of the lens barrel 20. Subsequently, in step S <b> 202, the camera CPU 100 stores, in the camera data storage unit 120, the received information related to the imageable range of the optical system 210.

  In step S203, the camera CPU 100 determines whether the normal shooting mode or another shooting mode (close-up mode, distant view mode, or snap mode) is set as the shooting mode. If the camera CPU 100 determines in step S203 that the normal shooting mode is set, the process proceeds to step S204. If the camera CPU 100 determines in step S203 that another shooting mode is set, the process proceeds to step S206.

  In step S <b> 204, the camera CPU 100 determines a range from a position corresponding to the closest end of the optical system 210 to a position corresponding to infinity as the driving range of the movable lens group 211. Subsequently, in step S <b> 205, the camera CPU 100 stores information related to the driving range of the movable lens group 211 determined in step S <b> 204 in the camera data storage unit 120.

  On the other hand, in step S206, the camera CPU 100, based on the set shooting mode, information on the coefficient set in accordance with the shooting mode, and information on the shootable range of the optical system 210 previously received in step S201. Then, the driving range of the movable lens group 211 is determined. Subsequently, in step S207, the camera CPU 100 stores information on the driving range of the movable lens group 211 determined in step S206 in the camera data storage unit 120.

  In step S207, the camera CPU 100 stores information on the driving range of the movable lens group 211 on the display screen of the liquid crystal monitor 105 when information about the driving range of the movable lens group 211 is stored in the camera data storage unit 120. Can also be displayed. As described above, when the lens barrel 20 is attached to the camera body 10, the information on the driving range of the movable lens group 211 is displayed on the display screen of the liquid crystal monitor 105, so that the user can focus on the shooting distance. Can be confirmed.

  In addition, when the information regarding the driving range of the movable lens group 211 determined based on the recommended driving range of the lens barrel 20 is displayed on the liquid crystal monitor 105, the camera CPU 100 is the recommended driving range of the lens barrel 20. It is also possible to display an icon, a message, or the like indicating. According to this, the user can recognize that the driving range displayed on the liquid crystal monitor 105 is a preferable driving range for photographing with the lens barrel 20.

  In addition, when information related to the driving range of the movable lens group 211 is displayed on the display screen of the liquid crystal monitor 105, the user operates the operation input unit 130 to change the near side and the infinity side of the driving range. be able to. That is, when the lens barrel 20 is attached to the camera body 10, the user can change the close side and the infinity side of the drive range in accordance with the shooting intention. The display of information regarding the drive range is not limited to when the lens barrel 20 is attached to the camera body 10, but can also be displayed by operating a setting change button (not shown) of the operation input unit 130. The user can change the near side and the infinity side of the driving range by operating the selector dial 135 (see FIG. 2) in a state where information on the driving range is displayed on the display screen of the liquid crystal monitor 105. .

  In step S208, the camera CPU 100 reads out information related to the driving range of the movable lens group 211 stored in step S205 or step S207 from the camera data storage unit 120, and transmits the information to the lens CPU 200 of the lens barrel 20, thereby performing the processing of this flowchart. Exit.

  In step S103 of the lens-side flowchart, the lens CPU 200 of the lens barrel 20 receives information related to the driving range of the movable lens group 211 transmitted from the camera CPU 100 of the camera body 10 in response to a storage instruction from the camera CPU 100. . Subsequently, in step S104, the lens CPU 200 stores the received information regarding the driving range of the movable lens group 211 in the lens data storage unit 270, and ends the process of this flowchart.

  When the lens CPU 200 stores information on the recommended driving range of the movable lens group 211 in the lens barrel 20 in the lens data storage unit 270, the lens CPU 200 stores the information from the lens data storage unit 270 in step S101 in FIG. , The lens type, the open F value, the focal length of the optical system 210, information on the recommended driving range of the movable lens group 211, and the like are read. In step S <b> 102, the lens CPU 200 transmits the information and the like to the camera CPU 100 of the camera body 10.

  The camera CPU 100 receives information related to the recommended drive range of the movable lens group 211 from the mounted lens barrel 20, and in step S203, a shooting mode suitable for shooting with the mounted lens barrel 20 is set. Sometimes, in step S206, the received recommended drive range is determined as the drive range of the movable lens group 211 in the lens barrel 20. Thereafter, the process proceeds to step S207. On the other hand, when the photographing mode suitable for photographing with the attached lens barrel 20 is not set in step S203, the process proceeds to the above-described normal step S206.

  Through the processing in steps S101 to S104 described above, the driving range of the movable lens group 211 determined by the camera body 10 is stored in the lens data storage unit 270 of the lens barrel 20. Thereafter, the lens CPU 200 drives the movable lens group 211 in accordance with the drive signal received from the camera body 10. At this time, the lens CPU 200 drives the movable lens group 211 based on the driving range of the movable lens group 211 stored in the lens data storage unit 270 for the position corresponding to the closest side and the position corresponding to infinity. To regulate.

According to the said embodiment, there exist the following effects.
(1) By attaching the lens barrel 20 to the camera body 10 and setting a desired shooting mode, the driving range of the movable lens group 211 suitable for shooting with the lens barrel 20 is automatically determined. The Therefore, the user can easily set the drive range of the movable lens group 211 in the lens barrel 20 according to the shooting mode.

(2) The user can change the drive range of the movable lens group 211 determined by the camera body 10 by operating the operation input unit 130. Therefore, the user can set a driving range in accordance with the photographing intention, regardless of what lens barrel 20 is attached to the camera body 10.

(3) When the attached lens barrel 20 has a recommended drive range, the recommended drive range is set as the drive range of the movable lens group 211 in the lens barrel 20. For this reason, the user can easily set the driving range most suitable for the usage pattern of the attached lens barrel 20.

(4) While the lens barrel 20 is mounted on the camera body 10, information regarding the driving range of the movable lens group 211 is retained. For this reason, even when the user turns off the power supply and then turns it on again, the user can continue shooting with the drive range of the movable lens group 211 set last time.

(Deformation)
Without being limited to the embodiment described above, the present invention can be variously modified and changed as described below, and these are also within the scope of the present invention.
(1) The driving range of the movable lens group 211 in the attached lens barrel 20 may be determined based on table data stored in the camera data storage unit 120. The table data is data describing a combination of the focal length of the lens barrel 20 that can be attached to the camera body 10 and the corresponding driving range (near side, infinity side) for each shooting mode. In this case, the camera CPU 100 can specify the corresponding driving range from the table data by acquiring the set shooting mode and the focal length of the optical system 210 in the attached lens barrel 20. Further, when the camera CPU 100 acquires a user operation via the operation input unit 130, the camera CPU 100 changes or adds the contents or items of the table data in accordance with the user operation. According to this, the user can change the lens barrel 20 to be used into a desired drive range and store it. For this reason, the user can save the trouble of setting the drive range each time the lens barrel 20 is replaced. Therefore, usability can be improved.

(2) When the lens barrel 20 is detached from the camera body 10, information regarding the driving range of the movable lens group 211 stored in the camera data storage unit 120 may be retained. In this case, the camera CPU 100 drives the movable lens group 211 in the lens barrel 20 stored in the camera data storage unit 120 when the same (or the same type) lens barrel 20 is attached to the camera body 10. Information related to the range is read, and the drive range of the movable lens group 211 is controlled. The camera CPU 100 drives the optical system 210 within the drive range set by the same user when the user changes the information related to the drive range of the movable lens group 211 in the lens barrel 20. According to this, since it is not necessary for the user to change the information regarding the driving range of the movable lens group 211 every time the lens barrel 20 is mounted, the usability can be improved.

(3) The camera CPU 100 may determine the drive range of the movable lens group 211 and then transmit a pulse signal (drive signal) corresponding to the drive range to the lens CPU 200. In this case, the lens CPU 200 drives the movable lens group 211 in accordance with the pulse signal received from the camera CPU 100. For this reason, the camera CPU 100 does not need to transmit information regarding the determined drive range of the movable lens group 211 to the lens CPU 200. Accordingly, communication between the camera CPU 100 and the lens CPU 200 can be simplified. In the lens barrel 20, it is not necessary to store the received information regarding the driving range of the movable lens group 211 in the lens data storage unit 270.

  Further, the camera body 10 may have a configuration in which a motor that drives the focus adjustment mechanism 220 of the lens barrel 20 is incorporated. In this case, the rotational force of the motor built in the camera body 10 is transmitted to the focus adjustment mechanism 220 of the lens barrel 20 by a coupling mechanism (not shown). The coupling mechanism is a mechanism for mechanically transmitting the rotational force generated by the motor of the camera body 10 to the lens barrel 20. When the lens barrel 20 that does not include a focus adjustment motor is mounted on the camera body 10, the camera CPU 100 moves the focus adjustment mechanism 220 of the lens barrel 20 with a lens drive amount corresponding to the set drive range of the optical system. To drive. Even in this case, the camera CPU 100 does not need to transmit information regarding the set driving range of the movable lens group 211 to the lens barrel 20. Therefore, communication between the camera CPU 100 and the lens barrel 20 can be simplified.

(4) When the shooting mode is changed by a user operation and the camera CPU 100 newly sets the drive range of the movable lens group 211, as an initial setting, the focal position of the optical system 210 is set closer to the drive range. It is good also as a structure which moves. According to this, at the time of focus adjustment, it is not necessary to move the movable lens group 211 forward and backward along the optical axis, and the amount of movement can be reduced as much as possible. For this reason, the time required for focus adjustment can be shortened.

(5) The driving range of the movable lens group 211 in the lens barrel 20 may not be continuous. For example, the first driving range of the optical system 210 is 0.5 m from the closest side to 1.5 m at the infinity side, The second drive range of the optical system 210 may be from the near side 5 m to the infinity side ∞. In this case, the movable lens group 211 is not driven in the range from 1.5 m to 5 m. Further, the two driving ranges may be switched by the user operating a predetermined button.

(6) The lens barrel 20 attached to the camera body 10 may be a single focus lens or a zoom lens with a variable focal length. A conversion lens or the like may be inserted between the camera body 10 and the lens barrel 20.

(7) In the flowchart shown in FIG. 4, the lens barrel 20 may be configured to execute the processing from steps S203 to S207 executed on the camera body 10 side. In this embodiment, the lens CPU 200 receives from the camera CPU 100 information related to a shooting mode and a coefficient set according to the shooting mode as information related to the shooting mode. Then, the lens CPU 200 determines the drive range of the movable lens group 211 based on these pieces of information. In addition, the lens CPU 200 stores the determined driving range of the movable lens group 211 in the lens data storage unit 270. In the lens CPU 200, the operation for regulating the drive range of the movable lens group 211 is the same as that in the above-described embodiment. With such a configuration, it is possible to determine a driving range suitable for each lens barrel 20.

(8) The camera body 10 of the present embodiment includes a normal shooting mode, a close-up mode, a distant view mode, and a snap mode as settable shooting modes. However, the present invention is not limited to this example. It is good also as a structure which can set other modes, such as a mode and a selfie mode.

  Moreover, although the said embodiment and modification can be used in combination suitably, since the structure of each embodiment is clear by illustration and description, detailed description is abbreviate | omitted. Furthermore, the present invention is not limited by the embodiment described above.

  1: camera system, 10: camera body, 20: lens barrel, 100: camera CPU, 110: imaging unit, 120: camera data storage unit, 130: operation input unit, 200: lens CPU, 210: optical system, 211 : Movable lens group, 270: lens data storage unit

Claims (12)

For an optical system in which at least a part of the movable lens is movable along the optical axis direction, a drive unit that drives the movable lens, a shootable distance storage unit that stores information about a shootable range of the optical system, and a camera body A first transmission unit that transmits information related to the shootable range of the optical system, and that is determined in the camera body based on the information related to the shootable range of the optical system that is transmitted from the first transmission unit. A first receiving unit that receives information related to the driving range of the movable lens, a driving range storage unit that stores information related to the driving range of the movable lens received by the first receiving unit, and the storage that is stored in the driving range storage unit A lens barrel including a control unit that regulates the driving range of the movable lens by the driving unit, based on information about the driving range of the movable lens;
An imaging unit that captures a subject image formed by a lens barrel having an optical system, a shooting mode setting unit that sets at least one shooting mode from a plurality of shooting modes, and the optical system can be shot from the lens barrel A movable part included in the optical system based on the second receiving unit that receives information about the distance, the shooting mode set in the shooting mode setting unit, and the information about the shootable range of the optical system received from the lens barrel. A driving range determination unit that determines a driving range according to the shooting mode of the lens, and a second transmission unit that transmits information about the driving range of the movable lens determined by the driving range determination unit to the lens barrel. The camera body,
A camera system comprising: A lens barrel that is detachable from the camera body,
An optical system in which at least a part of the movable lens is movable along the optical axis direction;
A drive unit for driving the movable lens;
A shootable distance storage unit that stores information about a shootable range of the optical system;
A transmission unit that transmits information about the shootable range of the optical system to the camera body;
A receiving unit that receives information related to the driving range of the movable lens according to the shooting mode determined in the camera body based on the information related to the shooting range of the optical system transmitted from the transmission unit;
A drive range storage unit that stores information related to the drive range of the movable lens received by the reception unit;
A control unit that regulates a drive range of the movable lens by the drive unit based on information about the drive range of the movable lens stored in the drive range storage unit;
A lens barrel comprising: The lens barrel according to claim 2,
The drive range storage unit stores information related to the recommended drive range of the movable lens,
The control unit transmits information on the recommended driving range of the movable lens stored in the driving range storage unit to the camera body;
A lens barrel characterized by A lens barrel that is detachable from the camera body,
An optical system in which at least a part of the movable lens is movable along the optical axis direction;
A drive unit for driving the movable lens;
A shootable distance storage unit that stores information about a shootable range of the optical system;
A receiver for receiving a shooting mode from the camera body;
A drive range determination unit that determines information on the drive range of the movable lens according to the shooting mode based on the shooting mode received by the reception unit;
A drive range storage unit that stores information regarding the drive range of the movable lens determined by the drive range determination unit;
A control unit that regulates a drive range of the movable lens by the drive unit based on information about the drive range of the movable lens stored in the drive range storage unit;
A lens barrel comprising: A camera body with a detachable lens barrel having an optical system,
An imaging unit that captures a subject image formed by the lens barrel;
A shooting mode setting unit for setting at least one shooting mode from a plurality of shooting modes;
A receiving unit that receives information about a shootable distance of the optical system from the lens barrel;
Based on the shooting mode set in the shooting mode setting unit and information on the shooting range of the optical system received from the lens barrel, a driving range corresponding to the shooting mode of the movable lens included in the optical system is determined. A driving range determination unit for determining;
A transmission unit that transmits information about the driving range of the movable lens determined by the driving range determination unit to the lens barrel;
A camera body comprising: The camera body according to claim 5,
A driving range changing unit that changes information related to the driving range of the movable lens determined by the driving range determination unit according to a user operation;
The camera body characterized by. A camera body with a detachable lens barrel having an optical system,
An imaging unit that captures a subject image formed by the lens barrel;
A shooting mode setting unit for setting at least one shooting mode from a plurality of shooting modes;
A receiving unit that receives information about a shootable distance of the optical system from the lens barrel;
Based on the shooting mode set in the shooting mode setting unit and information on the shooting range of the optical system received from the lens barrel, a driving range corresponding to the shooting mode of the movable lens included in the optical system is determined. A driving range determination unit for determining;
A storage unit that stores information on the drive range of the movable lens determined by the drive range determination unit in a storage medium;
A camera body comprising: The camera body according to claim 7,
A driving range changing unit that changes information related to the driving range of the movable lens determined by the driving range determination unit according to a user operation;
The camera body characterized by. A camera body according to any one of claims 5 to 8,
In the camera body, information on coefficients set according to the shooting mode is held,
The drive range determination unit is based on information on the coefficient set according to the shooting mode held by the camera body and information on the shooting range of the optical system received from the lens barrel. Determining a driving range of the movable lens;
The camera body characterized by. The camera body according to any one of claims 5 to 8,
The camera body holds table data relating to the driving range of the movable lens set based on the shooting mode and the shooting range of the optical system,
The drive range determination unit determines a drive range of the movable lens based on the shooting mode and the table data;
The camera body characterized by. The camera body according to any one of claims 5 to 8,
When the drive range determination unit receives information on the recommended drive range of the movable lens from the lens barrel, the recommended drive range of the movable lens is set as the drive range of the movable lens in the lens barrel. thing,
The camera body characterized by. The camera body according to any one of claims 5 to 11,
The camera body holds information on the driving range of the movable lens while the lens barrel is mounted on the camera body.
The camera body characterized by.

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