JP2010219710A - Camera system, and control method of the camera system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a camera system having a lens barrel unit exchange system which is excellent in convenience when exchanging a lens barrel unit, and to provide a control method of the camera system. <P>SOLUTION: In the camera system having the lens barrel unit exchange system composed of a body unit and a lens barrel unit which can be attached/detached to/from the body unit, the body unit has a setting means setting lens setting information of the lens barrel unit, and a recording means recording the lens setting information of the lens barrel unit set by the setting means in the body unit. When a lens barrel unit exchange, the setting means has an automatic setting function setting lens setting information of a second lens barrel unit after the exchange according to lens setting information of a first lens barrel unit before the exchange recorded in the body unit by the recording means before the exchange. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lens barrel unit exchangeable camera system including a main body unit and a lens barrel unit detachable from the main body unit, and a control method of the camera system.

  2. Description of the Related Art In recent years, digital cameras have become widespread in which subject light is photoelectrically converted into digital image data and imaged by an image sensor such as a CCD image sensor and recorded on a recording medium such as a built-in memory or a memory card. As such a digital camera, a so-called single-lens reflex camera that can be easily replaced with a lens barrel unit having desired lens characteristics by making the lens barrel unit detachable from a camera body unit equipped with an image sensor. The type is known.

  However, in a digital camera that allows the lens barrel unit to be attached and detached, the image sensor is exposed when the lens barrel unit is replaced, so that dust adheres to the light incident surface and its surroundings, degrading the image quality of the captured image. There was a problem that. To solve this problem, there has been proposed a camera system in which the lens barrel unit includes an image sensor so that the photographing lens can be replaced without exposing the image sensor (see, for example, Patent Document 1). .) In this camera system, a lens barrel unit and a main body unit are electrically connected via a connector, and a subject is imaged by transmitting and receiving various control signals to each other. In addition, a camera system that optimizes by communicating between a lens barrel unit and a main body unit has been proposed (see, for example, Patent Document 2).

  However, by replacing the lens barrel unit, the user tries to realize what cannot be achieved with the lens barrel unit before replacement by using the lens barrel unit after replacement. The setting had to be made from the beginning, and the operation became complicated and the convenience was inferior. Further, when replacing the lens barrel unit, the user cannot easily determine which lens barrel unit can perform the operation and lens setting desired by the user, which is inferior in terms of convenience.

  The present invention has been made in view of the above problems in the prior art, and an object of the present invention is to provide a lens barrel unit replacement type camera system and a control method therefor that are excellent in convenience at the time of lens barrel unit replacement. .

  As a result of intensive studies, the present inventors set lens setting information of the lens barrel unit after replacement based on lens setting information of the lens barrel unit before replacement at least at the time of replacement, or non-mounted mirrors. It has been found that the above problem can be solved by making it possible to confirm lens setting information of the trunk unit on the display screen, and the present invention has been completed.

That is, in order to solve the above problems, the lens barrel unit replacement type camera system and the control method thereof according to the present invention specifically have the technical features described in (1) to (20) below.
(1): In a lens barrel unit exchangeable camera system including a main body unit and a lens barrel unit that can be attached to and detached from the main body unit, the main body unit includes setting means for setting lens setting information of the lens barrel unit; Recording means for recording lens setting information of the lens barrel unit set by the setting means on the main body unit, and the setting means is configured to replace the main body unit by the recording means before replacing the lens barrel unit. A lens barrel unit having an automatic setting function for setting lens setting information of the second lens barrel unit after replacement according to the lens setting information of the first lens barrel unit before replacement recorded in It is an interchangeable camera system.

(2): The automatic setting function sets the same lens setting information as the lens setting information of the first lens barrel unit recorded in the main body unit for the second lens barrel unit. The lens barrel unit exchangeable camera system according to (1) above, characterized in that it is a feature.

(3): The automatic setting function may set the same lens setting information as the lens setting information of the first lens barrel unit recorded in the main body unit for the second lens barrel unit. If this is not possible, the lens setting information closest to the lens setting information of the first lens barrel unit is set for the second lens barrel unit within a range that can be set for the second lens barrel unit. The lens barrel unit exchangeable camera system according to the above (1) or (2).

(4): a setting operation content storage means for storing the setting operation content of the first lens barrel unit by the setting means from a predetermined time before the first lens barrel unit is removed from the main body unit; The automatic setting function according to the setting operation content of the first lens barrel unit stored in the setting operation content storage means and the lens setting information of the first lens barrel unit recorded in the main body unit. The lens unit exchangeable camera system according to any one of (1) to (3), wherein lens setting information of the second lens barrel unit is set.

(5): It further comprises selection means for selecting on / off of the automatic setting function, and when the automatic setting function is selected to be on by the selection means, the setting means uses the automatic setting function to According to the lens setting information of the first lens barrel unit recorded in the above, the lens setting information of the second lens barrel unit is set, and when the automatic setting function is selected by the selection means, The setting means sets lens setting information of the second lens barrel unit based on default lens setting information preset in the main body unit or the second lens barrel unit. The lens barrel unit exchangeable camera system according to any one of (1) to (4) above.

(6): In a camera unit interchangeable camera system including a main body unit and a lens barrel unit detachable from the main body unit, the main body unit stores information on a plurality of lens barrel units that can be attached to the main body unit. Based on information on the plurality of lens barrel units stored in the main body unit, storage means for storing in the main body unit, display means for displaying information on the lens barrel unit, and at least one of the plurality of lens barrel units. Information transmitting means for transmitting information relating to one lens barrel unit to the display means, wherein the information transmitting means is at least one of the plurality of lens barrel units other than the lens barrel unit attached to the main body unit. Information on the lens barrel unit is transmitted to the display means. .

(7): The information transmission means transmits the information related to the lens barrel unit attached to the main body unit and the information related to the other lens barrel unit in a distinguishable manner (6) The lens barrel unit exchangeable camera system described in 1.

(8): It comprises a transmission selection means for selecting whether information relating to one or more of the plurality of lens barrel units is transmitted to the display means by the information transmission means. The lens barrel unit exchangeable camera system according to (6) or (7).

(9): The storage means receives information on the lens barrel unit from the mounted lens barrel unit, and stores the received information in the main body unit. A lens barrel unit exchangeable camera system according to any one of the above.

(10): The information on the plurality of lens barrel units stored in the main body unit is updated when the firmware of the main body unit is updated. This is a camera system with a replaceable lens barrel unit.

(11): The lens barrel according to any one of (1) to (10), wherein the main body unit includes a lens barrel attachment / detachment detecting unit that detects attachment / detachment of the lens barrel unit with respect to the main body unit. This is a unit exchange type camera system.

(12): In a control method of a lens barrel unit exchangeable camera system including a main body unit and a lens barrel unit that can be attached to and detached from the main body unit, the main body unit sets a lens setting information of the lens barrel unit. And a recording step for recording lens setting information of the lens barrel unit set in the setting step on the main body unit, and the setting step is performed by the recording step before replacement when replacing the lens barrel unit. In accordance with the lens setting information of the first lens barrel unit before replacement recorded in the main body unit, there is an automatic setting step of setting the lens setting information of the second lens barrel unit after replacement. It is a control method of a camera system of a lens barrel unit exchange type.

(13): The automatic setting step sets, for the second lens barrel unit, the same lens setting information as the lens setting information of the first lens barrel unit recorded in the main body unit. A control method for a lens barrel unit exchangeable camera system according to (12), which is characterized in that

(14): The automatic setting step may set the same lens setting information as the lens setting information of the first lens barrel unit recorded in the main body unit for the second lens barrel unit. If this is not possible, the lens setting information closest to the lens setting information of the first lens barrel unit is set for the second lens barrel unit within a range that can be set for the second lens barrel unit. The control method of a lens barrel unit exchangeable camera system according to the above (12) or (13).

(15): a setting operation content storing step of storing the setting operation content of the first lens barrel unit in the setting step from a predetermined time before the first lens barrel unit is removed from the main body unit; The automatic setting step according to the setting operation content of the first lens barrel unit stored in the setting operation content storage step and the lens setting information of the first lens barrel unit recorded in the main body unit. The method of controlling a lens barrel unit exchangeable camera system according to any one of (12) to (14), wherein lens setting information of the second lens barrel unit is set.

(16): a selection step of selecting ON / OFF of the automatic setting step, and when the automatic setting step is selected to be ON by the selection step, the setting step is performed by the automatic setting step, the main unit According to the lens setting information of the first lens barrel unit recorded in the above, the lens setting information of the second lens barrel unit is set, and when the automatic setting step is selected off by the selection step, The setting step sets lens setting information of the second lens barrel unit based on default lens setting information set in advance in the main body unit or the second lens barrel unit. A method of controlling a lens barrel unit exchangeable camera system according to any one of (12) to (15).

(17): In a control method of a lens barrel unit exchangeable camera system including a main body unit and a lens barrel unit detachable from the main body unit, the main body unit includes a plurality of lens barrel units attachable to the main body unit. Based on the storage step of storing information in the main body unit, the display step of displaying information on the lens barrel unit, and the information of the plurality of lens barrel units stored in the main body unit, the plurality of lens barrel units. An information transmission step of transmitting information related to at least one of the lens barrel units to the display step, wherein the information transmission step includes a mirror attached to at least the main body unit among the plurality of lens barrel units. Information on a lens barrel unit other than the lens barrel unit is transmitted to the display step. It is a system control method of.

(18): The information transmission step transmits the information relating to the lens barrel unit attached to the main body unit and the information relating to the other lens barrel unit so as to be distinguishable. The lens barrel unit exchangeable camera system control method described in 1).

(19): A transmission selection step of selecting whether information about one or two or more lens barrel units among the plurality of lens barrel units is transmitted to the display step by the information transmission step is provided. This is a method for controlling the lens barrel unit exchangeable camera system according to the above (17) or (18).

(20): In the above (17) to (19), the storage step receives information of the lens barrel unit from the mounted lens barrel unit, and stores the received information in the main body unit. It is a control method of the camera system of an interchangeable lens barrel unit described in any one of the above.

(21) The information on the plurality of lens barrel units stored in the main body unit is updated when the firmware of the main body unit is updated. It is a control method of the camera system of an interchangeable lens barrel unit.

(22): The lens barrel according to any one of (12) to (21), wherein the main body unit includes a lens barrel attachment / detachment detecting step of detecting attachment / detachment of the lens barrel unit to / from the main body unit. It is a control method of a unit exchange type camera system.

  According to the present invention, it is possible to provide a lens barrel unit exchange type camera system excellent in convenience and a control method thereof.

It is an external appearance perspective view which shows the structural example of embodiment of the camera system which concerns on this invention. It is a functional block diagram which shows the example of the lens barrel unit and main body unit which comprise the camera system which concerns on this invention. It is a functional block diagram which shows another example of the said lens barrel unit. It is a functional block diagram which shows another example of the said lens barrel unit. It is a flowchart which shows the example of the process assignment determination process in the said camera system. It is a flowchart which shows the example of the flow of a process of the monitoring operation | movement in the said camera system. It is a flowchart which shows the example of the flow of a process of the imaging operation in the said camera system. It is a figure which shows the example of the display screen which is displaying the menu of the said camera system. It is a flowchart which shows the example of the flow of operation | movement of the lens barrel unit replacement | exchange in the said camera system. It is a display screen (photographing screen) when the lens barrel unit L1 is mounted. It is a display screen (photographing screen) when the lens barrel unit L1 is mounted and the capability of the lens barrel unit L2 is also displayed. It is a display screen (photographing screen) when the lens barrel unit L2 is mounted and the capability of the lens barrel unit L1 is also displayed. It is a figure which shows the 1st example of the setting content of the said camera system. It is explanatory drawing which shows the position (zoom position 1-10) which divided | segmented between focal distances 28mm-136mm in the lens barrel unit of 5 times zoom at equal intervals. It is explanatory drawing which shows the position (zoom positions 1-10) which divided between focal lengths 35mm-107mm in the lens barrel unit of 3 times zoom at equal intervals. It is a figure which shows the 2nd example of the setting content of the said camera system. It is a figure which shows the 3rd example of the setting content of the said camera system. It is a figure which shows the 4th example of the setting content of the said camera system.

Hereinafter, a lens barrel unit exchange type camera system and a control method thereof according to the present invention will be described in detail with reference to the drawings.
Although the embodiments described below are preferred embodiments of the present invention, various technically preferable limitations are attached thereto, but the scope of the present invention is intended to limit the present invention in the following description. Unless otherwise described, the present invention is not limited to these embodiments.

  FIG. 1 is an external view showing a configuration example of an embodiment of a camera system of a lens barrel unit exchange type according to the present invention. In FIG. 1, the camera system 3 includes a main unit 2 and a lens barrel unit 1 that can be attached to and detached from the main unit 2. In the camera system 3, the lens barrel unit 1 (hereinafter also referred to as a lens unit) and the main unit 2 are integrated to exhibit a function as a camera system (imaging device). The lens barrel unit 1 is appropriately selected by a user from various types and is attached to the main body unit 2. For example, the lens barrel unit 11 (FIG. 1A) of a single focus lens or an optical zoom is used. There is a lens barrel unit 12 (FIG. 1B) on which is mounted.

  Next, a functional configuration of the camera system according to the present embodiment will be described with reference to FIGS. FIG. 2 is a diagram showing functional blocks of the lens barrel unit 1 and the main unit 2 constituting the camera system 3 according to the present invention. In FIG. 2, a lens unit 100 (showing a functional block of a lens barrel unit) converts a lens group 107 including a focus lens and a subject image received through the lens group 107 from an optical signal to an electrical signal and outputs the converted signal. Imaging device 108, AFE (analog front end) 109 that converts a signal (analog image data) output from the imaging device 108 into digital image data and amplifies the signal, and YUV for the converted digital image data A CPU 103 that is a so-called image engine that performs predetermined image processing such as data conversion processing, JPEG compression processing, and RAW data generation processing. In the present embodiment, the lens barrel unit 1 is configured to include the image sensor 108, but the present invention is not limited to this, and the main body unit 2 may be configured.

  The lens unit 100 includes a joint connector 116 that constitutes an inter-unit interface that is electrically connected to the main unit 200, and a bidirectional bus 123 that transmits image data to the main unit 200 via the joint connector 116. Signal lines for transmitting / receiving the control signal 121, the serial interface signal 122, and the SDIO signal 124 are provided.

  In addition, the lens unit 100 includes a motor driver 111 that controls a motor 110 used for extending and storing the lens barrel of the lens group 107. The motor driver 111 is controlled by a control signal 121 received from the main unit 200. With this mechanism, depending on the type of the interchangeable lens, various operation controls such as storing the lens barrel when the power of the camera system 3 is turned off and performing a zooming operation by pressing a button (not shown) can be performed. .

  In addition, the lens unit 100 detects the DC-DC converter 101 that generates various types of power necessary for the operation of the lens unit 100 from the power 120 supplied from the main unit 200, and the power 120 supplied from the main unit 200. A sub-microcomputer 102 that controls the DC-DC converter and a detection circuit 113 that detects a teleconverter lens and a wide converter lens that can be mounted outside the lens unit 100 are provided.

  The lens unit 100 also includes a gyro sensor 106 that detects the tilt of the camera system 3, an acceleration sensor 112 that detects acceleration applied to the camera system 3, the tilt detected by the gyro sensor 106, and the acceleration detected by the acceleration sensor 112. A coil 105 for driving the lens group 107 and a hall element 104 for detecting the driving amount of the coil 105 are provided. The gyro sensor 106, the acceleration sensor 112, the coil 105, and the hall element 104 can exhibit a camera shake prevention function.

  In the lens unit 100, software for performing image processing and operation control processing is stored in a flash ROM 114, and the CPU 103 uses the RAM 115 as a work area to perform processing by this software. And processing control.

  In FIG. 2, the main unit 200 (showing functional blocks of the main unit) receives from the lens unit 100 via the joint connector 201 that constitutes an inter-unit interface that is electrically connected to the lens unit 100. A bidirectional bus 223 for transferring image data to the CPU 208, which is a so-called image engine, and image data received via the bidirectional bus 223, conversion processing to YUV data, compression processing in JPEG format, JPEG format The CPU 208, which is a so-called image engine that appropriately performs the unfolding process and the RAW data generation process, the control signal 221 line connected to the control signal 121 line of the lens unit 100, and the serial interface signal 1 of the lens unit 100. It comprises a line of the serial interface signal 222 that connects to the second line, the line of the SDIO signal 224 to connect the line of the SDIO signal 124 of the lens unit 100.

  Further, the main unit 200 selects and sets a focus & release switch 211 that is a switch for starting a shooting operation of the camera system 3 by a predetermined pressing operation and the operation mode of the camera system 3 set in the main unit 200. A switch 206 composed of a cross key to be used and the like. The input of the switch 206 is detected to perform a predetermined setting process, and the power supplied from the lithium ion battery 204 is supplied using the DC-DC converter 203. A sub-microcomputer 205 is also provided for controlling and a power switch 202 that is a switch for supplying power to the lens unit 100.

  The main unit 200 also includes a flash ROM 219 in which software for performing image processing and operation control processing is stored, and the CPU 208 uses the RAM 220 as a work area to perform processing by this software. It is comprised so that control may be performed.

  The main unit 200 also includes an audio codec 216, a microphone 218 that inputs an audio signal to the audio codec 216, a speaker 217 that outputs sound from the audio codec 216, a USB interface connector 214, an AV output connector 213, HDMI signal output interface 212, SD memory 215, which is a detachable recording medium for storing captured image files, a strobe 207 that also serves as a connection circuit for attaching an external strobe to the main unit 200, and a switch An LCD 210 and an EVF 209 which are display means for displaying a subject image in a monitoring operation during the focusing operation by the operation 211 and displaying captured image data when performing a photographing operation are provided.

  FIG. 3 is a functional block diagram showing another example of the lens barrel unit 1 constituting the camera system according to the present invention. In FIG. 3, the lens unit 300 has substantially the same configuration as the lens unit 100 shown in FIG. A different configuration is that the lens group 307 includes a zoom lens and has a zoom motor 310 for moving the zoom lens. The lens unit 200 is configured to cause the focus lens and the zoom lens provided in the lens group 307 to perform predetermined operations by operating a zoom switch provided in the main body unit 200 (not shown).

  FIG. 4 is a functional block diagram showing still another example of the lens barrel unit 1 constituting the camera system according to the present invention. 4, the lens unit 400 has substantially the same configuration as the lens unit 100 shown in FIG. 2. A different configuration includes the large image pickup device 408, so that the Hall element 104 and the coil that perform the camera shake prevention operation are provided. 105, the configuration corresponding to the gyro sensor 106 is omitted.

  According to the camera system 3 having the above-described configuration, the bus width of the bidirectional bus 123 of the lens unit 100 and the bidirectional bus 223 of the main unit 200 is set depending on the setting of the operation mode and the setting of the image recording size and the image recording format. You can change the settings. Thus, the bus width can be changed at any time according to the amount of data transmitted and received. In addition, according to the camera system 3 of the present embodiment, a plurality of image data (imaging data) for a plurality of image data (imaging data) is transmitted according to the amount of data transmitted and received between the lens unit 100 and the main unit 200 that change according to the above-described shooting mode setting. The image processing can be distributed to change the range of image processing shared between the lens unit 100 and the main unit 200, and the image data in the middle of the processing can be changed as needed regardless of the stage of the image processing. You will be able to exchange data. Note that the method of data communication performed between the lens unit 100 and the main unit 200 may be appropriately selected from various transfer methods such as DMA transfer and packet transfer.

  In addition, the camera system according to the present embodiment can perform the above-described processing using any of the lens units 100, 300, and 400. Therefore, in the following description, an example using the lens unit 100 will be described unless otherwise specified. The operation of the camera system 1 is controlled by software stored in the flash ROM 114 of the lens unit 100 and the flash ROM 219 of the main unit 200. FIG. 5 is a flowchart showing a processing flow of software for controlling the sharing setting of the image processing function performed after the camera system 3 is turned on.

  In FIG. 5, each processing step is expressed as S1, S2,. First, a predetermined operation is performed on the power switch 202 of the camera system 3 to turn on the operating power. The predetermined operation of the power switch 202 is an operation such as pressing and holding the power switch or sliding the power switch.

  When the operation power is turned on in the camera system 3, a process of determining an operation mode set in advance by the SW 206 (FIG. 2) provided in the main unit 200 is performed (S1). If the set operation mode is “playback mode” in which the recorded image file is displayed on the display means (S1), the process of setting “function sharing 3” to the lens unit 100 and the main unit 200 is performed. (S5).

If the operation mode is “shooting mode” in which an image file obtained by capturing a subject image is recorded (S1), a process for determining the state of the release SW 211 (FIG. 2) provided in the main unit 200 is performed (S2). If the release SW 211 is in a monitoring state (for example, a state where the SW 211 is pressed lightly), “function sharing 1” is set in the lens unit 100 and the main unit 200 (S3).
If the release SW 211 is in the shooting state (for example, the state where the SW 211 is pressed deeply), “function sharing 2” is set in the lens unit 100 and the main unit 200 (S4).

  Here, “function sharing is set in the lens unit 100 and the main unit 200” means that a plurality of image processing (for image data) performed in imaging processing and playback processing performed using the camera system of the present embodiment ( Image processing range) refers to processing for setting image processing performed on the lens unit 100 side and image processing performed on the main unit 200 side, respectively. In other words, this is a process for setting a shared range of a plurality of image processes to be performed on imaging data in the lens unit 100 and the main unit 200. Accordingly, in the function sharing 1 to 3, the sharing range of image processing performed by the lens unit 100 and the main body unit 200 is different.

《Function sharing 1》
“Function sharing 1” is an A / D conversion process in which in the lens unit 100, a subject image subjected to a light receiving process by the image sensor via the lens group 107 or the like is converted into an analog electric signal and converted into digital data. YUV conversion processing for converting digital data into YUV data, conversion to an appropriate size for displaying YUV data on the LCD 210 provided in the main unit 200, and VGA size thinning processing for thinning out approximately 15 to 30 images per second, thinning processing JPEG compression processing for compressing the YUV data, and processing for setting to perform regular transmission processing for transmitting the compressed JPEG data to the main unit 200 at a predetermined time interval.
“Function sharing 1” means that the main unit 200 receives the JPEG data sent from the lens unit 100 at a predetermined time interval, and decompresses the received JPEG data to convert it into YUV data. This is processing for setting to perform reception data expansion processing and processing for outputting YUV data to the LCD 210.

  FIG. 6 is a diagram illustrating a processing flow in the lens unit 100 and the main unit 200 in which the function sharing 1 is set. An inter-unit interface (I / F) 500 that connects the lens unit 100 and the main unit 200 is a communication interface denoted by reference numerals 116, 316, 416, and 201 in FIGS.

  When a predetermined monitoring operation is performed, the lens unit 100 to which the function sharing 1 is set outputs an electrical signal corresponding to a subject image captured by the imaging device from the imaging device 108 via the lens group 107 provided in the lens unit 100. Then, this electrical signal is converted into digital data to generate RAW data (S11). Next, the RAW data is converted into an image size suitable for display on the LCD 210 of the main unit 200 and YUV conversion processing is performed (S12), and the YUV data obtained thereby is compressed in JPEG format. It is converted (S13) and transmitted to the main unit 200 (S14).

  When the JPEG data is transmitted from the lens unit 100 via the inter-unit I / F 500, the main unit 200 receives the JPEG data (S20), expands the received JPEG data, and converts it into YUV data. (S21). By outputting this YUV data to display means such as the LCD 210 (FIG. 2) (S22), the subject image can be monitored.

  As described above, since the function sharing 1 set during the monitoring process is the JPEG format in which the format of the image data communicated via the inter-unit I / F 500 is compressed, the data communication amount can be kept low. .

《Function sharing 2》
“Function sharing 2” refers to an A / D conversion process in which the subject image received by the image sensor via the lens group 107 or the like in the lens unit 100 is converted into an analog electrical signal and converted into digital data. This is processing for outputting digital data as it is as raw data, and processing for setting processing for transmitting raw data to the main unit 200.
“Function sharing 2” means that the main unit 200 receives a RAW data sent from the lens unit 100, a YUV conversion process that converts the RAW data into YUV data, and YUV data specified in advance. The specified storage size setting process to convert to the specified storage size, the JPEG compression process to convert the YUV data converted to the specified storage size to JPEG data, the JPEG data is added with the specified header information, etc. Is set to perform processing for transmitting the image file to the recording circuit for storing the image file such as the SD memory 215 or the RAM 220.
If the storage format of the image file set in advance in the main unit 200 is “RAW format” in the process of setting the function sharing 2, the main unit 200 converts the received RAW data into an image in the SD memory 214, the RAM 220, or the like. It is also possible to set so as to perform the process of transmitting the file to the recording circuit for storing the file, and not to perform the YUV conversion process or the JPEG compression process.

  Next, an example of data flow in the function sharing 2 will be described. FIG. 7 is a diagram showing a flow of processing at the time of still image shooting in the lens unit 100 and the main unit 200 in which the function sharing 2 is set. In the lens unit 100 in which the function sharing 2 is set, when a predetermined imaging operation is performed, an electrical signal corresponding to a subject image captured by the imaging device is output from the imaging device 108 via the lens group 107 included in the lens unit 100. (S10). This electrical signal is converted into digital data to generate RAW data (S11), and this RAW data is transmitted to the main unit 200 (S14).

When the RAW data is transmitted from the lens unit 100 via the inter-unit I / F 500, the main unit 200 performs a process of receiving the RAW data (S20), and header information including metadata and the like in the received RAW data. Is added to generate a RAW image file (24). The generated RAW image file is sent to the storage means and stored in a predetermined recording medium (S26).
If the main unit 200 is set to save an image file in JPEG format together with the RAW format, the received RAW data is converted into YUV data (S23), and the YUV data is converted into JPEG. The data is converted into a format, and predetermined header information is added to generate a JPEG image file (S25). The generated JPEG image file is sent to the recording means and stored in a predetermined recording medium (S26).

  By performing such processing, the main body unit 200 can specify a plurality of image file formats to be stored in advance, and can perform image file storage processing corresponding to the format.

《Function sharing 3》
“Function sharing 3” is a process of reading the image file stored in the SD memory 215 or the like in the main unit 200 without setting the process sharing for the lens unit 100, and YUV data that can display the read image file. Conversion processing for converting to Y, and processing for setting to resize the converted YUV data so that it can be output to display means such as the LCD 210.
In the function sharing 3, the process of converting to YUV data differs depending on whether the format of the read image file is JPEG format or RAW format, but it is set so that this is appropriately selected.
In the present embodiment, the imaging operation and the like are performed after sharing the functions described above. However, the camera system according to the present invention is not limited to this, and a camera system to which a conventionally known imaging operation is applied. It may be.

<Replacement operation of lens barrel unit>
Next, the operation when replacing the lens barrel unit, which is a feature of the present invention, will be described.
FIG. 8 shows an example of a menu displayed on the LCD. This menu shows an example of items that can be input by dial operation or button (switch 206 or the like) operation, and the setting menu includes capability display setting, capability reference, and lens barrel replacement. The capability display setting is an option for setting whether to enable or disable display of the capability of each lens barrel unit even if it is not attached to each lens barrel unit (transmission) Selection means). The capability reference is an item for displaying a list of the capabilities of known lens barrel units. Furthermore, the lens barrel replacement is selected when the lens barrel is replaced.

  The camera system can be set to a desired setting by inputting from this setting menu. Further, the operation for exchanging the lens barrel unit according to each input setting will be described below with reference to FIG. Here, an example in which the lens barrel unit L1 is replaced with the lens barrel unit L2 will be described. The lens barrel unit L1 has a focal length of 24 mm to 72 mm and ISO 100, 200, 400, 800, 1600, 3200, and the lens barrel unit L2 has a focal length of 28 mm to 200 mm, ISO 100, 200, 400, 800, There are 1600 settings.

When the power button (power switch 202) is turned on by a predetermined operation (S11), capability exchange is performed between the main unit and the lens barrel unit L1 attached (S12).
In the capability exchange, at least the product model number, zoom information, focus information, aperture information, number of pixels, and settable ISO sensitivity are transmitted from the lens barrel unit L1 to the main unit. On the other hand, at least the product model number and strobe information are transmitted from the main unit to the lens barrel unit L1.
At this time, whether or not the lens barrel unit L1 is in the mounted state is detected by the lens barrel attachment / detachment detecting means of the main unit, and the capability exchange (S12) is performed only when the mounted state is detected.

Next, the lens barrel unit L1 is determined in the main unit (S13), and if it is unknown, the capability (information) of the lens barrel unit is registered in the RAM 220, which is a recording medium, by the storage means of the main unit (S14). ), If it is known, do not register. Thereafter, the stored ability (information) is transmitted to the LCD as the display means using the information transmission means, and the ability is displayed (S15). At this time, if the main body unit has not been mounted with the lens barrel unit L2, only the capability of the lens barrel unit L1 being mounted is displayed on the LCD as shown in FIG. Further, even when the main body unit has been mounted with the lens barrel unit L2, if the display of the lens barrel unit L2 is selected to be disabled in the above-described capability display setting, the LCD displays FIG. As shown, only the capability of the lens barrel unit L1 being mounted is displayed.
Here, the lower side of the zoom bar shown in FIG. 10 is Wide and the upper side is Tele.

  On the other hand, if the main body unit has been equipped with the lens barrel unit L2 and the display of the lens barrel unit L2 is selected to be valid in the above-described capability display setting, the LCD displays FIG. As shown, in addition to the capability of the currently mounted lens barrel unit L1, the capability of the unmounted lens barrel unit L2 is displayed behind the capability of the currently mounted lens barrel unit (S16). When displaying this capability, the information transmitting means can distinguish between the lens barrel unit being mounted and the lens barrel unit not being mounted on the LCD whose display means is the capability of the lens barrel unit not mounted (for example, Sent in front / back).

As shown in FIG. 11, since the focal length of the lens barrel unit L2 is longer than that of the lens barrel unit L1, the zoom bar of the lens barrel unit L1 is displayed short.
Similarly, if there is a lens barrel unit (excluding the currently installed lens barrel unit) selected to enable display in the capability display setting other than the lens barrel unit L2, the capability of the lens barrel unit is displayed. Is displayed behind the ability of the mounted barrel unit.
Here, on the zoom bar displayed on the LCD, it is preferable to display the product name corresponding to each displayed lens barrel unit together.

Further, when the lens barrel unit L1 is detected to be mounted by the lens barrel attachment / detachment detection unit, the setting unit sets the lens setting information so that the focal length, ISO, and the like are in a state desired by the user. The setting can be set as desired by the user operating the switch 206 or the like.
The lens setting information at this time is recorded on the main unit in a state that can be called by the recording means.

When the user selects the lens barrel replacement from the menu (S17), “inheritance” or “standard” is further selected (S18; selection means for selecting ON / OFF of the automatic setting function).
When inheritance is selected (S19), the zoom and focus settings before replacement of the lens barrel unit L1 are set, and when standard is selected (S20), the default standard settings are set. .

The case where inheritance is selected from the menu (S19) will be described in more detail.
First, after the lens barrel unit L1 is removed from the main body unit, the lens barrel unit L2 is attached to the main body unit (S19-1). Further, in the same manner as at the time of activation (power ON), capability exchange (S19-2), lens determination (S19-3), capability registration (S19-4), capability display of the lens barrel unit L2 being mounted (S19) -5) The capability display (S19-6) of the currently mounted lens barrel unit L2 and other lens barrel units is performed.
After that, it is determined whether or not the lens unit L1 can be moved to the zoom position and the focus position before replacement (can be set in the lens setting information) (S19-7).

If the result of this determination is that it can be moved, the zoom position and focus position of the lens barrel unit L2 are moved to the zoom position and focus position before replacement of the lens barrel unit L1 with the automatic setting function of the setting means (S19-8). ). That is, the lens setting information of the lens barrel unit L1 before replacement is set in the lens barrel unit L2 with the automatic setting function of the setting means.
On the other hand, if it is determined that the movement is impossible, the zoom position and focus position of the lens barrel unit L2 are set to the closest position to the zoom position and focus position before replacement of the lens barrel unit L1. Move (S19-9). For example, if the inheritance is selected and replaced with the lens barrel unit L1 from the state set at the Tele end in the lens barrel unit L2, the lens barrel unit L1 cannot take over, so that the lens barrel having the closest angle of view is used. It is automatically set at the Tele end of the unit L1. That is, the lens setting information that is closest to the lens setting information of the lens barrel unit L1 before replacement (in a range that can be set in the lens barrel unit L2) is set in the lens barrel unit L2 with the automatic setting function of the setting means.

Further, the case where the standard is selected from the menu (S20) will be described in more detail.
First, after the lens barrel unit L1 is removed from the main body unit, the lens barrel unit L2 is attached to the main body unit (S20-1). Further, in the same manner as at the time of activation (power ON), capability exchange (S20-2), lens determination (S20-3), capability registration (S20-4), capability display of the lens barrel unit L2 being mounted (S20) -5) The capability display (S20-6) of the currently mounted lens barrel unit L2 and other lens barrel units is performed.
Thereafter, a default standard setting (default lens setting information) is set for the lens barrel unit L2. For example, the zoom position is set to the widest side, and the focus is set to a position near or close to 1.2 m. The position and the focus position are set (S20-7).

The replacement of the lens barrel unit is completed by the series of operations described above. In the LCD after the replacement, as shown in FIG. 12, the capability of the currently installed lens barrel unit L2 is displayed in front of the capability of the removed lens barrel unit L1.
The zoom and focus have been described as examples. However, the present invention is not limited to these examples. For example, the capability of a non-mounted lens barrel unit known in F value and ISO sensitivity is combined with the LCD in the same manner. This makes it possible to compare with the capacity of the lens barrel unit being mounted, and the convenience when exchanging the lens barrel unit is improved. Furthermore, since the setting of the currently mounted lens barrel unit can be taken over, it can be automatically set to the same or closest state when the lens barrel unit is replaced without turning off the power.

  Further, in the above example, the capability of the lens barrel unit is additionally registered by mounting the lens barrel unit, but the present invention is not limited to this, and for example, the capability of the lens barrel unit is additionally registered by firmware update of the main unit. Alternatively, an update or the like may be performed, and the capability of the sold copper mirror unit at the time of firmware update can be stored.

<< Other Embodiments of Lens Unit Replacement Operation >>
Other embodiments of the lens barrel unit replacement operation will be described below. Here, only the operation after inheritance / standard selection (S18), which is a difference from the above-described exchange operation, will be described.
For example, one minute (corresponding to a predetermined time) before the setting unit storage unit that stores the setting operation content for the lens barrel unit L1 that has been mounted before the replacement by the setting unit from a predetermined time before the lens unit replacement. It is stored that the lens setting has been changed to the settable limit. When the setting is possible beyond the settable limit in the lens barrel unit that is replaced after that (after one minute from the storage timing), the replaced lens barrel unit does not carry over the setting before the replacement. The setting exceeds the limit that can be set.
Specifically, after changing to the maximum zoom that can be set before replacing the lens barrel unit, if the lens unit is changed to a lens unit that allows more telephoto setting within one minute, the lens barrel after replacement is changed. The unit is not set by inheriting the previous zoom magnification, but is set at a magnification obtained by zooming one step further.
Note that the setting for zoom has been described as an example, but it goes without saying that the present invention is not limited only to the setting for zoom.

《Function to store user settings related to shooting》
In addition, the camera system according to the present invention may be configured to have a function of storing various user settings relating to shooting. Hereinafter, a function for storing various user settings relating to shooting will be described.
A plurality of lens barrel units can be attached to and detached from the main body unit. For example, a lens barrel unit of 5 × zoom and a lens barrel unit of 3 × zoom can be attached / detached. Connected to the unit.
At this time, when the user stores various settings relating to shooting in the main unit, the operation key (switch 206 or the like) is operated to set the strobe, image size, ISO sensitivity, exposure correction, and zoom. This setting is stored in a built-in memory (such as RAM 220) of the main unit. The setting to be stored is not limited to one, and it is preferable that a plurality of settings can be stored.

Then, by calling this setting, it is possible to shoot with a desired setting without requiring a complicated operation. For example, by turning the mode dial, the settings stored in the built-in memory can be called, and various settings can be read to set each shooting mode in the camera system. Examples of the setting contents are as shown in FIG.
However, if the various stored settings are not within the settable range of the lens barrel unit, for example, at the time of storage, 4 × magnification is stored in the 5 × zoom lens barrel unit, and 3 × zoom can be performed by replacing the lens barrel unit. When the lens barrel unit is mounted, the zoom position is set to the wide end (1 ×). Alternatively, when the lens barrel unit type is different (when the lens barrel unit is exchanged), the zoom setting need not be performed.

In addition, the zoom position may be determined by the magnification as described above, and in each of the lens barrel units, a position where the focal lengths are divided at equal intervals may be determined as the zoom position.
For example, as shown in FIG. 14, the positions obtained by dividing the focal lengths of 28 mm to 136 mm at equal intervals in the 5 × zoom lens barrel unit are assigned to the zoom positions 1 to 10, respectively. In the case of 3 × zoom, as shown in FIG. 15, positions where the focal lengths of 35 mm to 107 mm in the lens barrel unit are divided at equal intervals are assigned to the zoom positions 1 to 10, respectively. At the time of setting, one of the zoom positions 1 to 10 is stored and called to perform zoom setting. The setting content at this time is, for example, as shown in FIG.

Examples of the configuration for realizing the above-described function for storing various user settings relating to shooting include the following configuration examples.
[Configuration example 1]
Imaging means for capturing a subject image and outputting it as image data, recording means for recording the image data as an image file, and means for storing various user settings relating to imaging of an imaging device (camera system, the same applies hereinafter) In an imaging device capable of replacing an imaging optical system (lens barrel unit, the same applies hereinafter) having a means for calling and setting the stored user settings to the imaging device, the zoom position of the user's various settings relating to shooting is stored. When you do this, it also stores the type of imaging optical system, recalls the stored user settings, and sets it to the imaging device. When the imaging optical system currently on is the same as the stored imaging optical system, it stores the zoom position. An image pickup apparatus that moves to a position that has been moved.

[Configuration example 2]
Image pickup means for picking up a subject image and outputting it as image data, recording means for recording the image data as an image file, means for storing various user settings relating to shooting of the image pickup apparatus, and calling stored user settings In an imaging device having a means for setting to the imaging optical system that can be replaced, when storing the zoom position of the user's various settings related to shooting, the type of the imaging optical system is also stored, and the stored user settings are recalled, An imaging apparatus characterized in that, when setting to an imaging apparatus, the zoom position is not set when the imaging optical system currently attached is different from the stored imaging optical system.

[Configuration example 3]
Image pickup means for picking up a subject image and outputting it as image data, recording means for recording the image data as an image file, means for storing various user settings relating to shooting of the image pickup apparatus, and calling stored user settings In an imaging device having a means for setting to the imaging optical system that can be replaced, when storing the zoom position of the user's various settings related to shooting, the type of the imaging optical system is also stored, and the stored user settings are recalled, An imaging apparatus characterized in that, when setting to an imaging apparatus, if the imaging optical system currently attached is different from the stored imaging optical system, the zoom position is set to the wide end.

  By having the characteristics of the configuration examples 1 to 3, it is possible to store various settings of the user relating to shooting of the imaging device, and to call all the stored user settings and set them to the imaging device, and to replace the imaging optical system When you can store various settings with an imaging device that can be used, you can also store the type of imaging optical system, so when you call the stored user settings and set the imaging device, the same as when the imaging optical system stores it If it is an imaging optical system, it moves to the stored zoom position, and if the imaging optical system is different from that stored by the imaging optical system, the zoom position is not moved or moved to the wide end, so that it is easy for the user to use.

[Configuration Example 4]
Image pickup means for picking up a subject image and outputting it as image data, recording means for recording the image data as an image file, means for storing various user settings relating to shooting of the image pickup apparatus, and calling stored user settings In an imaging device that can replace the imaging optical system with the setting means, when storing the zoom position of the user's various settings related to shooting, the magnification from the wide end to the tele end of the zoom lens is divided at equal intervals. When recalling the stored position, recalling the stored user settings, and setting to the imaging device, the magnification from the wide end to the tele end of the zoom lens is divided at equal intervals even when an imaging optical system with a different magnification is installed. An imaging apparatus characterized by being set to a specific position.

  By having the characteristics of the configuration example 4, it is possible to store various settings of the user regarding shooting of the imaging apparatus, and to call all the stored user settings and set them in the imaging apparatus, so that the imaging optical system can be replaced. When storing various settings in the imaging device, the storage of the zoom position is stored in the ratio from the wide end to the tele end of the zoom, and when setting, this ratio is set, so even if the imaging optical system is replaced, The zoom position can be set and is easy for the user to use.

<< Other forms of functions for storing user settings related to shooting >>
Further, other forms of the function for storing various user settings relating to shooting will be described.
For example, in a state where a 5 × zoom lens barrel unit is mounted on the main unit, the settings shown in FIG. 17 are stored in the built-in memory, and these settings are recalled and various settings are read out to the camera system. Set each shooting mode. At this time, the zoom position is set to 35 mm because the connected lens barrel unit is 5 times, so the zoom position can be set to a position where the stored value is 35 mm. When a 3 × zoom lens barrel unit is attached to the main unit, the zoom position can be set to a position of 35 mm, so the zoom position is set to 35 mm.

Next, when the settings shown in FIG. 18 are stored in the built-in memory, this setting is recalled, and various settings are read to set each shooting mode in the camera system, that is, when the zoom position is 136 mm. Think.
At this time, the zoom position can be set at a position of 136 mm when the 5 × zoom lens barrel unit is attached to the main body unit, but in the state where the 3 × zoom lens barrel unit is attached to the main body unit. Since the zoom position cannot be set at a position of 136 mm, the zoom position is not moved. Alternatively, the lens barrel unit moves to the wide end 35 mm of the lens barrel unit in a state where the lens barrel unit of 3 × zoom is attached to the main body unit.

Examples of the configuration that realizes the other embodiment of the function for storing the user's various settings relating to shooting described above include the following configuration examples.
[Configuration example 5]
Image pickup means for picking up a subject image and outputting it as image data, recording means for recording the image data as an image file, means for storing various user settings relating to shooting of the image pickup apparatus, and calling stored user settings In an imaging apparatus having an exchangeable imaging optical system having a setting means, when storing a zoom position among various user settings relating to shooting, the angle of view is stored, and the stored user setting is recalled to the imaging apparatus. An image pickup apparatus that moves to a stored angle of view when setting a zoom position.

[Configuration Example 6]
Image pickup means for picking up a subject image and outputting it as image data, recording means for recording the image data as an image file, means for storing various user settings relating to shooting of the image pickup apparatus, and calling stored user settings In an imaging apparatus having an exchangeable imaging optical system having a setting means, when storing a zoom position among various user settings relating to shooting, the angle of view is stored, and the stored user setting is recalled to the imaging apparatus. An imaging apparatus characterized by not moving when there is no angle of view that stores the zoom position when setting.

[Configuration Example 7]
Image pickup means for picking up a subject image and outputting it as image data, recording means for recording the image data as an image file, means for storing various user settings relating to shooting of the image pickup apparatus, and calling stored user settings In an imaging apparatus having an exchangeable imaging optical system having a setting means, when storing a zoom position among various user settings relating to shooting, the angle of view is stored, and the stored user setting is recalled to the imaging apparatus. An image pickup apparatus that moves to a wide end when there is no angle of view storing a zoom position when setting.

  By having the characteristics of the configuration examples 5 to 7, it is possible to store various user settings relating to imaging of the imaging device, and to call all the stored user settings and set them in the imaging device, and to replace the imaging optical system When storing various settings on an imaging device that can be used, and recalling the stored zoom angle of view and setting it to the imaging device, even if a different lens barrel is connected Since the zoom position is set to the angle of view, it is easy to use with the same angle of view even if a different lens barrel is connected.

1 Lens unit 2 Main unit 3 Camera system 500 Interface between units

Patent No. 36060287 Japanese Patent No. 2799715

Claims (22)

In a camera unit interchangeable camera system comprising a body unit and a body unit detachable from the body unit,
The main body unit has setting means for setting lens setting information of the lens barrel unit;
Recording means for recording lens setting information of the lens barrel unit set by the setting means on the main body unit;
With
When the lens barrel unit is replaced, the setting means is configured to change the second mirror after the replacement according to the lens setting information of the first lens barrel unit before replacement recorded in the main body unit by the recording means before the replacement. A lens barrel unit exchangeable camera system having an automatic setting function for setting lens setting information of a barrel unit.   The automatic setting function sets the same lens setting information as the lens setting information of the first lens barrel unit recorded in the main body unit for the second lens barrel unit. Item 1. The camera system of the lens barrel unit exchange type according to Item 1.   When the automatic setting function cannot set the same lens setting information as the lens setting information of the first lens barrel unit recorded in the main body unit for the second lens barrel unit, The lens setting information closest to the lens setting information of the first lens barrel unit is set for the second lens barrel unit within a range that can be set for the second lens barrel unit. Item 3. The lens barrel unit exchangeable camera system according to Item 1 or 2. A setting operation content storage means for storing the setting operation content of the first lens barrel unit by the setting means from a predetermined time before the first lens barrel unit is removed from the main body unit;
The automatic setting function, according to the setting operation content of the first lens barrel unit stored in the setting operation content storage means and the lens setting information of the first lens barrel unit recorded in the main body unit, 4. The lens unit exchangeable camera system according to claim 1, wherein lens setting information of the second lens barrel unit is set. A selection means for selecting on / off of the automatic setting function;
When the automatic setting function is selected to be on by the selection means, the setting means uses the automatic setting function according to the lens setting information of the first lens barrel unit recorded in the main body unit. Set the lens setting information of the second lens barrel unit,
When the automatic setting function is selected to be turned off by the selection unit, the setting unit performs the second setting based on default lens setting information set in advance in the main body unit or the second lens barrel unit. 5. The lens barrel unit exchangeable camera system according to claim 1, wherein lens setting information of the lens barrel unit is set. In a camera unit interchangeable camera system comprising a body unit and a body unit detachable from the body unit,
The main unit is configured to store information on a plurality of lens barrel units that can be attached to the main unit in the main unit;
Display means for displaying information about the lens barrel unit;
Information transmitting means for transmitting information related to at least one of the plurality of lens barrel units to the display means based on the information of the plurality of lens barrel units stored in the main body unit;
With
The information transmission means transmits information on a lens barrel unit other than the lens barrel unit attached to the main body unit among the plurality of lens barrel units to the display means. Type camera system.   The lens barrel according to claim 6, wherein the information transmitting unit transmits information relating to a lens barrel unit attached to the main body unit and information relating to other lens barrel units in a distinguishable manner. Unit exchangeable camera system.   The transmission selecting means for selecting whether information relating to any one or two or more of the lens barrel units among the plurality of lens barrel units is transmitted to the display means by the information transmitting means. Or a lens barrel unit exchangeable camera system according to 7.   9. The lens barrel according to claim 6, wherein the storage means receives information of the lens barrel unit from the lens barrel unit mounted, and stores the received information in the main body unit. Unit exchangeable camera system.   10. The lens barrel unit replaceable type according to claim 6, wherein when updating the firmware of the main body unit, information on a plurality of lens barrel units stored in the main body unit is updated. Camera system.   11. The lens barrel unit replaceable camera system according to claim 1, wherein the main body unit includes a lens barrel attachment / detachment detection unit that detects attachment / detachment of the lens barrel unit to / from the main body unit. In a control method of a camera unit exchangeable camera system comprising a main body unit and a lens barrel unit detachable from the main body unit,
The main unit is configured to set lens setting information of the lens barrel unit;
A recording step of recording lens setting information of the lens barrel unit set in the setting step in the main body unit;
With
In the setting step, when replacing the lens barrel unit, the second mirror after replacement is changed according to the lens setting information of the first lens barrel unit before replacement recorded in the main body unit by the recording step before replacement. A method of controlling a lens barrel unit exchangeable camera system, comprising an automatic setting step for setting lens setting information of a barrel unit.   The automatic setting step sets the same lens setting information as the lens setting information of the first lens barrel unit recorded in the main body unit for the second lens barrel unit. Item 13. A method for controlling a lens barrel unit exchangeable camera system according to Item 12.   In the automatic setting step, when the lens setting information that is the same as the lens setting information of the first lens barrel unit recorded in the main body unit cannot be set for the second lens barrel unit, The lens setting information closest to the lens setting information of the first lens barrel unit is set for the second lens barrel unit within a range that can be set for the second lens barrel unit. Item 14. A method for controlling a lens barrel unit exchangeable camera system according to Item 12 or 13. A setting operation content storing step of storing the setting operation content of the first lens barrel unit by the setting step from a predetermined time before the first lens barrel unit is removed from the main body unit;
The automatic setting step, according to the setting operation content of the first lens barrel unit stored in the setting operation content storage step and the lens setting information of the first lens barrel unit recorded in the main body unit, 15. The method of controlling a lens barrel unit exchangeable camera system according to claim 12, wherein lens setting information of the second lens barrel unit is set. A selection step of selecting on / off of the automatic setting step;
When the automatic setting step is selected to be on in the selection step, the setting step performs the first setting step according to the lens setting information of the first lens barrel unit recorded in the main unit by the automatic setting step. Set the lens setting information of the second lens barrel unit,
When the automatic setting step is selected to be off by the selecting step, the setting step is based on default lens setting information preset in the main body unit or the second lens barrel unit. 16. The method of controlling a lens barrel unit exchangeable camera system according to claim 12, wherein lens setting information of the lens barrel unit is set. In a control method of a camera unit exchangeable camera system comprising a main body unit and a lens barrel unit detachable from the main body unit,
The main body unit stores information on a plurality of lens barrel units that can be attached to the main body unit in the main body unit; and
A display process for displaying information about the lens barrel unit;
An information transmission step of transmitting information on at least one of the plurality of lens barrel units to the display step based on information of the plurality of lens barrel units stored in the main body unit;
With
In the information transmitting step, information on a lens barrel unit other than the lens barrel unit attached to at least the main body unit among the plurality of lens barrel units is transmitted to the display step. Method of a camera system of the type.   18. The lens barrel according to claim 17, wherein the information transmitting step transmits information relating to a lens barrel unit attached to the main unit and information relating to other lens barrel units so as to be distinguishable. A method for controlling a unit-replaceable camera system.   18. A transmission selection step of selecting whether information about one or two or more lens barrel units among the plurality of lens barrel units is to be transmitted to the display step by the information transmission step. Or a method of controlling the lens barrel unit exchangeable camera system according to 18.   The lens barrel according to any one of claims 17 to 19, wherein the storing step receives information of the lens barrel unit from the mounted lens barrel unit, and stores the received information in the main body unit. A method for controlling a unit-replaceable camera system.   21. The lens barrel unit replaceable type according to claim 17, wherein when updating the firmware of the main body unit, information of a plurality of lens barrel units stored in the main body unit is updated. Control method of camera system.   The lens barrel unit exchangeable camera system according to any one of claims 12 to 21, wherein the main body unit includes a lens barrel attachment / detachment detection step of detecting attachment / detachment of the lens barrel unit with respect to the main body unit. Control method.