JP2014021343A - Imaging apparatus, lens device, and imaging system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging apparatus that prevents wrong image correction processing.SOLUTION: An imaging apparatus to be mounted on a lens device includes: a control part that communicates with the lens device to acquire image correction data specific to the lens device; a storage part for storing the image correction data acquired by the control part; an image processing part that corrects a captured image by use of the image correction data; and an operation member to be used for issuing an instruction to the control part. The control part deletes the image correction data stored in the storage part on the basis of an instruction from the operation member in updating firmware of the lens device.

Description

  The present invention relates to an imaging apparatus that acquires image correction data from a lens apparatus.

  2. Description of the Related Art Conventionally, there has been known an imaging apparatus that acquires optical data unique to a lens apparatus as image correction data from the lens apparatus and corrects a captured image using the image correction data. The image correction data is stored in the lens device, and when the lens device is mounted on the imaging device, the image correction data is transferred from the lens device to the imaging device. The imaging device stores the transferred image correction data.

  Japanese Patent Application Laid-Open No. 2004-228561 discloses a stereo imaging-compatible imaging apparatus capable of appropriate and high-quality stereo imaging regardless of the type of interchangeable lens.

JP 2011-247965 A

  However, in the configuration disclosed in Patent Document 1, if the data formats of the imaging device side and the lens device (interchangeable lens) side are different, an incorrect image correction process may be performed. This is the same when an error in data communication occurs or when the storage unit of the imaging apparatus is destroyed. As described above, if image correction data that cannot be recognized by the imaging apparatus from the lens apparatus is received and stored, an erroneous image correction process may be performed.

  Therefore, the present invention provides an imaging apparatus, a lens apparatus, and an imaging system that prevent erroneous image correction processing.

  An imaging apparatus according to an aspect of the present invention is an imaging apparatus in which a lens apparatus can be mounted, and a controller that acquires image correction data unique to the lens apparatus by communicating with the lens apparatus; A storage unit that stores the image correction data acquired by the control unit, an image processing unit that corrects a captured image using the image correction data, and an operation member for instructing the control unit; The control unit erases the image correction data stored in the storage unit based on an instruction from the operation member when updating the firmware of the lens device.

  An imaging apparatus according to another aspect of the present invention is an imaging apparatus to which a lens apparatus can be attached, and a controller that acquires image correction data unique to the lens apparatus by communicating with the lens apparatus; A storage unit that stores the image correction data acquired by the control unit; and an image processing unit that corrects a captured image using the image correction data. The control unit is configured to update firmware of the lens device. At this time, if it is determined that the image correction data stored in the storage unit is inappropriate data, the image correction data stored in the storage unit is deleted.

  A lens apparatus according to another aspect of the present invention is a lens apparatus that can be attached to an imaging apparatus, and stores a storage unit that stores image correction data unique to the lens apparatus, and the image correction stored in the storage unit. A control unit that transmits data to the imaging device, and the control unit communicates with the imaging device based on an instruction from an operation member of the imaging device when the firmware of the lens device is updated. Thus, the image correction data is retransmitted.

  An imaging system according to another aspect of the present invention is an imaging system configured by mounting a lens device on an imaging device, and the lens device stores first image correction data unique to the lens device. And a first control unit that transmits the image correction data stored in the storage unit to the imaging device, and the imaging device communicates with the first control unit, thereby the lens device. A second control unit that acquires the image correction data from the second control unit, a second storage unit that stores the image correction data acquired by the second control unit, and an image process that corrects the captured image using the image correction data. And an operation member for giving an instruction to the second control unit, and the second control unit is configured to perform the first operation based on an instruction from the operation member when updating the firmware of the lens device. Erasing the image correction data stored in the storage unit.

  An imaging system according to another aspect of the present invention is an imaging system configured by mounting a lens device on an imaging device, and the lens device stores first image correction data unique to the lens device. And a first control unit that transmits the image correction data stored in the storage unit to the imaging device, and the imaging device communicates with the first control unit, thereby the lens device. A second control unit that acquires the image correction data from the second control unit, a second storage unit that stores the image correction data acquired by the second control unit, and an image process that corrects the captured image using the image correction data. And when the second control unit determines that the image correction data stored in the second storage unit is inappropriate data during firmware update of the lens device, Second Erasing the image correction data stored in 憶部.

  Other objects and features of the present invention are illustrated in the following examples.

  According to the present invention, it is possible to provide an imaging apparatus, a lens apparatus, and an imaging system that prevent erroneous image correction processing.

It is a block diagram which shows the structure of the imaging system in a present Example. 3 is a flowchart illustrating a method for controlling the imaging system according to the first exemplary embodiment. 6 is a flowchart illustrating a method for controlling the imaging system according to the second embodiment. 10 is a flowchart illustrating a method for controlling the imaging system according to the third embodiment. 10 is a flowchart illustrating a control method of the imaging system in Embodiment 4. 10 is a flowchart illustrating a method for controlling an imaging system according to a fifth embodiment. It is an example of a display of the firmware update of the imaging system in a present Example.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each figure, the same members are denoted by the same reference numerals, and redundant description is omitted.

  First, the configuration of the imaging system in the present embodiment will be described with reference to FIG. FIG. 1 is a block diagram illustrating a configuration of an imaging system. The imaging system 100 is a single-lens reflex digital camera system configured to include an imaging device 100a (camera body) and a lens device 100b (interchangeable lens) that can be attached to (detached from) the imaging device 100a.

  Reference numeral 101 denotes a photographing lens. Reference numeral 102 denotes an AF driving unit (autofocus driving unit). The AF driving unit 102 includes, for example, a DC motor or a stepping motor, and adjusts the focus by changing the focus lens position of the photographing lens 101 under the control of the lens CPU 132. Reference numeral 103 denotes a zoom drive unit. The zoom drive unit 103 includes, for example, a DC motor or a stepping motor, and changes the focal length of the photographic lens 101 by changing the zoom lens position of the photographic lens 101 under the control of the lens CPU 132. Reference numeral 104 denotes an aperture. Reference numeral 105 denotes an aperture driving unit. The diaphragm driving unit 105 drives the diaphragm 104. The driving amount of the diaphragm 104 (the amount to be driven) is calculated by the camera CPU 123 (microcomputer). The aperture drive unit 105 changes the optical aperture value (F value) by driving the aperture 104 by this drive amount.

  Reference numeral 106 denotes a main mirror for switching the light beam incident from the photographing lens 101 between the viewfinder side and the image sensor side. The main mirror 106 is normally disposed so as to reflect the light beam incident from the photographing lens 101 and guide it to the viewfinder. Further, the main mirror 106 is a half mirror so that the central part transmits a part of the light beam. A part of this light beam (transmitted light beam) is reflected by a sub-mirror 107 described later, and enters a sensor (focus detection circuit 109) for performing focus detection. On the other hand, when photographing is performed, the main mirror 106 jumps upward so as to be retracted from the light beam so that the light beam incident from the photographing lens 101 is guided to the image sensor 112.

  Reference numeral 107 denotes a submirror. The sub mirror 107 reflects the transmitted light beam from the main mirror 106 and guides it to a sensor (disposed in the focus detection circuit 109) for focus detection. Reference numeral 108 denotes a pentaprism that constitutes a finder. The finder includes a focus plate, an eyepiece lens, and the like in addition to the pentaprism 108.

  Reference numeral 109 denotes a focus detection circuit. The light beam transmitted through the central portion of the main mirror 106 and reflected by the sub mirror 107 is arranged inside the focus detection circuit 109 and reaches a sensor that performs photoelectric conversion. The defocus amount used for the focus calculation is obtained by calculating the output of the sensor. The camera CPU 123 (second control unit) is a control unit that evaluates a calculation result (focus calculation result) and communicates with the lens CPU 132. Further, as will be described later, the camera CPU 123 communicates with the lens device 100b (lens CPU 132 as the second control unit) to acquire image correction data unique to the lens device 100b.

  The lens CPU 132 (first control unit) instructs the AF driving unit 102 of the content communicated from the camera CPU 123 to drive the focus lens of the photographing lens 101. Further, as will be described later, the lens CPU 132 is a control unit that transmits image correction data stored in the nonvolatile memory 133 (first storage unit) to the imaging apparatus 100a.

  Reference numeral 110 denotes a focal plane shutter. Reference numeral 111 denotes a shutter drive circuit that drives the focal plane shutter 110. The opening time of the focal plane shutter 110 is controlled by the camera CPU 123.

  Reference numeral 112 denotes an image sensor. The image sensor 112 includes a CCD or a CMOS sensor, and is a photoelectric conversion element that converts a subject image formed by the photographing lens 101 into an electric signal (analog signal). Reference numeral 113 denotes a clamp circuit. Reference numeral 114 denotes an AGC circuit. The clamp circuit 113 and the AGC circuit 114 perform basic analog signal processing before A / D conversion. The clamp level of the clamp circuit 113 and the AGC reference level of the AGC circuit 114 are changed by the camera CPU 123.

  Reference numeral 115 denotes an A / D converter. The A / D converter 115 converts the analog signal output from the image sensor 112 into a digital signal. Reference numeral 116 denotes a video signal processing circuit. The video signal processing circuit 116 is realized by a logic device such as a gate array. Reference numeral 117 denotes an EVF drive circuit. Reference numeral 118 denotes an EVF monitor (electronic viewfinder monitor). Reference numeral 119 denotes a memory controller. Reference numeral 120 denotes a memory. Reference numeral 121 denotes an external interface that can be connected to an external device such as a computer. Reference numeral 122 denotes a buffer memory.

  The video signal processing circuit 116 (image processing unit) performs various kinds of image processing such as filter processing, color conversion processing, and gamma processing on the digitized image data, and also performs compression processing such as JPEG. The video signal processing circuit 116 corrects the captured image (performs image correction processing) using the image correction data. Image data that has undergone various types of image processing by the video signal processing circuit 116 is output to the memory controller 119. The video signal processing circuit 116 can also output a video signal from the image sensor 112 or image data input in reverse from the memory controller 119 to the EVF monitor 118 through the EVF drive circuit 117. Switching between these functions is performed according to an instruction from the camera CPU 123. The video signal processing circuit 116 can output information such as exposure information and white balance of the signal from the image sensor 112 to the camera CPU 123 (microcomputer) as necessary.

  The camera CPU 123 instructs white balance and gain adjustment based on these pieces of information. In the case of the continuous shooting operation, shooting data is temporarily stored in the buffer memory 122 as an unprocessed image. Then, unprocessed image data is read through the memory controller 119, and image processing and compression processing are performed by the video signal processing circuit 116 to perform continuous shooting. The number of continuous image shootings depends on the size of the buffer memory 122.

  The memory controller 119 stores unprocessed digital image data input from the video signal processing circuit 116 in the buffer memory 122 and stores the processed digital image data in the memory 120. Conversely, the memory controller 119 outputs image data from the buffer memory 122 or the memory 120 to the video signal processing circuit 116. The memory 120 may be removable. The memory controller 119 can output an image stored in the memory 120 via an external interface 121 that can be connected to an external device such as a computer.

  Reference numeral 123 denotes a camera CPU (microcomputer, second control unit). The camera CPU 123 controls the video signal processing circuit 116 to correct the captured image (perform image correction processing) using the image correction data stored in the nonvolatile memory 130 (second storage unit). Reference numeral 124 denotes an operation member. The operation member 124 is provided for instructing the camera CPU 123. The operation member 124 is configured to transmit its state to the camera CPU 123, and the camera CPU 123 controls each part in accordance with a change in the state of the operation member 124. Reference numeral 125 denotes a switch 1 (hereinafter referred to as “SW1”). Reference numeral 126 denotes a switch 2 (hereinafter referred to as “SW2”). The switches SW1 and SW2 are switches that are turned on / off based on the operation of the release button, and are each one of the input switches of the operation member 124. When only the switch SW1 is on, the release button is half-pressed. In this state, an autofocus operation is performed and a photometry operation is performed. On the other hand, when the switches SW1 and SW2 are both on, the release button is fully pressed, and the release button for recording an image is on. In this state, shooting is performed. Further, the continuous shooting operation is performed while the switches SW1 and SW2 are kept on. In addition to the switches SW1 and SW2, switches (not shown) such as an ISO setting button, an image size setting button, an image quality setting button, and an information display button are connected to the operation member 124, and the state of each switch is detected. To do.

  Reference numeral 127 denotes a liquid crystal driving circuit. Reference numeral 128 denotes an external liquid crystal display member. Reference numeral 129 denotes an in-finder liquid crystal display member. The liquid crystal driving circuit 127 drives the external liquid crystal display member 128 or the in-finder liquid crystal display member 129 in accordance with the display content command of the camera CPU 123. The in-viewfinder liquid crystal display member 129 is provided with a backlight such as an LED (not shown). This LED is also driven by the liquid crystal driving circuit 127. The camera CPU 123 confirms the capacity of the memory 120 through the memory controller 119 based on the predicted value data of the image size corresponding to the ISO sensitivity, the image size, and the image quality set before shooting, and then determines the remaining number of images that can be shot. Calculate. The remaining shootable number is displayed on the external liquid crystal display member 128 or the finder liquid crystal display member 129 as necessary.

  Further, a firmware update screen as shown in FIG. 7 is displayed on the external liquid crystal display member 128 or the finder liquid crystal display member 129. In the case of firmware update (firmware update), for example, a version 801 for a camera (imaging device) and a version 802 for a lens (lens device) are displayed. Among these, the firmware update of the lens device 100b is started by selecting the version 802 for the lens device with the operation member 124 or the like.

  Reference numeral 130 denotes a nonvolatile memory (EEPROM). The nonvolatile memory 130 can store data even when the camera (imaging device 100a) is not turned on. The nonvolatile memory 130 stores image correction data acquired from the lens device 100b and ID information of the lens device 100b. Reference numeral 131 denotes a power supply unit. The power supply unit 131 supplies power necessary for each IC and drive system.

  Reference numeral 132 denotes a lens CPU (microcomputer) provided in the lens apparatus 100b. The lens CPU 132 communicates with the camera CPU 123 to perform data transmission / reception and control of the AF driving unit 102, the zoom driving unit 103, and the aperture driving unit 105. Reference numeral 133 denotes a nonvolatile memory (storage unit) provided in the lens apparatus 100b. The non-volatile memory 133 stores image correction data unique to the lens device 100b. As described above, the lens-specific image correction data stored in the nonvolatile memory 133 is stored in the nonvolatile memory 130 by communication between the lens CPU 132 and the camera CPU 123 as necessary.

  In the present embodiment, the imaging apparatus 100a is configured to perform a firmware update in accordance with a user operation while the lens apparatus 100b is mounted. The firmware update is a process (a process for performing rewriting or addition) of updating the firmware of the lens apparatus mounted on the imaging apparatus to the latest in an imaging apparatus in which various lens apparatuses can be mounted. This firmware includes, for example, image correction data, but is not limited to this.

  Next, with reference to FIG. 2, the control method of the imaging system in Embodiment 1 of the present invention, that is, the processing when the lens device 100b (interchangeable lens) is attached to the imaging device 100a (camera body) will be described. FIG. 2 is a flowchart illustrating a control method of the imaging system in the present embodiment. The flowchart of FIG. 2 is executed based on a program stored in the camera CPU 123.

  First, in step S201, the camera CPU 123 detects that the lens device 100b is attached to the imaging device 100a based on a signal from the lens CPU 132. In step S <b> 202, the camera CPU 123 acquires image correction data unique to the lens device 100 b from the lens CPU 132. At this time, the lens CPU 132 of the lens device 100 b reads the image correction data stored in the nonvolatile memory 133 in response to a request from the camera CPU 123 and performs data communication with the camera CPU 123. Thereafter, in step S203, the camera CPU 123 stores the image correction data acquired from the lens CPU 132 in the nonvolatile memory 130 (storage unit).

  Subsequently, in step S204, the camera CPU 123 determines whether or not the user has performed an erasing operation on the image correction data stored in the nonvolatile memory 130. The erasing operation by the user is performed at the time of firmware update. If it is determined in step S204 that the image correction data erasing operation has not been performed, the process proceeds to step S207, and this flow ends. At this time, the image correction data stored in the nonvolatile memory 130 of the imaging device 100a is maintained as it is.

  On the other hand, if the user has performed an operation for deleting the image correction data in step S204, the process proceeds to step S205. In step S205, the camera CPU 123 deletes the image correction data stored in the nonvolatile memory 130 (storage unit) (or overwrites predetermined deletion data). Thereafter, the process proceeds to step S206, and the camera CPU 123 communicates with the lens CPU 132 to reacquire image correction data stored in the nonvolatile memory 133 of the lens device 100b attached to the imaging device 100a. The re-acquired image correction data is stored (updated) in the nonvolatile memory 130. After re-acquisition of the image correction data, the process proceeds to step S207, and this flow is terminated.

  Note that in this embodiment, step S206 is not essential, and in step S205, the camera CPU 123 may end this flow by erasing the image correction data stored in the nonvolatile memory 130. Further, the image correction data can be reacquired in step S206 without going through the erasing step in step S205. In this case, the image correction data is updated by overwriting the re-acquired image correction data on the image correction data stored in the nonvolatile memory 130.

  As described above, in this embodiment, the camera CPU 123 erases the image correction data stored in the nonvolatile memory 130 based on the instruction from the operation member 124 when the firmware update of the lens apparatus 100b is performed. At this time, the camera CPU 123 re-acquires the image correction data by communicating with the lens device 100b (the lens CPU 132 retransmits the image correction data), and updates the image correction data stored in the nonvolatile memory 130. It may be. As a result, the image correction data stored before re-acquisition is deleted.

  According to the present embodiment, at the time of the firmware update, the user performs an erasing operation (or an updating operation) of the image correction data stored in the storage unit of the imaging device. Therefore, the camera CPU 123 can perform an image correction process using appropriate image correction data in accordance with a user operation.

  Next, with reference to FIG. 3, the control method of the imaging system in Embodiment 2 of the present invention, that is, the processing when the lens device 100b (interchangeable lens) is attached to the imaging device 100a (camera body) will be described. FIG. 3 is a flowchart illustrating a control method of the imaging system in the present embodiment. The flowchart of FIG. 3 is executed based on a program stored in the camera CPU 123.

  First, in step S301, the camera CPU 123 detects that the lens device 100b is attached to the imaging device 100a based on the signal from the lens CPU 132. In step S <b> 302, the camera CPU 123 acquires image correction data unique to the lens device 100 b from the lens CPU 132. At this time, the lens CPU 132 of the lens device 100 b reads the image correction data stored in the nonvolatile memory 133 in response to a request from the camera CPU 123 and performs data communication with the camera CPU 123. Thereafter, in step S303, the camera CPU 123 saves the image correction data acquired from the lens CPU 132 in the nonvolatile memory 130 (storage unit).

  Subsequently, in step S304, the camera CPU 123 determines whether the image correction data acquired from the lens CPU 132 in step S302, that is, the image correction data stored in the nonvolatile memory 130 in step S303 is inappropriate data. Determine. Here, the inappropriate data is data in which the image correction data (image correction data stored in the nonvolatile memory 130) acquired from the lens CPU 132 is destroyed. Whether or not the data is inappropriate is whether the format of the stored image correction data is correct, whether the size of the image correction data is within a predetermined range, or whether there is a checksum error included in the image correction data , Etc. (validity check).

  In step S304, when the image correction data is appropriate data, the process proceeds to step S307, and this flow ends. At this time, the image correction data stored in the nonvolatile memory 130 of the imaging device 100a is maintained as it is.

  On the other hand, if the image correction data is inappropriate in step S304, the process proceeds to step S305. In step S305, the camera CPU 123 deletes the image correction data stored in the nonvolatile memory 130 (storage unit) (or overwrites predetermined deletion data). Thereafter, the process proceeds to step S306, where the camera CPU 123 communicates with the lens CPU 132 to re-acquire image correction data stored in the nonvolatile memory 133 of the lens device 100b attached to the imaging device 100a. The re-acquired image correction data is stored (updated) in the nonvolatile memory 130. After re-acquisition of the image correction data, the process proceeds to step S307, and this flow ends.

  Note that in this embodiment, step S306 is not essential, and in step S305, the camera CPU 123 may end this flow by erasing the image correction data stored in the nonvolatile memory 130. Further, the image correction data can be reacquired in step S306 without going through the erasing step in step S305. In this case, the image correction data is updated by overwriting the re-acquired image correction data on the image correction data stored in the nonvolatile memory 130.

  As described above, when the camera CPU 123 determines that the image correction data stored in the nonvolatile memory 130 is inappropriate data (incorrect data) during the firmware update of the lens apparatus 100b, the nonvolatile memory 130 Erase the image correction data stored in. At this time, the camera CPU 123 may re-acquire the image correction data by communicating with the lens device 100 b and update the image correction data stored in the nonvolatile memory 130.

  According to the present embodiment, when the image correction data stored in the storage unit of the imaging apparatus is inappropriate image correction data, the image correction data is deleted (or overwritten or updated). For this reason, it is possible to prevent the camera CPU 123 from performing image correction processing based on inappropriate (incorrect) image correction data.

  Next, with reference to FIG. 4, a control method of the imaging system according to the third embodiment of the present invention, that is, processing when the lens device 100 b (interchangeable lens) is attached to the imaging device 100 a (camera body) will be described. FIG. 4 is a flowchart illustrating a control method of the imaging system in the present embodiment. The flowchart of FIG. 4 is executed based on a program stored in the camera CPU 123.

  First, in step S401, when the camera CPU 123 detects that the lens device 100b is attached to the imaging device 100a based on a signal from the lens CPU 132, the imaging device 100a is activated. In step S402, the camera CPU 123 starts communication with the lens CPU 132, and acquires the ID (lens ID) of the mounted lens apparatus 100b and the format (communication version) of the image correction data.

  Subsequently, in step S403, the camera CPU 123 checks the type of the lens device 100b based on the lens ID acquired in step S402. That is, it is determined whether or not the mounted lens device 100b corresponds to the imaging device 100a. In step S403, if the type of the lens device 100b corresponds to the imaging device 100a, the process proceeds to step S204. In step S204, the camera CPU 123 determines whether the format (communication version) of the image correction data (optical aberration correction data for image processing) of the lens device 100b corresponds to the image processing system of the imaging device 100a.

  When the format of the image correction data corresponds to the image processing system of the imaging device 100a in step S405, the process proceeds to step S405. In step S405, the camera CPU 123 reads the lens ID corresponding to the image correction data stored in the nonvolatile memory 130 in the imaging device 100a from the nonvolatile memory 130. In step S406, the camera CPU 123 uses the lens ID of the image correction data stored in the nonvolatile memory 130 of the imaging device 100a and the lens ID acquired in step S202 (the lens ID of the currently mounted lens device). Compare. As a result of the comparison, if these lens IDs match, the process proceeds to step S413.

  In step S406, when the lens ID acquired by communication in step S402 and the lens ID stored in the nonvolatile memory 130 of the imaging device 100a do not match, the process proceeds to step S407 to newly acquire image correction data. In step S407, the camera CPU 123 acquires the size of the image correction data (aberration correction data) from the lens device 100b (lens CPU 132). In step S408, the camera CPU 123 determines whether the size of the acquired image correction data is an appropriate size for the image correction process.

  In step S408, when the camera CPU 123 determines that the size of the image correction data is appropriate, the process proceeds to step S410. In step S410, image correction data is acquired from the lens apparatus 100b (lens CPU 132), and the acquired image correction data is stored in the nonvolatile memory 130 (storage unit). In step S413, the camera CPU 123 determines whether the acquisition of the image correction data from the lens device 100b and the saving to the nonvolatile memory 130 have been completed normally. If acquisition of image correction data and storage in the nonvolatile memory are normally completed in step S413, the process proceeds to step S416, and the startup process of the imaging device 100a is completed.

  On the other hand, if the type of the lens device 100b does not correspond to the imaging device 100a in step S403, the process proceeds to step S412 to cut off the power supply to the lens device 100b and end the communication between the camera CPU 123 and the lens CPU 132. To do. At this time, a warning message to the user is displayed on the external liquid crystal display member 128 or the finder liquid crystal display member 129. Thereafter, the process proceeds to step S413. Similarly, if the communication version of the image correction data is different in step S404, or if the size of the image correction data is not appropriate in step S408, the process proceeds to steps S409 and S411, respectively. Then, the power supply to the lens device 100b is cut off, and the communication between the camera CPU 123 and the lens CPU 132 ends. At this time, a warning message to the user is displayed on the external liquid crystal display member 128 or the finder liquid crystal display member 129. Thereafter, the process proceeds to step S413.

  If it is determined in step S413 that the image correction data has not been acquired and stored in the nonvolatile memory, the process proceeds to step S414. In step S414, the camera CPU 123 determines whether there is a communication error or a checksum error. If there is no communication error or checksum error in step S414, the process returns to step S413. On the other hand, if there is a communication error or a checksum error, a warning message to the user is displayed on the external liquid crystal display member 128 or the in-finder liquid crystal display member 129 in step S415. Then, the process proceeds to step S416, and the activation process of the imaging device 100a is completed.

  As described above, when the camera CPU 123 determines that the image correction data acquired by communicating with the lens device 100 b is inappropriate, the camera CPU 123 does not store the image correction data in the nonvolatile memory 130. Instead, a warning message is displayed on the display unit (external liquid crystal display member 128 or finder liquid crystal display member 129). At this time, the camera CPU 123 determines whether or not the image correction data is inappropriate based on whether the lens apparatus 100b is compatible with the imaging apparatus 100a, the format (communication version) of the image correction data, and the size. judge. Further, it may be determined whether or not the image correction data is appropriate according to the checksum state, and a warning message may be displayed without storing the image correction data in the nonvolatile memory 130 according to the determination result. .

  Next, with reference to FIG. 5, the control method of the imaging system in Example 4 of this invention is demonstrated. FIG. 5 is a flowchart showing a control method of the imaging system in the present embodiment, and shows steps after displaying a warning message to the user in each of steps S209, S211, S212, and S215 of FIG. .

  In FIG. 5, step S501 corresponds to each of steps S209, S211, S212, and S215 in FIG. 4, and is the starting point of this flow. In step S501, when the camera CPU 123 displays a warning message, the process proceeds to step S502. In step S502, the camera CPU 123 instructs the power supply unit 131 (power supply module) to cut off the power supply to the lens device 100b, and cuts off the power supply to the lens device 100b. Then, the process proceeds to step S503, and the activation process of the imaging device 100a is completed. As described above, in this embodiment, the camera CPU 123 displays the warning message on the display unit, and then cuts off the power supply to the lens device 100b.

  Next, with reference to FIG. 6, the control method of the imaging system in Example 5 of this invention is demonstrated. FIG. 6 is a flowchart showing a control method of the imaging system in the present embodiment, and shows steps after displaying a warning message to the user in each of steps S209, S211, S212, and S215 of FIG. .

  In FIG. 6, step S601 corresponds to each of steps S209, S211, S212, and S215 of FIG. 4, and is the starting point of this flow. In step S601, when the camera CPU 123 displays a warning message, the process proceeds to step S602. In step S602, the camera CPU 123 waits for a warning message display cancel operation from the user. If there is no operation for canceling the display of the total message from the user, step S602 is repeated until the canceling operation is performed. On the other hand, if the release operation is performed by the user, the process proceeds to step S603 to enter a shooting preparation state and transition to a shooting ready state. Then, the process proceeds to step S503, and the activation process of the imaging device 100a is completed. As described above, in this embodiment, the camera CPU 123 cuts off the power supply to the lens apparatus 100b, and then restarts the power supply to the lens apparatus 100b by a warning canceling operation via the operation member 124, and transitions to the shooting preparation state. To do.

  According to the imaging systems of the above embodiments, it is possible to erase erroneously stored (inappropriate) image correction data or warn the user that image correction processing cannot be performed. Therefore, according to each embodiment, it is possible to provide an imaging device, a lens device, and an imaging system that prevent erroneous image correction processing.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment, A various deformation | transformation and change are possible within the range of the summary.

100 Imaging System 100a Imaging Device 100b Lens Device 116 Video Signal Processing Circuit 123 Camera CPU
124 Operation member 130 Non-volatile memory

Claims (11)

An imaging device to which a lens device can be attached,
A controller that acquires image correction data specific to the lens device by communicating with the lens device;
A storage unit for storing the image correction data acquired by the control unit;
An image processing unit that corrects a captured image using the image correction data;
An operation member for giving an instruction to the control unit,
The control unit erases the image correction data stored in the storage unit based on an instruction from the operation member when updating the firmware of the lens device.   The control unit re-acquires the image correction data by communicating with the lens device based on an instruction from the operation member when the firmware update of the lens device is performed, and is stored in the storage unit The imaging apparatus according to claim 1, wherein the image correction data stored before re-acquisition is deleted by updating the image correction data. An imaging device to which a lens device can be attached,
A controller that acquires image correction data specific to the lens device by communicating with the lens device;
A storage unit for storing the image correction data acquired by the control unit;
An image processing unit that corrects a captured image using the image correction data,
When the control unit determines that the image correction data stored in the storage unit is inappropriate data during firmware update of the lens device, the control unit stores the image correction data stored in the storage unit. An imaging apparatus characterized by erasing.   When determining that the image correction data stored in the storage unit is inappropriate when the firmware update of the lens device is performed, the control unit communicates with the lens device to perform the image correction. The imaging according to claim 3, wherein the image correction data stored before the re-acquisition is erased by re-acquiring data and updating the image correction data stored in the storage unit. apparatus.   When the control unit determines that the image correction data acquired by communicating with the lens device is inappropriate, a warning message is displayed on the display unit without storing the image correction data in the storage unit. The image pickup apparatus according to claim 3 or 4, wherein the image pickup apparatus is displayed.   The control unit determines whether or not the image correction data is inappropriate based on at least one of a format, a size, and a checksum state of the image correction data. The imaging device according to any one of 3 to 5.   The imaging apparatus according to claim 5, wherein the control unit cuts off power supply to the lens apparatus after displaying a warning message on the display unit.   The power supply to the lens device is restarted by a warning canceling operation via an operation member after the power supply to the lens device is cut off, and the control unit shifts to a photographing preparation state. 8. The imaging device according to 7. A lens device that can be attached to an imaging device,
A storage unit for storing image correction data unique to the lens device;
A control unit that transmits the image correction data stored in the storage unit to the imaging device,
The control unit retransmits the image correction data by communicating with the imaging device based on an instruction from an operation member of the imaging device when a firmware update of the lens device is performed. Lens device to do. An imaging system configured by mounting a lens device on an imaging device,
The lens device is
A first storage unit for storing image correction data unique to the lens device;
A first control unit that transmits the image correction data stored in the storage unit to the imaging device;
The imaging device
A second control unit that acquires the image correction data from the lens device by communicating with the first control unit;
A second storage unit that stores the image correction data acquired by the second control unit;
An image processing unit that corrects a captured image using the image correction data;
An operation member for giving an instruction to the second control unit,
The second control unit deletes the image correction data stored in the second storage unit based on an instruction from the operation member when the firmware of the lens apparatus is updated. system. An imaging system configured by mounting a lens device on an imaging device,
The lens device is
A first storage unit for storing image correction data unique to the lens device;
A first control unit that transmits the image correction data stored in the storage unit to the imaging device;
The imaging device
A second control unit that acquires the image correction data from the lens device by communicating with the first control unit;
A second storage unit that stores the image correction data acquired by the second control unit;
An image processing unit that corrects a captured image using the image correction data,
When the second control unit determines that the image correction data stored in the second storage unit is inappropriate data during firmware update of the lens apparatus, the second control unit stores the image correction data in the second storage unit. An image pickup apparatus for erasing the image correction data.