# US 2021/0239934 A1 · Image pickup apparatus, lens apparatus, control method, and non-transitory computer-readable storage medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0239934 A1 - Document ID: US20210239934A1 - Status: Published application - Kind: A1 - Application number: 17/159,521 - Filed: 2021-01-27 - Published: 2021-08-05 - Earliest claimed: 2020-01-30 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Kazuto SUZUKI - Web page: https://patentgrep.com/patent/US20210239934A1 ## CPC - G02B 7/09: adapted for automatic focusing or varying magnification - G02B 7/28: Systems for automatic generation of focusing signals - G02B 7/105: with movable lens means specially adapted for focusing at close distances - G03B 13/32: Means for focusing - G03B 13/36: Autofocus systems - H04N 23/633: {for displaying additional information relating to control or operation of the camera} - H04N 23/663: for controlling interchangeable camera parts based on electronic image sensor signals - H04N 23/67: Focus control based on electronic image sensor signals - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract An image pickup apparatus (200) includes a display unit (204) capable of displaying an object distance in an optical system capable of performing first control in which a focus lens is automatically adjusted to an in-focus position and second control in which the focus lens is adjusted based on an operation amount of a user, and a controller (206) configured to control the display unit, and the controller is configured to control the display unit so that information corresponding to a current focus lens position and information on a first range in which the focus lens cannot be driven by the first control and the focus lens can be driven by the second control are displayed together. ## Claims ### Claim 1 An image pickup apparatus comprising: a display unit capable of displaying an object distance in an optical system capable of performing first control in which a focus lens is automatically adjusted to an in-focus position and second control in which the focus lens is adjusted based on an operation amount of a user; and a controller configured to control the display unit, wherein the controller is configured to control the display unit so that information corresponding to a current focus lens position and information on a first range in which the focus lens cannot be driven by the first control and the focus lens can be driven by the second control are displayed together. ### Claim 2 (depends on 1) The image pickup apparatus according to claim 1, further comprising a communication unit configured to communicate with a lens apparatus including the optical system, wherein the communication unit is configured to acquire display information for displaying the first range on the display unit from the lens apparatus. ### Claim 3 (depends on 2) The image pickup apparatus according to claim 2, wherein the display information changes based on a zoom position of the optical system. ### Claim 4 (depends on 2) The image pickup apparatus according to claim 2, wherein the display information changes based on an aperture value of the optical system. ### Claim 5 (depends on 1) The image pickup apparatus according to claim 1, wherein the display unit is configured to display the first range separately from a second range in which the focus lens can be driven by the first control. ### Claim 6 (depends on 5) The image pickup apparatus according to claim 5, wherein the display unit is configured to display the first range and the second range in different colors. ### Claim 7 (depends on 1) The image pickup apparatus according to claim 1, wherein the display unit is configured to notify that the focus lens is located in the first range. ### Claim 8 (depends on 7) The image pickup apparatus according to claim 7, wherein when the focus lens is located in the first range, at least a part of the display unit blinks. ### Claim 9 (depends on 1) The image pickup apparatus according to claim 1, wherein when the focus lens is adjusted by the second control, the display unit is configured to display the first range. ### Claim 10 (depends on 1) The image pickup apparatus according to claim 1, wherein the display unit is configured to display information on a distance from a shortest shooting distance to a predetermined object distance, the first range, the second range, and a current drivable range. ### Claim 11 (depends on 1) The image pickup apparatus according to claim 1, wherein when the current focus position is within the first range, the focus control does not start. ### Claim 12 A lens apparatus comprising: an optical system capable of performing first control in which a focus lens is automatically adjusted to an in-focus position and second control in which the focus lens is adjusted based on an operation amount of a user; a display unit capable of displaying an object distance in the optical system; and a controller configured to control the display unit, wherein the controller is configured to control the display unit so that information corresponding to a current focus lens position and information on a first range in which the focus lens cannot be driven by the first control and the focus lens can be driven by the second control are displayed together. ### Claim 13 A control method comprising: a first control step of performing one of first control in which a focus lens of an optical system is automatically adjusted to an in-focus position and second control in which the focus lens is adjusted based on an operation amount of a user; and a display step of controlling a display unit capable of displaying an object distance in the optical system, wherein the display step includes controlling the display unit so that information corresponding to a current focus lens position and information on a first range in which the focus lens cannot be driven by the first control and the focus lens can be driven by the second control are displayed together. ### Claim 14 (depends on 13) A non-transitory computer-readable storage medium storing a program which causes a computer to execute the control method according to claim 13. ### Claim 15 A lens apparatus removably attached to a camera body, the lens apparatus comprising: a focus lens; a controller configured to automatically adjust the focus lens to an in-focus position; and a communication unit capable of communicating with the camera body, wherein control of the focus lens by the controller is limited in a second drive range of the focus lens compared to a first drive range of the focus lens, and wherein the communication unit is configured to transmit, to the camera body, information on a change of the second drive range according to a change of a state of an optical member. ### Claim 16 (depends on 15) The lens apparatus according to claim 15, wherein the second drive range includes an MF dedicated range in which all functions of automatically adjusting the focus lens to the in-focus position are ineffective, wherein the communication unit is capable of transmitting, to the camera body, information on an AF limit range in which a part of the functions of automatically adjusting the focus lens to the in-focus position is limited, and wherein the communication unit is configured to transmit, to the camera body, information on the MF dedicated range as information on the AF limit range. ### Claim 17 (depends on 15) The lens apparatus according to claim 15, wherein the second drive range includes an AF limit range in which a part of functions of automatically adjusting the focus lens to the in-focus position is limited, and wherein the communication unit is configured to transmit, to the camera body, information on a change of the AF limit range according to the change of the state of the optical member. ### Claim 18 (depends on 15) The lens apparatus according to claim 15, wherein the state of the optical member is a zoom position. ### Claim 19 (depends on 15) The lens apparatus according to claim 15, wherein the state of the optical member is an aperture value. ### Claim 20 A method of controlling a lens apparatus removably attached to a camera body, the method comprising: a control step of automatically adjusting a focus lens to an in-focus position; and a communication step of communicating with the camera body, wherein control of the focus lens by the controller is limited in a second drive range of the focus lens compared to a first drive range of the focus lens, and wherein the communication step includes transmitting, to the camera body, information on a change of the second drive range according to a change of a state of an optical member. ### Claim 21 (depends on 20) A non-transitory computer-readable storage medium storing a program which causes a computer to execute the control method according to claim 20.