US 12,010,421 B2
Accessory apparatus, control method, and storage medium
Atsushi Sugita, Kanagawa (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Oct. 11, 2022, as Appl. No. 17/963,261.
Claims priority of application No. 2021-168274 (JP), filed on Oct. 13, 2021.
Prior Publication US 2023/0113949 A1, Apr. 13, 2023
Int. Cl. H04N 23/663 (2023.01); G03B 13/36 (2021.01); H04N 23/67 (2023.01); G03B 17/14 (2021.01)
CPC H04N 23/663 (2023.01) [G03B 13/36 (2013.01); H04N 23/67 (2023.01); G03B 17/14 (2013.01)] 24 Claims
OG exemplary drawing
 
1. An accessory apparatus which is removably attached between an image capturing apparatus and an interchangeable lens, the accessory apparatus comprising:
one or more processors; and
a memory storing instructions which, when the instructions are executed by the one or more processors, cause the accessory apparatus to function as:
a communication unit configured to perform first communication with the image capturing apparatus and second communication with the interchangeable lens;
an operation unit configured to accept a predetermined operation for operating a predetermined function that assists an autofocus (AF) operation by the image capturing apparatus; and
a control unit configured to implement the predetermined function with respect to the AF operation by controlling transmission of a control command to the interchangeable lens through the second communication based on the predetermined operation and the control command for the AF operation accepted from the image capturing apparatus through the first communication,
wherein to control the transmission of the control command to the interchangeable lens, the control unit does not transmit a control amount included in the control command and pertaining to focus for the AF operation to the interchangeable lens, or changes the control amount and transmits the control amount changed to the interchangeable lens, in accordance with the predetermined operation.