US 12,332,545 B2
Accessory having function of performing reproduction driving of focus lens, control method and memory medium
Hideya Takanashi, Kanagawa (JP); and Munenori Date, Tokyo (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Sep. 22, 2022, as Appl. No. 17/934,227.
Claims priority of application No. 2021-156457 (JP), filed on Sep. 27, 2021; and application No. 2021-156568 (JP), filed on Sep. 27, 2021.
Prior Publication US 2023/0101440 A1, Mar. 30, 2023
Int. Cl. G03B 13/36 (2021.01); G03B 17/14 (2021.01); H04N 23/55 (2023.01); H04N 23/66 (2023.01); H04N 23/69 (2023.01)
CPC G03B 13/36 (2013.01) [G03B 17/14 (2013.01); H04N 23/55 (2023.01); H04N 23/66 (2023.01); H04N 23/69 (2023.01)] 25 Claims
OG exemplary drawing
 
1. An accessory detachably attached between an interchangeable lens and an imaging apparatus, the accessory comprising:
a communication unit configured to communicate with the interchangeable lens and the imaging apparatus;
a first operation unit configured to be operated in a case where focus position information on the interchangeable lens is to be acquired from the interchangeable lens;
a memory unit configured to store information relating to focus of the interchangeable lens based on the focus position information;
a second operation unit configured to be operated in a case where reproduction driving is to be performed of a focus lens included in the interchangeable lens; and
at least one processor configured to function as a control unit configured to control driving of the focus lens,
wherein in a case where the first operation unit is operated, the control unit acquires the information relating to focus by using the focus position information, and
wherein in a case where the second operation unit is operated, the control unit performs the reproduction driving of the focus lens by using the information relating to focus;
wherein the communication unit communicates with the interchangeable lens independently of a communication request from the imaging apparatus, while the first operation unit is being operated,
wherein in a case where a communication request from the imaging apparatus is executed at the same time as when the first operation unit is operated, the communication unit transmits, to the interchangeable lens, information acquired by adding a predetermined communication request to the communication request from the imaging apparatus and transmits, to the imaging apparatus, information acquired by removing information corresponding to the predetermined communication request from information acquired from the interchangeable lens.