Canon Kabushiki Kaisha

Tomoki Tanaka

Hideya Takanashi

An accessory apparatus is removably attached between an image capturing apparatus and an interchangeable lens. The accessory apparatus performs first communication with the image capturing apparatus and second communication with the interchangeable lens, and accepts a predetermined operation related to a manual focus operation. The accessory apparatus sets a degree to which a drive amount of a focus lens in the interchangeable lens is made effective relative to an operation amount of the first operation unit, and transmits the drive amount or a drive speed of the focus lens in the interchangeable lens to the interchangeable lens through the second communication in accordance with the predetermined operation and the degree set.

Accessory apparatus, control method, and storage medium

A camera microcomputer receives first accessory attribute information of the accessory attribute information through the third communication channel by using a first communication method and then switches from the first communication method to a second communication method different from the first communication method, and controls communication so as to receive second accessory attribute information of the accessory attribute information through the third communication channel by using the second communication method.

Growing community of inventors

Kanagawa, Japan

Tomoki Tanaka