Accessory apparatus for communicating with an image pickup apparatus,image pickup apparatus for communicating with an accessory appparatus, and imaging system providing techniques for communicating between an accessory apparatus and an image pickup apparatus

Abstract

An interchangeable lens serving as an accessory apparatus includes a power control unit configured to switch between a first power state where communication with a camera main body serving as an image pickup apparatus is possible and a second power state which provides smaller power consumption than the first power state. The interchangeable lens also includes a setting unit configured to switch a communication setting between a first setting corresponding to a first communication method that is a communication method used in an initial communication and a second setting corresponding to a second communication method different from the first communication method. In addition, in a case where the communication setting of the interchangeable lens is the second setting, the power control unit does not perform the switching from the first power state to the second power state.