Camera system, camera body, and communication method for acquiring lens information

A camera body from which an interchangeable lens is freely detachable, the camera body comprising:

• a body-side communication processor that performs communication with the mounted interchangeable lens;
• a body-side control processor that transmits in every frame a first request signal relating to acquisition of lens information to the interchangeable lens via the body-side communication processor in synchronization with a frame of a video in a video recording mode, the body-side control processor limiting the number of transmissions of the first request signal transmitted to the interchangeable lens in a period of one frame of a video less than the number of transmissions of the request signal that can be required in a period of one frame of the video;
• and
• a digital signal processing processor that performs image processing on each frame of the video using the response signal corresponding to transmitted the first request signal.

A communication method between a camera body and an interchangeable lens mounted on the camera body,

• wherein the camera body transmits in every frame a first request signal relating to acquisition of lens information to the interchangeable lens in synchronization with a frame of a video in the video recording mode,
• the interchangeable lens transmits a response signal to the first request signal to the camera body;
• the camera body transmits the first request signal that is transmitted in a period of one frame of a video in the video recording mode with the limited number of transmissions of the first request signal less than the number of transmissions of the request signal that can be required in a period of one frame of the video;
• and
• the camera body performs image processing on each of the video using the response signal corresponding to transmitted the first request signal.