Patent ID: 8311407

Claim:
A camera system comprising an interchangeable lens and a camera body, the interchangeable lens comprising: a focus lens operable to move back and forth in an optical axis direction to change a focus status of a subject image; a driver operable to drive the focus lens; and a lens controller operable to control an operation of the interchangeable lens based on control signals received from the camera body, the camera body comprising: an imaging unit operable to image a subject at a predetermined frame rate to generate image data; a timing signal generator operable to generate a predetermined timing signal and transmit the predetermined timing signal to the interchangeable lens; a drive signal transmission unit operable to transmit a drive information signal including information of a driving time which is a period from a start of driving the focus lens to an end of driving the focus lens; and a body controller operable to control an operation of the camera body, wherein the body controller is operable to perform control to transmit the timing signal and the drive information signal to the interchangeable lens, and wherein the lens controller controls drive of the focus lens based on the drive information signal and the timing signal received from the camera body.