Patent ID: 8554068

Claim:
A camera system comprising: an interchangeable lens; and a camera body; wherein the camera body comprises: an imaging portion that picks up a subject image and generates image data continuously by starting and ending an exposure in accordance with a first timing signal generated periodically, and a timing signal sending portion that generates a second timing signal periodically by capturing timings for starting and ending the exposure at the imaging portion, and sends the second timing signal to the interchangeable lens, the interchangeable lens comprises: a focus lens that moves forward and backward along an optical axis direction, thereby varying a focusing state of the subject image, a position detection portion that detects a position of the focus lens, a timing signal receiving portion that receives the second timing signal from the camera body, and a lens control portion that controls an operation of the interchangeable lens, and the lens control portion performs a control to detect the position of the focus lens in accordance with the second timing signal received from the camera body.