Patent ID: 8208057

Claim:
An imaging system comprising an interchangeable lens and a camera body, the interchangeable lens comprising: an optical system that includes a focus lens capable of moving backward and forward in an optical axis direction, and is operable to generate an optical image of an object, a first communication unit; and a lens controller operable to control drive of the focus lens; and the camera body comprising: a second communication unit capable of communicating with the first communication unit; an imaging element operable to generate an image signal from the optical image, and a main body controller operable to transmit a reference signal for providing a reference of a driving start timing of the focus lens, and delay time information indicating delay time with respect to the reference signal, to the lens controller through the second communication unit and the first communication unit, wherein the lens controller controls the focus lens to be driven at a timing obtained by delaying the timing provided by the reference signal by the delay time based on the reference signal and the delay time information received from the main body controller.