Patent ID: 8243188

Claim:
An imaging apparatus comprising: a camera body; and a lens unit which has a focusing lens for adjusting a focal position to bring a subject image into focus and which can be mounted on and removed from the camera body, the camera body including an imaging device which photographs a subject image formed by the lens unit, a control section for generating an instruction to provide movement control of the focusing lens along an optical axis, and a first transmission section for transmitting to the lens unit the instruction generated by the control section and a synchronization signal in response to the photographic timing of the imaging device, and the lens unit including a lens control section for moving the focusing lens along the optical axis according to the instruction generated by the control section, a position detection section for detecting the position of the focusing lens on the optical axis in response to the synchronization signal, and a second transmission section for transmitting position data on the focusing lens detected by the position detection section to the camera body, wherein the synchronization signal has the same period as a vertical synchronization signal of the imaging device and has shifted in phase from the vertical synchronization signal.