Patent ID: 8797447

Claim:
A camera system, comprising: an interchangeable lens unit having an imaging optical system configured to form an optical image of a subject, a focus adjuster configured to optically adjust the focus state of the optical image, and a lens controller configured to control the operation of the focus adjuster; and a camera body having an imaging unit configured to convert the optical image of the subject into an image signal and configured to acquire an image of the subject, a focus detector configured to detect the focus state of the optical image by contrast detection method on the basis of the image signal, and a body controller configured to control the operation of the imaging unit and with which information can be exchanged with the lens controller, wherein the lens controller has lens information related to the interchangeable lens unit, the lens information includes information on whether or not a method for driving the focus adjustment of the interchangeable lens unit is compatible with wobbling, the body controller, based on the lens information, is configured to decide whether or not the interchangeable lens unit is compatible with wobbling, so that a focusing performance can be set based on the decision made by the body controller.