Patent ID: 8390733
Filing Date: 2013-03-05
Classification: G02B,G03B,H04N

Abstract:
1. An imaging device for acquiring an image of a subject, comprising: an interchangeable lens including an imaging optical system arranged to form an optical image of the subject, and a lens controller configured to hold lens information including information related to a focal point detection method; and a camera body including an imaging part configured to convert an optical image of the subject into an image signal, a focal point detector configured to detect a contrast value on the basis of the image signal and configured to determine the focal state of the optical image on the basis of the contrast value, and a main body controller configured to acquire the lens information held in the lens controller and configured to select the focal point detection method on the basis of the lens information, the camera body allowing the interchangeable lens to be mounted, or allowing the interchangeable lens to be mounted via an adapter, the main body controller is configured to select a contrast detection method as the focal point detection method if the interchangeable lens is compatible with a contrast detection method and the interchangeable lens is attached to the camera body without an adapter, and the main body controller is configured to select a phase difference detection method as the focal point detection method if the interchangeable lens is not compatible with a contrast detection method, the interchangeable lens is attached to the camera body via an adapter and the adapter is compatible with a phase difference detection method.