To provide a camera that is able to prevent defocus.

A camera 1 to which a plurality of interchangeable lenses 200 are selectively attached comprises storing means 116 configured such that a plurality of characteristic values of an interchangeable lens, which are determined according to a plurality of photographic states of the camera are stored so as to be associated with information identifying the interchangeable lens. The camera also includes focus detection means 108 configured such that based on a luminous flux via the optical system of the attached interchangeable lens, the focus adjustment state of the optical system is detected. The focus detection means corrects the focus adjustment state based on a characteristic value.