Patent ID: 8126322

Claim:
A camera body to which an interchangeable lens is mountable, wherein: the interchangeable lens comprises: a zoom lens operable to change a size of a subject image; a zoom driver operable to drive the zoom lens along an optical axis; a focus lens operable to change a focus state of the subject image; a focus driver operable to drive the focus lens along the optical axis; and a storage unit operable to store link information which links position information indicating a position of the zoom lens on the optical axis with information about a variation in magnification caused by the focus lens advancing and retreating on the optical axis, the camera body comprises: a first obtaining unit operable to obtain the information from the interchangeable lens; and a generating unit operable to generate a control signal, wherein when a value indicated by the information about a variation in magnification is more than a predetermined value, the control signal is generated so that an amplitude of the focus lens advancing and retreating on the optical axis or a drive speed of the focus lens in automatic focus control becomes smaller than that in a case where the value indicated by the information about a variation in magnification is less than the predetermined value.