A camera body at which an interchangeable lens, holding a plurality of sets of optical characteristics data, each expressing specific optical characteristics in one of a plurality of representation formats, can be detachably mounted, includes: an identification information reception unit that receives lens-side identification information from the interchangeable lens, which indicates the plurality of representation formats; an identification information storage unit in which body-side identification information indicating each representation format that the camera body is capable of recognizing among the plurality of representation formats, is stored; a selection unit that selects a single representation format included in both the lens-side and the body-side identification information, among the plurality of representation formats; a request unit that issues a request to the interchangeable lens for the optical characteristics data corresponding to the selected representation format; and an optical characteristics reception unit that receives the requested optical characteristics data from the interchangeable lens.