Patent ID: 9025076
Filing Date: 2015-05-05
Classification: G03B,H04N

Abstract:
1. An exchangeable lens detachably mounted at a camera body, comprising: an optical characteristics storage unit in which optical characteristics information pertaining to optical characteristics of the exchangeable lens including, at least, information pertaining to peripheral shading characteristics of the exchangeable lens, is stored; an optical characteristics information generation unit that generates information pertaining to optical characteristics of the exchangeable lens to be transmitted to the camera body based upon the optical characteristics information stored in the optical characteristics storage unit; and an optical characteristics transmission unit that transmits the information pertaining to the optical characteristics of the exchangeable lens, having been generated by the optical characteristics information generation unit, to the camera body, wherein: peripheral shading information for only some image heights is stored as the information pertaining to the peripheral shading characteristics of the exchangeable lens into the optical characteristics storage unit, but peripheral shading information for at least one image height position among five image height positions equivalent to integral multiples of y the optical characteristics information generation unit generates the peripheral shading information for the five image height positions to be transmitted to the camera body based upon the information pertaining to the peripheral shading characteristics of the exchangeable lens stored in the optical characteristics storage unit; and the optical characteristics transmission unit transmits the peripheral shading information for the five image height positions generated by the optical characteristics information generation unit.