INTERCHANGEABLE LENS, CAMERA SYSTEM, IMAGING DEVICE, CONTROL METHOD FOR CAMERA SYSTEM, AND CONTROL METHOD FOR IMAGING DEVICE

摘要

An interchangeable lens (100) includes an optical system (102) which is variable in focal distance and in which a size of an image circle varies by the focal distance, the image circle being an effective image formation region of an optical image of a subject; a lens data storage unit (1121) which stores data indicating a correspondence between a value of the focal distance and a value of the size of the image circle; and a lens interface unit (114) which sends data indicating the correspondence to the imaging apparatus.