| 摘要 |
PROBLEM TO BE SOLVED: To obtain an image of correct exposure, when setting a diaphragm diameter of an aperture diaphragm to image a subject, with respect to a camera system having a lens barrel that is interchangeable, and to provide the lens barrel. SOLUTION: A lens barrel 104 includes a diaphragm driving member 42 for changing the size of an aperture diaphragm 40, by driving an aperture diaphragm of a photographic optical system 38 and an information storage part 54 for storing error information, showing the difference between a set diaphragm value of the diaphragm driving member 42 and the actual value of the aperture diaphragm 40. A camera body 102 includes an imaging part 26 for imaging a subject image by the photographic optical system 38, an information acquisition part 34 for acquiring the error information from the information storage part 43, and a position correction part 34 for correcting a driving position of the diaphragm driving member 42, by using the error information acquired by the information acquisition part 34. COPYRIGHT: (C)2007,JPO&INPIT
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