| 摘要 |
PURPOSE:To fit bayonet mounts of any of a centripetal operation system and an optical-axis directional operation system mutually by providing both position specifying recessed part for the former system and position specifying recessed part for the latter system. CONSTITUTION:A figure shows an interchangeable lens 70 viewed from its back. At a mount member 2'', three bayonet claws 3'', 4'', and 5'' are formed; a position specifying recessed part 7'' of a centripetal operation system is formed in the claw 3'', and a horseshoe-shaped position specifying recessed part 31'' of an optical-axis directional operation system is formed in the mount surface of the mount member 2''. Because of said position specifying structure, the bend part 18a of a lever 18 is fitted in the recessed part 7'' when this lens is mounted on a conventional camera body 10; and a pin 41 is fitted in the recessed part 31'' when it is mounted on a conventional camera body 40, thereby performing position specifying operation in a centripetal or optical-axis direction. |
