| 摘要 |
PURPOSE:To prevent an interchangeable lens in an equipped state from contacting with a camera-side member, by providing a shunting mechanism to a signal transfer member for exposure control over the interchangeable lens and camera. CONSTITUTION:When an interchangeable lens is detached from a camera, the head of changeover signal transfer member 28 is fitted in hole 33b of bayonet member 33 at the camera side with the automatic settlement mode selected by aperture setting ring 14. As a result, the lens equipped is locked in the camera at two stages. While operation member 26 is depressed as shown by arrow A, the interchangeable lens is rotated in the opposite direction to arrow B to intrude member 28 and pin 25 into through-holes 2a and 2b of bayonet holding ring 2 against spring 27, disengaging the lens from bayonet members 3 and 33 of the camera. Then, operation lever 17 of the lens moves beyond driving member 35 at the camera side. |
