| 摘要 |
<p>A camera of the type having interchangeable lenses of different focal length locatable along a picture-taking axis includes a diaphragm shutter movable along an operational path between (1) an initial, light-blocking position and (2) a terminal, light-unblocking position, the magnitude of the shutter opening being functionally related to the position of the shutter along its operational path. A control member operably couples the shutter to an aperture setting member which is actuatable over a range of positions each of which is indicative of a camera f-stop value related to anticipated scene light conditions. A stop mechanism operatively associated with the control member is adjustable in response to whichever lens is selected for varying the terminal position to establish an effective exposure aperture which is related to the position at which said setting member is set and lens focal length.</p> |
