| 摘要 |
<p>A film drive (83) in a camera is actuated to advance a filmstrip (F) from a cartridge (C) to position respective frames on the filmstrip for exposure. Normally the film drive is disabled to prevent advancement of the filmstrip when the camera is in a non-picture taking or storage condition, as for example when an integral lens cover (1) of the camera is closed. An exception is created, however, whereby the film drive may be actuated to initialize a fresh film load by advancing the filmstrip to position its first frame for exposure even though the lens cover is closed. This is possible when respective sensor devices (SWC, SWF) in the camera determine that a cartridge is in the camera but the filmstrip has not been initialized. Exposure of the first frame on the filmstrip can not occur unless the lens cover is opened.</p> |
