| 摘要 |
A camera having a compact metering device to control film advancement and a double exposure prevention system which permits operation of the shutter when there is no film in the camera, but blocks the shutter's operation when the camera is loaded with film until an unexposed portion of the film is advanced to the point where it is suitably framed for taking a picture. A metering pawl moves rearwardly in the camera under the influence of a tension spring to permit operation of the shutter when the camera is unloaded. When the camera is loaded with film the member is engaged either with the film or with the film cartridge through a perforation in the film, thus preventing the camera from being operated until the film is suitably advanced to ready the camera for taking a picture.
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