Abstract: An underwater camera includes a housing supporting an exposure mechanism therein. The exposure mechanism includes a support frame and a conventional film transport and shutter mechanism. A motor drive system is operative upon the film transport and shutter mechanism to alternatively raise or lower the transport mechanism with respect to the camera imaging lens. A viewer is optically coupled to the imaging lens. In one position of the film transport, a focusing screen is positioned in alignment with the imaging lens to provide through the lens viewing while in the alternative position of the film transport, the to-be-exposed film and shutter assembly is interposed between the imaging lens and the viewer to properly expose the film.

Abstract: An autowinder for use with all weather or underwater cameras includes a sealed generally U-shaped housing having a threaded attachment to a camera body. An internal power source and bidirectional motor are supported within the housing and operatively coupled to the film advance mechanism of the camera by a drive belt system. A generally L-shaped lever is pivotally supported upon the autowinder body exterior and is operated in response to a trigger to actuate the shutter mechanism of the camera. A magnet is supported upon the L-shaped trigger arm and actuates the autowinder function within the housing. Magnetic limit switches are operative to control the direction and extent of motor operation to provide appropriate autowinding action.

Abstract: A film magazine for underwater cameras includes an outer housing attachable to an underwater camera. A seal is provided which seals the junction of the camera and film magazine. A pair of extended capacity film cannisters are supported within a film housing which in turn is received within the outer housing. A drive motor is operative upon the take-up film cannister and is controlled by a pivotal sensing lever which responds to film slack during the film transport operation of the camera.