Still picture camera and photographic method employing multiple film cassettes

A still picture camera for capturing images when film is alternately advanced from any one of three film cassettes into a common film gate for a controlled exposure by light passing through an objective lens and shutter, the camera comprising a camera body, an objective lens for forming an image, a shutter for controlled admission of light, a film gate for defining the area of exposure of one frame of photographic film, three film cassette chambers mounted in a rotating turret each accepting a film cassette, a turret rotation mechanism, a film advancement mechanism, and one film spooling chamber for alternately receiving film from any film cassette.