To composite a subject and a background by one shutter by controlling stroboscopes for a subject and for a background.

After the stroboscope for the subject emits light so as to photograph only the subject, a positive film for the background is instantaneously set on the front of film on which the subject is photographed. Simultaneously, the stroboscope for the background emits the light, and the positive film for the background is duplicated (copied) in a state where the subject is silhouetted then the composite photograph where the subject is superimposed on the background is taken. When the positive film for the background is set in a holder constituted by improving the rear part of a camera and a shutter is released, the holder is actuated and moved to a position where only the subject is photographed, Continuously, the holder is instantaneously restored to the front of the film again, and the positive film for the background is set to a position where it can be duplicated. A control box controls a time lag by using an IC and a relay so that the stroboscope for the background emits the light after the instant the stroboscope for the subject emits the light.