To thin a camera in a photographing optical axis direction by attaching a photographic image plane frame to the film exposing position of a camera main body constituted by integrally molding a film transport guide part and a fixed photographing lens barrel.

An aperture part 2 is formed of a metallic thin plate forming the photographic image plane frame 2a and having notches for the film transport guide part 1d at four corners. A positioning hole 2f is fit to a positioning dowel 1f provided on the fixed photographing lens barrel 1b of the lens barrel of the camera main body 1 so as to align the aperture member 2, which is fixed by the through-hole 2g of a screw. The aperture member 2 is fixed on the lens barrel 1b, and a pressure plate is butted and fixed on the pressing plate attaching reference surface 1e of the lens barrel 1b, so that a tunnel amount by which film can pass through is secured between the aperture member 2 and the pressing plate 4. The behavior of the film in an up-and-down direction is regulated by the film transport guide parts 1d provided at four corners outside the photographing luminous flux path of the lens barrel 1b.