ST 231:2004 - SMPTE Standard - For Motion-Picture Film (8-mm Type R) — Camera Aperture Image and Usage

(1.1) This standard specifies the dimensions of the camera aperture image and its relative position to the reference edge and the perforations of 8-mm type R motion-picture film. The location of the perforations is based on dimensions given in SMPTE 239. (1.2) This standard also specifies the position of the emulsion, the frame rate, and the orientation of the area being exposed for 8-mm type R film as used in a motion-picture camera.