This standard BS ISO 25:1994 Cinematography. Camera usage of 16 mm motion picture film specification is classified in these ICS categories:
37.060.20 Motion picture films. Cartridges
37.060.10 Motion picture equipment
This International Standard specifies the position of the emulsion, the frame rate of exposure, and the orientation of the emulsion area being exposed for 16 mm silent and sound motion-picture film perforated along one or both edges.