GB/T 4639-2000 Cinematography-Monophonic 35mm negative photographic sound record on 35mm motion-picture film-Position and maximum width dimensions (English Version)
This standard specifies the position and maximum width of the sound track on the optical sound film of 35mm variable product monophonic film. This standard applies to monophonic 35mm film optical sound film.
GB/T 4639-2000 history
2000GB/T 4639-2000 Cinematography-Monophonic 35mm negative photographic sound record on 35mm motion-picture film-Position and maximum width dimensions