Home / Standards / GB/T 4642-1984 GB/T 4642-1984 Active Image produced by 16mm motion-picture camera aperture--Position and dimensions 16mm电影摄影机片窗在胶片上所形成的影象位置和尺寸 Standard Type GBT ICS 37.060.20 CCS A15 Status 现行 Issue Date 1984-08-14 Implementation 1985-05-01 Responsible Dept 国家电影局 Drafting Unit N/A