ST 146:2001 : For Motion-Picture Film — 16- and 8-mm Reversal Color Camera Films — Determination of Speed
The Society of Motion Picture and Television Engineers eBooks · 2001
(1.1) Specifications — This standard specifies a method for the determination of speed of 16-mm, 8-mm type R, and 8-mm type S reversal color camera films intended for direct projection in motion-picture photography. (1.2) Basic standard — ISO 2240 constitutes the basis for this standard.