ST 411:2006 - SMPTE Standard - For Motion-Picture Film — Cinematography — Spectral Response of Photographic Audio Reproducers for Analog Dye Sound-Tracks on 35-mm Film
This standard specifies the spectral response of the photographic audio reproducer light source and receptor as a unit, including any optical filtering that can be interposed. The analog sound-track formats suitable for reproduction using such a reproducer include the cyan dye-only track (without redevelopment of silver) and both conventional and “high magenta” sound-tracks (with redevelopment of ...