SMPTE 411M – Motion-Picture Film – Cinematography – Spectural 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 receptoras a unit, including any optical filtering that can be interposed. The analog sound-track formats suitable forreproduction using such a reproducer include the cyan dye-only track (without redevelopment of silver) andboth conventional and “high magenta” sound-tracks (with redevelopment of silver).
