ISO 20859:2005 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" soundtracks (with redevelopment of silver).
Status: PublishedPublication date: 2005-06
Edition: 1Number of pages: 2
Technical Committee: ISO/TC 36 Cinematography
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