From EverybodyWiki Bios & Wiki

ISO 5 is an international standard for density measurements in photography and graphic technology. The most recent version split the standard into 4 parts:[1]

  • ISO 5-1:2009 Geometry and functional notation
  • ISO 5-2:2009 Geometric conditions for transmittance density
  • ISO 5-3:2009 Spectral conditions
  • ISO 5-4:2009 Geometric conditions for reflection density


  1. "ISO 5-1:2009 - Photography and graphic technology -- Density measurements -- Part 1: Geometry and functional notation".

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