- References
{{Use British (Oxford) English|date=December 2011}}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
References1. ^{{cite web|url=http://www.iso.org/iso/home/store/catalogue_ics/catalogue_detail_ics.htm?csnumber=52913|title=ISO 5-1:2009 - Photography and graphic technology -- Density measurements -- Part 1: Geometry and functional notation|author=|date=|website=www.iso.org}}
{{ISO standards}}{{Standard-stub}} 1 : ISO standards |