ISO/CIE DIS 11664-2
Colorimetry — Part 2: CIE standard illuminants
|Publication Date:||13 February 2020|
|ICS Code (Colours and measurement of light):||17.180.20|
This document specifies three CIE standard illuminants for use in colorimetry: CIE standard illuminant A for the representation of typical tungsten-filament lighting, CIE standard illuminant D65 for the representation of average daylight having a correlated colour temperature of approximately 6 500 K, and CIE standard illuminant D50 for the representation of daylight with a correlated colour temperature of approximately 5 000 K. Values of the relative spectral power distribution of the three illuminants are included in this document.