ISO/CIE 11664-2:2022

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Colorimetry - Part 2: CIE standard illuminants

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Colorimetry - Part 2: CIE standard illuminants

PUBLISH DATE 2022

This document defines 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.

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