Colorimetry

RUFF STUFF

CCT = Correlated Color Temperature (6500K, etc.)

CIE Illuminants =>

• General lighting conditions (when taking a picture, or displaying one).
• Spectral characteristics similar to natural light sources
• Reproducible in the laboratory

1931 Illuminants:

• Illuminant A = Typical Incandescent Light
• Illuminant B = Direct Sunlight
• Illuminant C = Average daylight from total sky (ambient sky light)

1963 Illuminants (more accurate daylight conditions):

• Illuminant D followed by the first 2 digits of the CCT (e.g. D65 = D 6500K)

References

An Introduction to Appearance Analysis (2001) http://www.color.org/ss84.pdf