Chromaticity
The objective measurement of the colour of an object or light source.
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chromaticity
a color specification that is indicated by dominant wavelength and purity.
Chromaticity
The colour quality of light which is defined by the wavelength ( hue ) and saturation. Chromaticity defines all the qualities of colour except its brightness.
5) Chromaticity Diagram
An image could be considered to be monochromatic if it uses hues constrained within 30 degrees or less from one another. Analogous hues are within 60 degrees of one another. Complementary hues are 180 degrees apart.
This (u,v) chromaticity space became the CIE 1960 color space, which is still used to calculate the CCT (even though MacAdam did not devise it with this purpose in mind).
Colors in the chromaticity triangle are defined by hue and saturation (chroma) only, not by brightness. There can be any amount of brightness in the chromaticity triangle.
FILTER, NEUTRAL DENSITY-One not selective for a certain portion of the spectrum but absorbing all colors equally, thus reducing the intensity of light without changing its chromaticity.
Observations on the CIE 1931 chromaticity diagram:
The point where x = y = 1/3 is called the reference white (E white).
The coordinates x and y are artificial. They do not represent real colors in themselves.
Chrominance - The difference between a color and a specified reference color having a specified chromaticity.
Clipping - A defect in images, where the shadows cut off white or black, instead of fading out smoothly.
 See also: Light, Chroma, Color, Stand, Image
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