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Glossary of Terms
AdobeRGB
Default color space for computer displays.
Ambient Light
Light from any source, other than the display, that reaches the screen surface .
Brightness
Amount of light radiating from the screen.
Calibrate
To measure and correct by comparison with a standard, of the correct value or each
reading on a measuring instrument .
Candela
Basic unit of luminous intensity.
Color Temperature
Measurement of the color of white light, expressed in degrees Kelvin. The color
temperature is the color of light a perfect black-body radiator emits when heated to
the temperature. Computer monitors typically have a color temperature of 5000-
9300 Kelvin: 5000 Kelvin is a yellow-white, 9300 Kelvin is a blue-white and 6500
Kelvin is a standard white point that matches daylight at noon.
Contrast
Difference in color and/or brightness of an image and other images within the same
field of view.
Curves
Graph of tonal response characteristics in the display.
Gamma
Non-linear operation used to code and decode brightness values in an image.
Gamut
Refers to the complete set of colors which can be reproduced/captured by a device.
Kelvin
Kelvin scale is a measure of temperature, starting from absolute zero.
Luminance
Amount of light emitted or reflected from a surface.
NTSC
Default color space for television.
OSD
Abbreviation for “On-Screen Display”.
Profile
Data file used to define and match color.
Room Light
(See Ambient Light .)
Saturation
Intensity of a color, expressed as the degree to which it differs from white. Can also
be described as vividness or richness of a color.
sRGB
Default color space for the Internet.