Gamma

What is gamma?

(Gamma in French: gamma) Gradation adjustment of a monitor; describes the relation of the decimal logarithm of the output to the input values (y = lg o / lg i), specifically of the RGB values of the input signal to the resulting luminances of the RGB monitor pixels. In Microsoft the value 2.2 is generated, from Apple OS X 10.6 also on the Macintosh, which up until this OS worked with 1.8. For soft copy proof monitors, the Fogra recommends 1.8 or “L-Star” gamma (brightness component L* from CIELAB) in accordance with the gradation in the eciRGB color space. For example K-Flow SMARtt or wobe-team proof servers optimize at L* for the hardware calibration of wide-gamut soft copy proof monitors.