Tonal Response Curve - NEC SpectraView Profiler 5 User Manual

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4.7 Tonal response curve

Shades of gray from black to white will be reproduced in a specific way,
depending on the individual monitor. CRTs and LCDs are very differ-
ent in their native characteristics. In order to normalize the response
character monitor calibration corrects the tonal response curves to a
defined function.
L* (recommended)
Theoretically, the ideal color system for cross media publishing is L*a*b*.
It equals the characteristics of human color perception. So, it is logical
to combine the advantages of the L*a*b* with the representation of tone
values on a monitor.
The L* method calibrates your monitor in such a way that gray scales
appear visually equidistant. If you increase the R, G and B signals by
the factor 2, the displayed color will be doubled in brightness. This way
the RGB monitor space is optimally adapted to the human visual sensa-
tion.
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