How to increase gamma9/2/2023 ![]() ![]() ![]() ![]() The sRGB space represents color values in an approximate gamma 2.2 space. Thus, the well-known 2.2 gamma value has a built-in dim viewing environment assumption. To provide a correct subjective response in this environment, video signals are typically precompensated, treating the CRT as if it has a gamma value of 2.2. CRTs are frequently used for viewing video in a dim environment. The story is somewhat more complicated though, as there is a subjective aspect to the human perception of brightness (actually lightness), that is influenced by the viewing environment. The gamma value for a CRT display is somewhat dependent on the exact characteristics of the device, but the nominal value is 2.5. Displayed ramp intensity with gamma correction.
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