Howtosignalprocessing
- How is gamma correction implemented?
- What gamma should I set my monitor to?
- Should I have gamma on or off?
- How do I know if my gamma is too high?
How is gamma correction implemented?
Gamma correction is achieved by mapping the input values through a correction function, tailored to the characteristics of the display device, before sending them to the display device. The mapping function is often implemented using a lookup table, typically using a separate table for each of the RGB color components.
What gamma should I set my monitor to?
Gamma 2.2 has been the standard for Windows and Apple (since Mac OS X v10. 6 Snow Leopard). Using a monitor with a gamma level of 2.2 can produce almost optimal colors. This level provides the optimal balance for true color and is used as the standard for graphic and video professionals.
Should I have gamma on or off?
Gamma is important because it affects the appearance of dark areas, like blacks and shadows and midtones, as well as highlights. Monitors with poor gamma can either crush detail at various points or wash it out, making the entire picture appear flat and dull.
How do I know if my gamma is too high?
Gamma Too High
When the gamma is too high, the image looks much darker. The details in the dark areas of the image are completely lost. The black and white on the image aren't affected by the high gamma, but the colors are completely changed. The image might even look richer due to the enhanced contrast.
