What is Gamma Correction and how should I use it?
Color displays on monitors can vary substantially from system to system. When we are dealing with photo-realistic images, this can create problems where an image looks life-like on one monitor, but unrealistic on another. Currently, there is no “standard” that makes all display devices display colors exactly the same. Because of this, we need some way to “calibrate” our monitors to produce some degree of uniformity, such as setting the colors to match a standard color card. Gamma Correction alone will not calibrate a monitor completely, as it applies to the intensity (brightness) of a pixel, but not its hue. For the purposes of rendering and displaying images on screen, Gamma Correction does give us some degree of control to set up our systems to display images with a similar brightness on different monitors. If the images were to be displayed only on one system, then there would not be a problem. You could “tweak” the gamma (and other) settings on that system to get the desired result
