Originally Posted by wmiles
I am trying to obtain the best possible picture on my 50A2000. Apparently getting the Bias and Gain settings just right make a huge difference in picture quality. I was hoping someone could explain the meaning of these two adjustments in hopes of obtaining a good picture quality. Please help.
Bias and Gain adjust the amount of that color that you see in dark and light areas respectively. Experts, like Dave Hancock, will tell you they are the intercept and slope. So Gain says how much the input value is amplified (slope) and Bias says what's the minimum value (intercept) (I think).
What this means in practical terms is that when you display a gray scale test pattern on your set (or turn the Color setting to zero) you will adjust the bias of your R, G, and B to get black and the dark grays all to be true gray, and, adjust the gain to get your white and light grays to be true gray.