In Pictures: TV Calibration - six tips for a bette...
Contrast and brightness go hand in hand. The correct blend of these two settings will determine how good colours look and how image subtleties appear, especially in dark areas. To start out, set the contrast to the maximum that it can go. In many cases, this is where it will stay but it may need to be reduced depending on your panel.
In Pictures: TV Calibration - six tips for a better image