LuxUrbex - Urban Exploration and Urbex Photography in Luxembourg

With a properly adjusted monitor, you should be able to distinguish square 1 and 2 from square 0 and the surround for the dark squares at the top and the light squares at the bottom. All the squares in the center grayscale should be distinguishable and the steps should look evenly spaced. If your monitor doesn't meet this criteria, it needs adjustment. Follow these steps:

1. Warm up the monitor for 30-60 minutes. Select subdued room lighting, avoiding reflections of lights or windows on the monitor.
2. Under File > Preferences > Monitor Gamma, set all three color channels to 1.00.
3. Turn the contrast control, usually a half black/half white circle, all the way up.
4. Adjust the brightness control, usually a sun symbol, until you can differentiate the dark squares.
5. If necessary, adjust the contrast control to differentiate the light squares.
6. Mark the control positions and tape the controls in place.

Source: Jasc