Use this function to adjust a picture's colors, brightness, and contrast. To call up this function, use Edit | Adjust | Enhance Colors… [Ctrl+1] in the Manager or use Adjust | Enhance Colors… in the Editor.
This function offers: controls for editing the R, G, and B color channels, hue, saturation, vibrance, and lightness, and brightness and contrast, as well as a gamma correction control.
The Mode (Normal, Lights Online, Shadows Only) and Preserve colors controls affect gamma correction only. Preserve colors ensures that colors' hues will not change even after major brightening, so that the picture will not start to look "washed-out." During edits to color channels, this option ensures that the picture's overall brightness will be preserved.
This window also contains a function for Automatic Contrast.