Brightness And Contrast allows you to adjust the contrast and brightness of an image. This can be used to match rendered scene objects with background images or animations.
Above: Original rendering is too dark.
Below: Increasing both brightness and contrast improves clarity of the rendering.
The Brightness and Contrast Parameters rollout contains the following parameters.
Increases or decreases all color components (red, green, and blue). Range=0 to 1.0.
Compresses or expands the latitude between maximum black and maximum white. Range=0 to 1.0.
Applies the effect to everything in your 3ds Max scene except the background.