Gamma/Pedestal/Gain

Use Gamma/Pedestal/Gain to lighten or darken an image.

Gamma

Affects the slope in the color curve to lighten or darken the image overall, with minimal effect on the bright and dark areas already present in the image.

Pedestal

Affects the low-end cutoff value of the curve. Increasing the Pedestal value pushes pixels towards the lighter end of the curve. The Pedestal value is added to the color value of each pixel.

Gain

Affects the high-end cutoff value of the curve. Increasing the Gain value lightens the image uniformly.