You can boost the colors in an image by increasing the gain and offset values. Gain and Offset controls multiply the pixel color values by the gain and then adds the offset value. The resulting color values are clipped at the maximum color value of 255 in 8-bit mode, or 1 in floating point mode.

You can also reduce the colors in the image by decreasing the gain and offset values. The resulting color values are clipped at the minimum value of 0.

Gain is expressed as a percentage value. The default value of 100% has no effect on the image since the color values are multiplied by 1.

To boost or reduce the colors in the image:

1. Select the range that you want to modify.
2. Drag the Gain field for the color channel that you want to modify (you may also type values into the field).
3. Drag the Offset field for the color channel that you want to modify (you may also type values into the field).