This is RenderMan 21 Documentation you are viewing. The Rmanwiki home page will redirect you to the current documentation.

Page tree


Adjust the exposure of the input color by the given stops. Each positive stop will double the input's intensity. Each negative stop will halve the input's intensity. Often it is preferable to use Exposure instead of a straight multiplication (also called gain), as it is perceptually linear.

Input Parameters

Input Color

The color to have exposure adjustment. Plug a color pattern here.


The number of stops to adjust the inputRGB. The result is multiplied by 2 to the power of stops.

Output Parameters


The clamped color result.


The R channel from the resultRGB output.


The G channel from the resultRGB output.


The B channel from the resultRGB output.