This post effect lets you make common color corrections right away without having to switch to a different application.
This effect is available in the Detailed view of PhotoRendering Settings for the CineRender engine.
Defines the amount of hue in a given color or in the colors of an image, i.e. how brilliant a color/colors will appear.
Higher Contrast values will darken dark regions and brighten bright regions of an image. This amplifies the differences between regions with different brightness values.
Lower Contrast values will lighten dark regions and darken lighter regions of an image, which will result in an optical “flattening” of the image.
The Gamma value adjusts the brightness values (e.g. a bright pixel can be made much brighter, or darkened).
Inverts the image’s color values. Black regions are made white and vice versa. RGB images are inverted by subtracting the maximum pixel color value (i.e. from 255 for 8-bit color depth) for each channel (red, green, blue).
These values define the darkest and brightest points, respectively. If one of the values is modified the total value will be scaled accordingly.