Apple Shake 4 - Manual (Page 641)

Chapter 23 Color Correction 641
Parameters
This node displays the following controls in the Parameters tab:
Value
The contrast value. A higher value means it pushes the RGB values toward 0 and 1. A
low value is low contrast. A value of 0 represents no change.
Center
The center of the contrast curve. A lower value makes that channel brighter. A higher
value makes the image darker. Generally, these values are between 0 and 1.
SoftClip
The roll-off value to give a smooth interpolation. A value of 0 equals no roll-off.
Expand
The Expand node squeezes the data between two points on the X axis of a graph of an
image, increasing the amount of pure black and white (on a per-channel basis) in the
image. Compress squeezes them on the Y axis of the image graph.
Parameters
This node displays the following controls in the Parameters tab:
Low Color
Pixels less than or equal to Lo value go to 0. At 8 or 16 bits per channel, pixels less than
this value are clamped at 0.