Apple Shake 4 - Manual (Page 639)

Chapter 23 Color Correction 639
Clamp
The Clamp node clamps off values above and below a certain range. For example, if
your redHi value is .7, any value above that is set to .7. You can isolate the red, green,
blue, and alpha values.
Parameters
This node displays the following controls in the Parameters tab:
Low Color
The low value that all values are set to if they are less than this number. 0 is no change.
aLo
A low value control for the alpha channel.
High Color
The high value that all values are set to if they are more than this number. A value of 1
equals no change.
aHi
A high value control for the alpha channel.
Compress
The Compress node squeezes the image to fit within the Lo and Hi range you set.
Unlike Clamp, the entire image is modified because it is fit between the two points.
Parameters
This node displays the following controls in the Parameters tab:
Low Color
The new lowest value in the image. A value of 0 equals no change.
aLo
A low value control for the alpha channel.