Apple Shake 4 Tutorials - Manual (Page 219)

Chapter 7 Tracking and Stabilization 219
Note: You do not need a MDiv/MMult set because you are working on the full frame.
For the color correction, first adjust the whites and blacks with the Compress node.
Because the sign has pure whites and blacks, and the bus has good representations of
what should be white and black, Compress works well.
4 In the Compress1 parameters, click the Low Color control.
5 Scrub color in the Viewer that represents the blackest part of the bus, for example,
under the wheel well of the bus.
The blacks are raised to around 18 percent.
6 Click the High Color Picker box, and select a bright color from the side of the bus.
As the bus changes its lighting levels as it turns, animate the High Color parameter.
To animate the Compress parameters:
1 Go to frame 1.
2 In the Compress1 parameters, click the Autokey button in the High Color parameters.
3 Go to frame 39.
4 Scrub the same white area. Since Autokey is already activated, a keyframe is created.