User Manual

Table Of Contents
The Many Uses of Key Output Gain
Several of the techniques discussed in here and in “Secondary Qualifiers,” can be further
customized using the Key Output Gain parameter, which makes it easy to control the strength of
a node’s effect on your grade with a single adjustment. In the following example, two simple
Serial nodes are applied to a clip, with the first one expanding image contrast, and the second
one using a variety of controls to add some extreme warmth to the highlights.
A tint applied only to the highlights of the image
If you decided that you want to reduce the amount of warmth added by the second node
without readjusting the controls you used to create the effect, you could open the Key palette
and lower the Key Output Gain parameter to fade the effect with a single adjustment.
Four versions of this grade shown using the Versions option of the Split Screen controls, with Output
Gain set to 1, .75, .5, and.25 for comparison
This principle also works for controlling the strength of individual nodes that are being
combined in parallel, that are combined using the Layer node, or for simply fading out the effect
of any node in the node tree you want to “turn down” a bit.
Chapter – 126 Combining Keys and Using Mattes 2876