User Manual

Node Editor displaying the influence of the external matte
on multiple nodes when the keys are linked
3 If necessary, select Node 1, and use the Key palette controls to modify the incoming
key, inverting or blurring it as necessary to create the isolation you need.
NOTE: Don’t select the EXT MATTE node, because it exposes different
controls in the Key palette for transforming, flipping, looping, and freezing
the matte.
At this point, you can add adjustments to the inside and the outside of this composited
shot to improve the composite.
(Before/After) An external matte is used to apply
separate grades to the foreground and background of
a previously composited clip
Ideally, external mattes are exported so that they match the size and duration of the
RGB clip they’re supposed to accompany. If they don’t match or if you’re using some
other grayscale clip as an external matte to create some sort of effect, then there are
parameters in the Key palette that you can use to retime or transform a matte so it
works better in your grade.
Chapter – 126 Combining Keys and Using Mattes 2861