2011

Table Of Contents
To adjust the matte's luminance curves:
1 In the Layer Browser, select the composite layer to adjust. You can mute
or solo the layer.
2 Use the Layer Tools to navigate through the 2D Compositor's layers.
3 Select mathematical blending operations from a context menu.
4 Once a layer is selected from the Layer Browser, click a curve to select it.
Adjust the luminance curve by clicking a point to display its tangent
handle and drag the handle to adjust the curve. Using hotkeys, you can
add and delete control points, break or unify tangent handlessee
Animation Editor on page 662.
Alpha Tools
The Alpha tools let you control the look of your alpha:
DescriptionTool
For matte cleanup tasks during the keying processsee Alpha Levels
on page 343.
Alpha Levels
Blends two mattes together under the optional control of a third
mattesee Blend Alpha on page 344.
Blend Alpha
Softens the alpha channel of its primary inputsee Blur Alpha on
page 348.
Blur Alpha
Brings the alpha channel of the primary input within a predeter-
mined rangesee Clamp Alpha on page 349.
Clamp Alpha
Lets you remove gray details from white and/or black regions of the
alpha channelsee Cleanup Alpha on page 349.
Cleanup Alpha
Composites two mattes togethersee Comp Alpha Tool on page
350.
Comp Alpha
Allows edges in the matte to be moved, stretched, and softenedsee
Control Edge on page 352.
Control Edge
Replaces the source alpha channel with an edge map of the source
alphasee Detect Edge on page 354.
Detect Edge
342 | Chapter 16 2D Compositing