2011

of a group in the preferences can be assigned to a corresponding channel
group.
Each Channel can be assigned a field from the list, or as groups when using
the buttons next to the menu.
The Channel Groups list shows only if the existing group was found in the
file. The groups are determined by your project preference—see
Setting Project
Preferences
on page 97.
The Channel Group options include:
DescriptionChannel Group
See Channel Assignments on page 128.None
Alpha channel onlyAlpha
Red, Blue, and Green channels onlyColors
Red, Blue, Green and Alpha channelsColors+Alpha
Z-axis onlyDepth
X, Y, and Z-axisSurface Normals
X and Y-axisVelocity
From File to Output Maps a channel present in the file to a channel (output)
in the resulting node or composition.
You can assign a channel from the file to an output channel by clicking the
Output Channel menu and selecting the channel wanted. As shown, the
channels NX, NY and NZ have been grouped under the name Surface Normals,
and were assigned to R, G and B.
Output Specifies the channels that will be present in the resulting node or
composition. A reasonable default is set according to the channels present in
the file. It is possible to change the output to any output of RGB, RGBA, or A.
130 | Chapter 8 Importing Media