User Manual

The Node Editor’s Pan (Hand) tool
The Components of a Node Tree
Ambitious grades may require trees of multiple nodes to create the necessary effect. This
section covers the mechanics of putting nodes together into the structures that are described
in more detail later in this chapter.
Every node you add is a “Corrector” node, which is capable of either primary or secondary
correction, depending on whether or not you enable the Qualifier/Window/Matte controls.
Even“Serial” and “Parallel” nodes are simply Corrector nodes that are added in series or in
parallel to the previous node in the node tree; the names are a consequence of how
they’re added.
Each Corrector node has two inputs and two outputs, which lets you separately manage the
RGB image-processing channel, and the Key channel that defines areas of isolation for image
processing operations, or transparency for compositing. RGB connections are light green,
located at the top left and right of each node. Key connections are blue, located at the bottom
left and right of each node. Inputs into the node are triangles, and outputs are squares. These
inputs and outputs let you control the flow of image and isolation channels coming into and
going out of each node in the tree.
A single node, the RGB (green)
and key (blue) triangular inputs and
square outputs are clearly visible
Nodes are attached to one another via “connections,” seen as lines that connect one node to
another. Image data flows from left to right, starting with the Source input all the way at the left
of the Node Editor, through each node in the tree, and ending at the Node Tree output at the
right of the NodeEditor.
A simple serial arrangement of corrections
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