1.5

• Adjusting Node Parameters
• Bypassing Nodes
• Cutting, Copying, and Pasting Nodes
How Node Trees Work
In the Color image processing pipeline, the Color FX room processes the image as it
appears after whatever corrections have been applied in the Primary In and Secondaries
rooms. Unattached node inputs automatically connect to the state of the image as it’s
affected by the Primary In and Secondaries rooms. This is how each node tree begins,
with an empty input that’s automatically connected to the corrected image.
Note: The sole exception to this is the Color node, which generates a frame of solid color
that you can use with multi-input math nodes to tint an image in different ways.
To perform more operations on an image, you simply add more nodes, connecting the
outputs of previously added nodes to the inputs of new nodes using noodles.
You can think of a node tree as a waterfall of image processing data. Image processing
operations begin at the top and cascade down, from node to node. Each node exerts its
effect on the image that’s output from the node above it, until the bottom is reached, at
which point the image is at its final state.
287Chapter 11 The Color FX Room