User Manual

Table Of Contents
Range
The Range slider controls the range of colors around the source color that are included in the
mask. If the value is left at 0.0, only pixels of the same color as the source are considered part
of the mask. The higher the value, the more that similar colors in the source are considered to
be wholly part of the mask.
Range Soft Edge
The Range Soft Edge determines the falloff range of the colors selected. Any pixel within the
range defined above are treated as 100% within the mask. If the soft range is set to 0.0, no
other pixels are considered for the mask. Increasing the soft range increases the number of
colors close to, but not quite within, the range included in the mask. These pixels are
semitransparent in the mask.
The Common Controls
Nodes that create masks share several identical controls in the Inspector. This section
describes controls that are common among mask nodes.
Inspector
Mask node Image tab
Image Tab
The controls in this tab set the resolution and clipping method used by the generated mask.
Output Size
The Output size menu sets the resolution of the mask node’s output. The three options include
the default resolution of the comp, the source input’s resolution on nodes that have an input, or
a custom resolution.
Custom
When selecting Custom from the Output Size menu, the width, height, and pixel aspect of the
mask created are locked to values defined in the composition’s Frame Format preferences. If
the Frame Format preferences change, the resolution of the mask produced is changed to
match. Disabling this option can be useful for building a composition at a different resolution
than the eventual target resolution for the final render.
Width and Height: This pair of controls is used to set the Width and Height dimensions
of the mask to be created.
Pixel Aspect: This control is used to specify the Pixel Aspect ratio of the created mask.
An aspect ratio of 1:1 would generate a square pixel with the same dimensions on either
side (like a computer monitor), and an aspect of 0.91 would create a slightly rectangular
pixel (like an NTSC monitor).
Chapter – 97 Mask Nodes 2134