User Manual

Shadows/Midtones/Highlights
These buttons are used to select which range is output by the node as a mask. White pixels
represent pixels that are considered to be part of the range, and black pixels are not included in
the range. For example, choosing Shadows would show pixels considered to be shadows as
white, and pixels that are not shadows as black. Mid gray pixels are only partly in the range and
do not receive the full effect of any color adjustments to that range.
Channel
The Channel selection buttons shown in this tab can be used to extract a mask from the range
of a specific color channel. By default, Fusion uses the luminance channel when the color
ranges are examined.
Mini Spline Editor
The extent of the ranges is selected by manipulating the spline handles. There are four spline
points, each with one Bézier handle. The two handles at the top represent the start of the
shadow and highlight ranges; the two handles at the bottom represent the end of the range.
The Bézier handles are used to control the falloff.
The midtones range has no specific control, since its range is understood to be the space
between the shadow and highlight ranges. In other words, after low and high masks have been
applied, midtones are everything else.
The X and Y text controls below the Mini Spline Editor can be used to enter precise positions
for the selected Bézier point or handle.
Presets
This sets the splines to two commonly-used configurations. The Simple button gives a
straightforward linear-weighted selection, while the Smooth button uses a more natural falloff.
Common Controls
Image and Settings Tabs
The Image and Settings tabs in the Inspector are also duplicated in other mask nodes. These
common controls are described in detail at the end of this chapter in “The Common
Controls” section.
Rectangle Mask [REC]
The Rectangle node
Rectangle Mask Node Introduction
The Rectangle mask creates simple square or rectangular masks. By default, it creates a
rectangle in the same aspect ratio as the comp, but independent control is offered over the
width, height, and angle, providing for a wide variety of rectangular shapes.
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