User Manual

Range Controls
The range controls define how much color is considered to fall into the shadows, midtones, and
highlights areas of the image. The spline controls allow for easy adjusting of the tonal ranges of
each Shadow and Highlight tonal map.
Simple/Smooth
The Simple button sets the range to be linear. The Smooth button sets a smooth tonal gradient
for the ranges.
Lock Alpha/Spill Removal Tuning
When this checkbox is disabled, separate tuning controls are used when generating the Alpha
and when determining how much of the background color to subtract from the image.
 Shadows: Adjusts the strength of the key in darker areas of the background.
 Midtones: Adjusts the strength of the key in midtone areas of the background.
 Highlights: Adjusts the strength of the key in brighter areas of the background.
Mask Tab
The Mask tab determines how the solid and garbage mattes are applied to the key.
Solid Source Alpha
Used to combine the existing Alpha from the source image with the solid mask.
 Ignore: Does not combine the Alpha from the source image.
 Add: Solid areas of the source image Alpha are made solid in the solid mask.
 Subtract: Transparent areas of the source image Alpha are made transparent in the
solid mask.
Chapter – 98 Matte Nodes 2157