Apple Motion 4 - Manual (Page 1186)

• Feather: A slider that allows you to adjust edge translucence. Lower values reduce
the amount of translucence in a matte, but this results in harder edges around holes
and edges in the alpha channel.
• Mix: A slider that sets what percentage of the original image is blended with the
filtered image. Values range from 0 to 100%.
Keyed original object (color channel) Keyed object with holes (alpha channel)
Keyed object with Matte Choker (color channel) The Matte Choker eliminates the holes
(alpha channel).
1186 Chapter 17 Using Shapes, Masks, and Paint Strokes