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Table Of Contents
In either mode, expanding the Chroma graph or Luma handle outward increases the
regions of transparency in the keyed image. Dragging the side of a Chroma graph or a
Luma handle inward diminishes the transparent regions in the keyed image. In the
example below, the top image shows the holes in the matte that result from increasing
edge softness using the outer graph of the Chroma control. The bottom image shows
how reducing edge softness closes these holes.
Widening softness
Narrowing softness
5 If you haven’t adjusted the Luma control, drag the left or right lower handles to alter the
softness of the luma component of the image.
Tip: In Manual mode, you can adjust the lower handles by dragging the bar connecting
the top and bottom handles. To adjust all handles simultaneously, drag inside the curve
in the graph.
6 Adjust the Chroma and Luma Rolloff sliders to subtly alter the falloff between the tolerance
and softness of the key.
656 Chapter 13 Keying