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5.
The
Left, Right, Top & Bottom Function dials
allow the user to set the
Left, Right, Top & Bottom
edges of
the keyer mask.
Note
: These mask edges are fully transparent during the keying process. This is helpful if the blue or green
backdrop does not occupy the whole foreground shot. It is also helpful if only a small area of the foreground image
is being Luma keyed. Each value is based on a percentage of the screen width or height, thus 0% indicates no mask
edge and 50% means masking half of the screen area.
