Grass Valley DD10 part 1 - Manual (Page 58)

2.8 Operation of the keyer menus Diamond digital DD10
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2.8.7 CHROMA KEY ADJUST MENU
HUE,
CHROMA and LUM
Display and adjustment of the key color parameters.
SEL-C,
LEFT, RGHT and Y
Display and adjustment of the selectivity parameters.
After selecting SEL MSK, LEFT, RIGHT and Y are divided into two parameter sets
which now can be separately adjusted:
LEFT-O,
RGHT-O and Y-O
corresponds to the outer mask area and remains controllable also in the Chroma
Keyers panel.
LEFT-I,
RGHT-I and Y-I
corresponds to the inner mask area.