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Chroma Keyer Subpanel
6. Select the background hue to be suppressed. Select BKGD
SUPR
on the Chroma Keyer panel, then set the CHROMA and
LUM
knobs fully counterclockwise. Turn the HUE knob for
maximum effect on the desired suppression hue.
7. Adjust the SELECTIVITY knob for the desired amount of
selectivity (range of hues admitted by the hue selector).
Counterclockwise widens the selectivity; clockwise narrows
the selectivity.
8. Adjust the CHROMA knob until all chroma has been
subtracted out of the background. Clockwise allows greater
suppression.
9. SELECTIVITY and CHROMA may be readjusted to optimize
suppression of the background chroma.
10. Adjust the LUM knob until the background is subtracted down
to black.
11. In the Chroma Key menu, set BACKGROUND VIDEO to ON. To
aid in the adjustment of background video, you may also wish
to set FOREGROUND VIDEO to OFF.
12. Select a background on the M/E to present the desired
background. Adjust the CLIP and GAIN controls on the Keyer
subpanel to achieve the desired effect. Use the lowest gain
that still allows a fully opaque key. Small adjustments of the
HUE
and LUM knobs may be made as desired.
13. If you turned off FOREGROUND VIDEO in step 11, turn it back
on at this time.
14. You may verify the desired appearance of the chroma key by
selecting SHOW KEY on the Keyer subpanel and observing the
key on the Preview monitor. Readjustment of the CLIP and
GAIN
controls on the Keyer subpanel may be made, if desired.