Grass Valley 1200 Operation Manual - Manual (Page 96)

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Section 3 — Controls & Menus
Chroma Key Shadow Proc Menu
From the Chroma Key top menu, press [SHADOW PROC>] to
display the Chroma Key Shadow Proc menu shown in
Figure 3-21. This menu allows you to adjust chroma key shadows.
Shadow Proc Menu Functions:
[SHADOW PROC] —Turns shadow processing ON or OFF. When
shadow processing is on, the following shadow adjustments are
available:
(SHADOW CLIP) —Sets the threshold level above which the
shadow image becomes visible.
(SHADOW GAIN) —Sets shadow density.
(SHADOW OPACITY) —Interacts with the Shadow Gain control to
remove noise from the shadow and adjust shadow density.