Sony DVS-7300 System User Manual page 222

Making manual color cancel adjustment
If the background color is affecting the foreground image, by turning the
color cancel function on you can eliminate this effect.
Use the following procedure.
1
In the ADJUST menu, set F4 (KEY ACTIVE) to "OFF".
The foreground only appears on the monitor.
2
Set F5 (COLOR CANCEL) to "ON".
3
Adjust the parameters.
Knob
1
2
3
4
Set F4 (KEY ACTIVE) to "ON".
The combined chroma key image reappears.
Parameter Setting
Luminance Set luminance (0.00 to 100.00)
Saturation Set saturation (0.00 to 100.00)
Hue Set hue (0.00 to 359.99)
Chapter 5 Chroma Keying
5-9