Sony DVS-7300 System User Manual page 221

Basic Chroma Key Operations
3
4
Using manual adjustment
Activating the "key active" function displays the combined chroma key
image on the monitor. You can then make manual adjustments to the chroma
key parameters, using the following procedure.
1
2
5-8
Chapter 5 Chroma Keying
Adjust the parameter settings so that the sample frame is entirely within
the area being used for chroma keying (usually the blue background).
Knob Parameter
1 H Pos
2 V Pos
3 Size
Press F2 (AUTO START).
This starts the auto chroma key function and F4 (KEY ACTIVE) turns
on; the combined picture then appears on the monitor.
In the ADJUST menu, set F4 (KEY ACTIVE) to "ON".
Adjust the parameters as follows.
Knob Parameter
1 Clip
2 Gain
3 Hue
4 Filter
Setting
Set the horizontal position of the frame (–50.00 to
+50.00)
Set the vertical position of the frame (–50.00 to
+50.00)
Set size (0.00 to 100.00)
Setting
Set clip level on the key signal (0.00 to 100.00)
Set key sharpness (0.00 to 100.00)
Set key hue (0.00 to 359.99)
Select filter coefficient (1 to 9)