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Subject in front of the Backdrop
Subject and Backdrop after Green
Keying Level Adjustment
Now press the Density (Level) button.
The Chroma Key and Density buttons should both be illuminated red.
Again use the Adjustment Knob to eliminate as much backdrop as possible.
Before Density Adjustment-
Creases and areas of shadow can
be seen in the background video.
After Density Adjustment-
The background video now has a
more even and solid appearance.
Edge Adjustment (Shrink)
Once Density has been adjusted we should be getting a pretty good Chroma Key Effect. It is often worth
going back to the Green Keying Level Adjustment to fine tune after the density has been adjusted. If your
backdrop and subject are well lit you may not need to fine tune the result. However, there will be occasions
when the subject still has a dark edge even when you have set the Green Keying and Density Levels
correctly. This is why the DVK-200 has Left and Right Edge Shrink Functions. If we look closely at the
subject in our example we can see there is an edge running along the left of the image (this is due to the
uneven lighting set up that we have used).