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Figure 10.6 The Color Difference
Key results. Notice how the
subject is also partially erased,
showing the magenta solid
beneath it.
In my key, I have too much of the background leftover, and I'm
still partially invisible. So, to further remove the background, I'm
going to increase the Partial B In Black value. This is like drag-
ging the far left arrow under the histogram in the Levels effect
to the right. I then want to restore some of the pixels making up
the subject. I can do this by reducing the Partial B In White value.
This is the equivalent of dragging the far right arrow under the
histogram in the Levels effect to the left.
To double check your fi nal matte, it's always a good idea (in all
keying effects and applications) to view the matte in gray scale.
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