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Chapter 10 Finish
RGB Difference Key
Use the RGB Difference Key to specify which color you want to make transparent in the clip.
The difference between a chroma key and an RGB difference key is that a chroma key lets you adjust the
chroma and the gray values independently, while the RGB difference key adjusts these components
together.
RGB Difference Key
Color
Click this field to open the color palette. To specify the color you want to use, click a color in this color
spectrum.
Pick a color
You can also use the Pipette (Eyedropper) to specify the key color. Simply click the Pipette button and
continue to hold down the mouse button, then release the mouse button anywhere in the software inter-
face or desktop. This action selects the color value at precisely the location where the mouse button was
released. The color is automatically displayed in the color field.
Similarity
Use Similarity to specify a range of similar colors to be transparent. To select a range, drag the Similarity
slider between values 0 and 100. The higher the setting, the broader the range of similar colors selected.
Softness
Use Softness to soften the edges of the superimposed (foreground) clip.