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Color Range Key (PB only)
This key creates transparency by keying out a specified range of colors in either the Lab,
YUV, or RGB color space. You can use this key on screens that consist of more than one
color or on bluescreen or greenscreens that have been unevenly lit and contain different
shades of the same color.
A
B
C
A. Matte thumbnail B. Fuzziness control C. Color Space controls D. Key Color eyedropper E. Plus
(+) eyedropper F. Minus (-) eyedropper G. Color Space
To apply the Color Range Key:
1 Select the layer you want to make transparent, and then choose Effect > Keying > Color
Range.
2 Choose the Lab, YUV, or RGB color space from the Color Space menu. If you're having
trouble isolating the subject using one color space, try using a different one.
3 Select the Key Color eyedropper, and then click in the matte thumbnail to select the
area that corresponds to a color in the Composition window you want to make trans-
parent. Typically, this first color is the one that covers the largest area of the image.
4 Select the Plus eyedropper, and then click other areas in the matte thumbnail to add
other colors or shades to the range of colors keyed out for transparency.
5 Select the Minus eyedropper, and then click areas in the matte thumbnail to subtract
other colors or shades from the range of colors keyed out.
6 Drag the Fuzziness slider to soften the edges between transparent and opaque regions.
7 Use the slider bars in the Color Space Controls section to fine-tune the color range you
selected with the Plus and Minus eyedroppers. The L, Y, R slider bars control the first
component of the specified color space; the a, U, G slider bars control the second
component; and the b, V, B slider bars control the third component. Drag Min slider bars to
fine-tune the beginning of the color range. Drag Max slider bars to fine-tune the end of
the color range.
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