Adobe AFTER EFFECTS CS3 PROFESSIONAL User Manual page 396

AFTER EFFECTS CS3 390
User Guide
Change To Color offers flexibility and options unavailable in the Change Color effect. These options include
tolerance sliders for hue, lightness, and saturation for exact color matching, and the ability to select the exact RGB
values of the target color that you wish to change to.
This effect works with 8-bpc and 16-bpc color.
Original image (top left), with saturation removed in the planet (bottom left), and with light green changed to yellow in the planet (bottom
right)
The center of the color range to change.
From
The color to change matched pixels to.
To
To animate a color change, set keyframes or expressions for the To color.
Which channels are affected.
Change
How to change colors. Setting To Color performs a direct change of affected pixels to the target color.
Change By
Transforming To Color transforms affected pixel values toward the target color, using HLS interpolation; the amount
of change for each pixel depends on how close the pixel's color is to the From color.
How much colors can differ from the From color and still be matched. Expand this control to reveal
Tolerance
separate sliders for Hue, Lightness, and Saturation values.
Note: Use the View Correction Matte option to better identify which pixels are matched and affected.
The amount of feather to use for the edges of the correction matte. Higher values create smoother transi-
Softness
tions between areas affected by the color change and those unaffected.
Shows a grayscale matte that indicates the amount to which the effect affects each pixel.
View Correction Matte
White areas are changed the most, and dark areas are changed the least.
Channel Mixer effect
The Channel Mixer effect modifies a color channel using a mix of the current color channels. Use this effect to make
creative color adjustments not easily done with the other color adjustment tools: Create high-quality grayscale
images by choosing the percentage contribution from each color channel, create high-quality sepia-tone or other
tinted images, and swap or duplicate channels.
[output channel]-[input channel]
The percentage of the input channel value to add to the output channel value. For
example, a Red-Green setting of 10 increases the value of the red channel for each pixel by 10% of the value of the