Channel mixer effect, Color balance effect, Color balance (hls) effect – Adobe After Effects CS4 User Manual
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USING AFTER EFFECTS CS4
Effects and animation presets
Last updated 12/21/2009
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Color correction and adjustment
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 green
channel for that pixel. A Blue-Green setting of 100 and a Blue-Blue setting of 0 replaces the blue channel values with
the green channel values.
[output channel]-Const
The constant value (as a percentage) to add to the output channel value. For example, a Red-
Const setting of 100 saturates the red channel for every pixel by adding 100% red.
Monochrome
Uses the value of the red output channel for the red, green, and blue output channels, creating a
grayscale image.
This effect works with 8-bpc and 16-bpc color.
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Color correction and adjustment
Color Balance effect
The Color Balance effect changes the amount of red, green, and blue in the shadows, midtones, and highlights of an
image.
Preserve Luminosity preserves the average brightness of the image while changing the color. This control maintains
the tonal balance in the image.
This effect works with 8-bpc and 16-bpc color.
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Color correction and adjustment
Color Balance (HLS) effect
The Color Balance (HLS) effect alters the hue, lightness, and saturation of an image. This effect is intended only to
provide compatibility with projects created in earlier versions of After Effects that use the Color Balance (HLS) effect.
For new projects, use the Hue/Saturation effect, which operates the same as the Hue/Saturation command in Adobe
Photoshop. You can convert a movie to grayscale by setting the Saturation to –100.
This effect works with 8-bpc and 16-bpc color.
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