Adobe Premiere Elements 8 - Manual (Page 176)

171 USING ADOBE PREMIERE ELEMENTS 8 EDITOR
Applying effects
Last updated 8/12/2010
Channel Mixer
Every clip in Adobe Premiere Elements is composed from three color channels: red, green, and blue. Each channel
contains the luminance values for its respective color. Using the Channel Mixer effect, you can add the values from
any of these channels to any of the other channels, for example, adding the luminance values from the green channel
into the red channel. Use this effect to make creative color adjustments not easily achieved with the other color
adjustment tools. Create high-quality grayscale clips by choosing the percentage of the grayscale contributed by each
color channel, create high-quality sepia-tone or other tinted clips, and swap or duplicate channels. You could use this
effect, for example, to entirely replace a noisy blue channel with values taken from, say, a clean green channel.
Video clip and its red, blue, and green channels
Each of the properties for the Channel Mixer is labeled with a pair of color names. The word to the left of each hyphen
names the property’s output channel; the word to the right names its input channel. For example, the Red-Green
property has the red channel as its output and the green channel as its input. You can use it to add the luminance values
of the green channel to the red channel.
Channel Mixer properties
A. Output channel B. Input channel C. Value
The value to the right of each property name sets the percentage of the output channel contributed by the specified
input channel. This number is a percentage ranging from -200% to 200%.
The Constant (Const) properties for each output channel allow you to specify a base value to add to that output. For
example, a Red-Const value of 50 will add 50% of full luminance (50% of 255, or about 127) to every pixel in the red
output channel.
The Monochrome option creates a grayscale clip from the output channel values. Monochrome is useful for clips that
you plan to convert to grayscale. If you select this option, adjust the channel values, and then deselect this option, you
can modify the blend of each channel separately, creating a hand-tinted appearance.
A B C