User guide

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Chapter 6, Setting Up Realtime Effects with Adobe Premiere
$ The Color Gain controls for Red, Green, and Blue let you increase or
decrease the intensity of a particular color present in your image. For
example, increasing the
Red value increases only the red color component
of your image, without affecting the other colors.
$ Color Addition lets you adjust all colors in your image by a given amount
of
Red, Green, or Blue. For example, increasing the Red value increases
the amount of red throughout your entire image.
•
Color Gain and Color Addition (Alpha) The Alpha controls under
Color Gain and Color Addition let you adjust the transparency levels of
your image’s alpha channel. You can use these controls for any clip in which
there is alpha-key information (such as .tga and .icg clips on Video 2 or
higher). You can also use the
Alpha controls to adjust the transparency of
.avi clips (these clips are assumed to have a 100% opaque alpha component).
$ Use the Alpha control under Color Gain to adjust the opaque and
semi-transparent areas of the alpha-key information in your image. When
you increase the
Alpha Gain, fewer and fewer alpha values are included in
the key (that is, fewer alpha values become partially transparent, giving you
a sharper-edged key). When you decrease the
Alpha Gain, the opaque and
semi-transparent areas become more transparent, giving you a softer key.
$ Use the Alpha control under Color Addition to adjust all of the alpha-key
values of your image (from 100% transparent to 100% opaque). For
example, drag the
Alpha Addition slider to the right to make all the alpha
values more opaque, or drag the slider to the left to make all the alpha values
more transparent.
¥Tip Adjustments always apply to Color Gain first, so any changes you make to
the
Color Addition controls take into account the amount of gain specified. If
you adjust the
Color Gain controls after making changes to the Color Addition
controls, you won’t see the effect of your changes in the
Preview Window.