2011

Suppressing a Sampled Color
Unwanted color can be caused by factors such as inconsistent lighting
conditions during a shoot. This can result in images that contain unnatural
looking colors or one predominant color, which gives the image an unwanted
color cast. You can suppress the unwanted color using the Suppression feature
in the Color Curves.
Use the Suppress toggle button to activate the color suppression curve. Use
the Color Suppression color pot next to the Suppress button to set a color
suppression target using the color picker.
With the color suppression target set, modify the shape of the color suppression
curve along the hue range that you want to suppress.
Modifying the R, G, B, Saturation, and Luma
To increase the probability of pulling a good key, you can modify the levels
of the RGB channels, saturation and luma.
Toggle the Red, Green, Blue, Saturation, and Luma buttons to activate their
corresponding curves. Manipulate the shape of each curve over the source
hue range that you want to affect. The value of the parameter that corresponds
with the curve changes relative to the height of the point along the curve in
the curve editing area.
Each curve is a hue gradient and as the shape of the curve changes, the colors
along the curve's gradient change to reflect the result. For example:
■ Raising the luma curve over the green hue range, the green curve along
that range becomes brighter—the luma value increases (RGB values increase
together).
■ Lowering the blue curve over the magenta hue range, the blue curve over
that range becomes red—the blue (B channel only) value decreases.
Modifying Luma
While working on luma, you can modify the R, G, B, saturation, and luma
along the luma range.
You can toggle the Red, Green, Blue, Saturation, and Luma buttons to activate
their corresponding curves. Manipulate the shape of each curve over the luma
range that you want to affect. The value of the parameter that corresponds
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