Apple Final Cut Pro 7 - Manual (Page 1234)

• Color Range control: Allows you to fine-tune the range of color that you want to key
on.
Bottom handles
Color gradient
Top handles
• Top handles: Let you select a larger or smaller range of colors that are keyed, based on
the original colors you selected with the Select Color eyedropper tool. These handles
correspond to the Width control in the Key on Chroma area of the filter’s numeric
controls.
• Color gradient: Drag left or right within the color gradient to shift the overall hue of
the color range you’ve set with the top set of handles. This corresponds to the Center
On control in the Key on Chroma area of the filter’s numeric controls.
• Bottom handles: Allow you to define the tolerance of your key. These handles correspond
to the Softness control in the Key on Chroma area of the filter’s numeric controls. Use
these handles to gently eliminate additional fringing from your key while attempting
to preserve fine detail around the edges of your foreground subject.
• Saturation control: Allows you to adjust the degree and range of saturation that
contributes to defining your key. The top and bottom handles work the same as those
in the Color Range control. Drag left or right within the gradient to move all four handles
simultaneously.
• Luma control: Lets you adjust the degree and range of luma that contributes to defining
your key. The top and bottom handles work the same as those in the Color Range
control. Drag left or right within the gradient to move all four handles simultaneously.
View Final/Matte/Source button
Select Color eyedropper
Invert Selection button
• Select Color eyedropper: When you click this button, the pointer turns into an eyedropper
you can use to select a color from a clip in the Video tab of the Viewer or in the Canvas.
1234 Chapter 72 Keying, Mattes, and Masks