The color corrector filter, General controls, Color balance controls – Apple Final Cut Express HD User Manual
Page 837: P. 837)

Chapter 56
Color Correcting Clips
837
IX
The Color Corrector Filter
The Color Corrector filter employs a graphical interface designed specifically for the
task of color correction. The controls will be recognized immediately by professional
colorists who have experience with online color correction equipment.
General Controls
There are several basic controls in the top-left corner of both filters.
 Numeric button (appears when viewing the visual controls): Click this button to view
the numeric controls for that filter in the Filters tab.
 Visual button (appears when viewing the numeric controls): Click this button to view
the visual controls for that filter in the color correction tab.
 Enable Filter checkbox: Select this checkbox to enable or disable the entire filter. This
can be useful if you want to compare your clip before and after the color correction
filter has been applied. When working in the visual controls, you can turn the control
on and off by pressing Control-1.
Color Balance Controls
Color Balance controls are color wheels that allow you to change the mix of red, green,
and blue that fall within the area of a specific range of luminance in your clip. The Color
Balance controls act like virtual trackballs; you can drag anywhere within a control to
move the color balance indicator. The Color Corrector filter has one Color Balance
control that affects the whites of a clip, and a Hue control.
Keyframe controls
Enable Filter checkbox
Numeric button