2017

To delete a colour correction at the current frame:
1 Select a matte or the entire image from the Work On box (Master, Sel 1, Sel 2, or Sel 3).
2 Select C from the C/R box next to the Work On box.
The colour correction is cleared at the current frame and a keyframe is set. If you selected a matte (Sel
1, Sel 2, or Sel 3) from the Work On box, the matte is unaffected and its keyframes are not cleared.
Correcting Colour Imbalances
During production, differences in lighting and equipment often create colour imbalances in and between
clips. When you work on these clips in the Colour Warper, you should perform a basic colour correction to
colour balance them. You can balance colours using the tools in the Basics menu. Perform your tasks in the
following order:
■ Set black and white levels.
■ Remove unwanted colour.
Setting Black and White Levels
When you balance the colours in a clip, you should always start with the darkest and lightest parts of the
image. You may, for example, need to establish parameters for the black and white (luma) content to ensure
that the intensity of the image is in accordance with established broadcast parameters. These parameters
are known as black points and white points. You use the Black and White fields to establish black and white
points.
(a) Black field (b) White field
Black field Modifies the luma in the image's shadows without affecting the chroma.
White field Modifies the luma in the image's highlights without affecting the chroma.
To set black and white levels:
1 Sample the highlights in the image. To determine the white point, select a white that appears to be
flat rather than reflective so that you obtain a more accurate reading. Do not use a highly reflective
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