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593Final Cut Pro User Guide
• Refine any difficult areas, such as hair and reflections: Click the Edges thumbnail
image in the Video inspector, draw a line across the difficult area in the viewer (with
one end in the area to keep and the other in the area to remove), and drag the line’s
handle to adjust the edge softness.
You can use the following keyboard shortcuts to work directly in the viewer:
• Make a Sample Color adjustment: Draw a rectangle while holding down the
Shift key.
• Make an Edges adjustment: Draw a line while holding down the Command key.
• Delete a Sample Color or Edges adjustment: Click a Sample Color rectangle or
Edges line while holding down the Option key, or select the control and press the
Delete key.
• Choose a different color if the Keyer effect chose the wrong color: Set the Strength
parameter to 0% (to override the automatic initial color sampling). Then use Sample
Color to choose the color to remove. Select Composite (the left button) in the View
area to see the foreground clip combined with the background clip.
• Adjust how strongly the Keyer matches a color in the foreground image to the default
chroma key color: Use the Strength slider to adjust the tolerance (core transparency)
of the Keyer effect’s automatic sampling. The default value is 100%. Reducing this
value narrows the range of color sampled, resulting in less transparency in the keyed
image. Increasing the Strength value expands the range of color sampled, resulting
in more transparency in the keyed image. The Strength parameter is useful for
retrieving areas of semitransparent detail such as hair, smoke, or reflections.