Apple Color 1.5 - Manual (Page 266)

• Tolerance: An outer pair of handles defines a range of values that surround the range
values to create falloff, giving a soft edge to the keyed matte. These are the lighter gray
pixels seen in the matte.
Adjusting the HSL Controls
This section explains how to adjust the HSL controls.
To adjust the center point for any qualifier
µ
Drag anywhere within the center of the two Range handles.
To make a symmetric adjustment to the Range handles
µ
Drag the Range handles directly, or drag anywhere between the Range and Tolerance
handles (if the tolerance is wide enough) to widen or narrow the range.
To make an asymmetric adjustment to the Range handles
µ
Hold down the Shift key and drag the handle you want to adjust; the opposing handle
remains fixed in place.
When you make an asymmetric adjustment, the center point also readjusts to match the
new range.
Note: You cannot make asymmetric adjustments using knobs on a control surface.
266 Chapter 10 The Secondaries Room