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The Chroma Editor
The chroma editor is a useful tool for adjusting color satura-
tion. Steepening the curve increases saturation in the affected
range, making colors more vivid. Flattening the curve results in
flatter, less vivid colors. Moving the gray point to the left makes
the image as a whole more vivid, while moving it to the right
"averages out" the differences between colors in the image, mak-
ing the image grayer overall. In general, the most effective use
can be made of the scanner's dynamic range by steepening the
curve in the portions of the histogram that contain the greatest
number of pixels while leaving colors corresponding to a neu-
tral gray unaffected.
Pg. For more information on:
63 Using the curves editor
Reference: The Tool Chest
The chroma editor is shown below.
Output level
sliders
Black point
slider
Input/output
levels
Item
Shows the distribution of pixels of different
chromas in the input image. The horizontal
Histogram
axis shows chroma, the vertical axis the num-
ber of pixels.
Output level
Sets the maximum and minimum values for
sliders
output.
Histogram
Description
White point
slider
Gray point
slider
81
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