User`s guide

5-47Reference
1 Curve: The Curve is a graphic representation
of the tone curve showing scanner input
from dark on the left to light on the right.
2 Method: The Method sets the kind of curve
you wish to have. Select from Line, Curve,
or Gamma.
3 Channel: The Channel allows you to choose
the color or gray channel in which the
gamma will be affected.
How to Use the Tone Curve
4 Input, Output, Zoom:
• Input shows the horizontal value of
wherever the cursor is inside the curve,
reflecting the scanner's full depth. The
example above shows the cursor pointing
to the middle of the curve and having a
value of 1696 on the 0-to-4095 pixel scale,
for a 36-bit scanner like the ScanMaker 5.
For 24-bit scanners, the pixel range is
from 0 to 255.
• Output shows the vertical value of
wherever the cursor is inside the curve,
reflecting the scanner's full depth. The
example above shows the cursor pointing
to the exact middle of the curve, with a
value of 1973.
• Zoom indicates the magnification level of
the curve box. At 100% zoom, the curve is
seen in its entirety. Using the zoom frame
tool (discussed below) to magnifiy the
curve will zoom in or enlarge your view of
the curve, resulting in a higher zoom
percentage.
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GammaCurveLine