Microtek ScanMaker 6100 Pro User Manual page 85

Contrast in an image can be seen by the angle of
the line. The steeper the slope, the higher the
contrast. The closer the line is to horizontal, the
lower the contrast.
Curve
The Curve is a graphic representation of the tone curve showing scanner
input from dark on the left to light on the right.
Method
The Method sets the kind of curve you wish to have. Select from Line,
Curve, or Gamma.
Input, Output, Zoom:
Input shows the horizontal value of wherever the cursor is inside the
curve, reflecting the scanner's full depth.
Output shows the vertical value of wherever the cursor is inside the
curve, reflecting the scanner's full depth.
Zoom indicates the magnification level of the curve box. At 100%
zoom, the curve is seen in its entirety. Using the zoom frame tool to
magnify the curve will zoom in or enlarge your view of the curve,
resulting in a higher zoom percentage.
Channel