Microtek ScanMaker i700 User Manual page 59

Tone Curve tool
Use the Curve Pointer tool to define points in the curve that will be
modified. When you click on any point in the curve, a black handle
appears to mark your position. To remove the handle, drag it off the
graph.
Use the Curve Zoom Frame tool to zoom in and out on a particular
point in the curve. Once the area is zoomed in, you can then use
the Curve Pointer tool to define new points for better precision. This
is particularly useful for working with 12-bit images, where more
detail can be seen in such images. The zoom level can be seen in
the Zoom field. To zoom out, click Option.
Use the Pan tool to scroll through the curve if the curve has been
zoomed in. This curve tool can be used only if the curve has been
zoomed in with the Curve Zoom Frame button (above). Otherwise,
the Curve Panel tool will be dimmed.
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 Curve Zoom Frame
tool to magnify the curve will zoom in or enlarge your view of the
curve, resulting in a higher zoom percentage.
Method
Method lets you set the kind of curve you wish to have. Select from Line,
Curve, or Gamma.
Channel
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