3.
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3 Scanning
The Midtone is a relative measure of the gamma of your monitor. The scale
for Midtone ranges from 0 to 255. The gamma curve is a geometric series.
This means that at a value of 255 it tends to infinity.
The Midtone is bound by the Shadow and Highlight terms and cannot
exceed them at any time. So, if the Highlight is set to 255 and the Shadow is
set to 0, a gamma of 1 is equal to a Midtone of 128. Similarly, if the Shadow
is set at 200 (lower boundary) and the Highlight is set at 220 (upper
boundary), a gamma of 1 is equal to a Midtone of 210.
Operation:
1. Select the
Advanced...
button on the
Balance
tab. This will display the
Level adjustment window.
2. On the histogram, use the mouse key to click on the black, gray ,or white
triangles to make changes to the Shadow, Midtone and Highlight
respectively.
3. To see the changes and compare them to the original previewed image,
click on Sample 1 to see the enhanced image.
4. To make a second enhancement for comparison, click on Sample 2. Make
new enhancements to the original. Compare the images of Sample 1 and
2.
5. After completing enhancement settings, click on the desired sample to
choose the image
6. Click
OK
to save the changes and close the
Enhancement
dialog box. If
you do not want to save the changes, click on the
Cancel
button to close
the Enhancement dialog box. Click
Auto
button to allow the software to
make appropriate highlight and shadow adjustments.
Scanning
