Chapter IV
25
picture. Hint: We suggest leaving the histogram set to AUTO
when not encountering color depth discrepancies.
Figure 6. Histogram
Tone Map
enables you to modify the tonal range and to adjust
highlight, midtone, and shadow areas of an image. For example:
When an image is too dark or too light, it may have hidden details
that can be uncovered by using Tone Map. This usually improves
the contrast of an image. For example, when the darkest tone is
65% black, you can use the Tone Map to make it 100% black.
Gamma
values follow a smooth curve, as seen below in
Figure 7. By adjusting the gamma, you can change the tonal range
of the selected
Channel
(color). Gamma values are primarily a
measure of a channel
brightness. The larger the gamma
value, the brighter the color becomes. Note: By changing the
gamma values you affect the image
data, and influence the
how an image displays on your computer
monitor, and
printer.
Summary of Contents for OpticPro
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Page 11: ...Chapter I Chapter I Hardware Installation ...
Page 15: ...Chapter I 5 10 Install the scanner software see Chapter II Software Setup page 7 ...
Page 16: ......
Page 17: ...Chapter II Chapter II Software Setup ...
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Page 21: ...Chapter III Chapter III Usage and Maintenance ...
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Page 27: ...Chapter IV Chapter IV Using TWAIN ...
Page 39: ...Appendix Appendix A Troubleshooting ...
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Page 43: ...Appendix B Appendix B Customer Service and Warranty ...
Page 45: ...Appendix C Appendix C Index ...
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