Canon ImageFormula R10 User Manual page 34

[Brightness] Tab
Adjust the brightness and contrast of scanned images.
In addition, you can also click [Gamma] and set the gamma correction
value for scanned images.

Gamma correction is set when the color tone of the scanned
image is different from that of the image displayed on the
monitor.

For information on your monitor's gamma value, see the
instruction manual that came with the monitor.
[Image processing] Tab
Set the processing method for scanned images.
[Feeding] Tab
Specify scanner operations related to document feeding.
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