Canon MP490 series On-Screen Manual page 556

> > Scanning with Other Application Software
Advanced Guide Scanning
Appendix: Useful Information on Scanning
Adjusting the cropping frame (scan area)
Adjusting Cropping Frames
Selecting the best resolution
Resolution
Learning about file formats
File Formats
Learning about Color Matching
Color Matching
Matching the colors between the document and monitor
See Monitor Gamma in the following section.
Color Settings Tab
> Appendix: Useful Information on Scanning
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