Canon MG8100 series On-Screen Manual page 778

If an area is not specified, the document will be scanned at the document size (Auto Crop) or film
size. If an area is specified, only the portion in the cropping frame will be scanned.
Adjusting Cropping Frames
Image corrections
Allows you to apply corrections to images.
Important
Available functions vary by the document type selected in Select Source.
Auto Document Fix, Fading correction and Backlight correction are available when
Recommended is selected on the Color Settings tab of the Preferences dialog box.
Note
To change exposure, select the "
adjust the value and scan.
Reduce Dust and Scratches
Reduces dust and scratches when scanning film.
Auto Document Fix
Sharpens text in a document or magazine for better readability.
Important
When this checkbox is selected in ScanGear (scanner driver) started from MP Navigator
EX, the files can be saved in JPEG/Exif or PDF format only.
Scanning may take longer than usual when this checkbox is selected.
The color tone may change from the source image due to corrections. In that case,
deselect the checkbox and scan.
Auto Document Fix may not be effective if the scan area is too small.
Fading correction
Corrects and scans photos and film that have faded with time or have a colorcast.
Backlight correction
Corrects photos and film that have been shot against light.
Gutter shadow correction
Corrects shadows that appear between pages when scanning open booklets.
Important
For precautions on using this function, see "
Color Pattern...
Allows you to adjust the image's overall color. You can correct colors that have faded due to
colorcast, etc. and reproduce natural colors while previewing color changes.
Adjusting Colors Using a Color Pattern
Important
This setting is not available when you select Color Matching on the Color Settings tab of
the Preferences dialog box.
Perform Scan
Scan
Scanning starts.
Note
When scanning starts, the progress will be displayed. Click Cancel to cancel the scan.
Preferences...
The Preferences dialog box opens and you can make scan/preview settings.
Preferences Dialog Box
Manual Exposure " checkbox in Advanced Mode tab, then
Gutter Shadow Correction
."