Canon MG8100 series On-Screen Manual page 809

Set a Smaller Film Cropping Size
Select this checkbox to display 95% (in width and height) of the area displayed for the standard
film size.
Important
This setting is not applied when scanning with the ScanGear screen displayed.
Advanced Mode Settings
Enable 48/16 bit Output
When Select Source is film on the Advanced Mode tab, select this checkbox to display Color(48bit)
and Grayscale(16bit) in Color Mode.
Important
Some applications cannot receive images scanned in Color(48bit) or Grayscale(16bit), or
may close when such images are received.
Note
When Color(48bit) or Grayscale(16bit) is selected for Color Mode, deselecting this checkbox
changes Color(48bit) to Color and Grayscale(16bit) to Grayscale.
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