Canon MG8100 series On-Screen Manual page 693

select the type of film and scan again.
Place documents correctly according to the type of document to be scanned. Otherwise,
documents may not be scanned correctly.
See "Placing Documents
Color Mode
Select how to scan the document.
Color
This mode renders the image in 256 levels (8 bit) of R(ed), G(reen), and B(lue).
Grayscale
This mode renders the image in 256 levels (8 bit) of black and white.
Important
Grayscale cannot be selected when Film(Auto mode) is selected for Document Type.
Black and White
This mode renders the image in black and white. The contrast in the image is divided at certain
levels (threshold level) into black and white and is rendered in two colors.
Important
You cannot select Black and White if Document Type is film.
Document Size
Select the size of the document to be scanned. When Document Type is film, 35mm Film is set.
When you select Custom, a screen in which you can specify the document size appears. Select a
Units, then enter the Width and Height and click OK.
Important
When you select Auto Detect, the image may not be scanned at the correct position and size. In
that case, change the size to the actual document size (A4, Letter, etc.) and align a corner of the
document with the corner at the arrow (alignment mark) of the Platen.
Scanning Resolution
Select the resolution at which to scan documents. The following scanning resolutions can be
specified:
When Document Type is other than film: 75 dpi / 100 dpi / 150 dpi / 200 dpi / 300 dpi / 400 dpi / 600 dpi
When Document Type is film: 300 dpi / 400 dpi / 600 dpi / 1200 dpi / 2400 dpi / 4800 dpi
Resolution
Recommended Image Correction / Auto Photo Fix / Auto Document Fix
The displayed item varies by Document Type.
Recommended Image Correction
This is displayed when Document Type is Auto Mode. Select this checkbox to apply auto photo fix
or auto document fix based on the document type.
Auto Photo Fix
This is displayed when Document Type is Photo or film. Select this checkbox to automatically
analyze the captured scene (landscape, night scene, etc.) and apply suitable corrections.
Auto Document Fix
This is displayed when Document Type is Magazine or Document. Select this checkbox to
" for details on how to place documents.