Looking at the service manual for the Canon MS-8000 reveals the following
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Photosensitive element?
1) Type: CMOS CIS (image sensor
2) Density of element: 300 dpi
3) Effective elements: 3488 (effective reading length 295.3mm)? (this calculates out at 300dpi)
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Output resolution
1} Standard: 300 x 300 dpi
2) Fine: 600 x 600 dpi
3) High speed: 200 x 200 dpi
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So I guess that the native resolution is 300 x 300 dpi and there must be some sort of interpolation for the 600 x 600 scans
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I will rescan a couple of representative pages at 300 x 300 dpi, 256 level gray scale? for members to take a look at.
Hopefully this will close out the topic of finding the best resolution / bit depth / post processing to use when getting scans from the archive to people
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