1951 USAF Test Chart on Canon CanoScan 9000F Mk II, Against Platen Glass, Wet Mount, 4800 dpi
This is the interior of the 1951 USAF Test Chart on a Canon 9000F Mk II.
The test chart was wet mounted directly against the scanner's platen glass using standard mineral oil.
Using a test chart like this is fraught with its own set of issues, but at least it's consistent.
In terms of resolution, we can refer to en.wikipedia.org/wiki/1951_USAF_resolution_test_chart to figure out what the scanner is resolving.
Scanning at 4800 dpi doesn't appear to do awful things to the captured image, at least in terms of wet mounting this test chart.
This was scanned at 4800 dpi and 16 bits, then cropped and saved to a jpeg.
1951 USAF Test Chart on Canon CanoScan 9000F Mk II, Against Platen Glass, Wet Mount, 4800 dpi
This is the interior of the 1951 USAF Test Chart on a Canon 9000F Mk II.
The test chart was wet mounted directly against the scanner's platen glass using standard mineral oil.
Using a test chart like this is fraught with its own set of issues, but at least it's consistent.
In terms of resolution, we can refer to en.wikipedia.org/wiki/1951_USAF_resolution_test_chart to figure out what the scanner is resolving.
Scanning at 4800 dpi doesn't appear to do awful things to the captured image, at least in terms of wet mounting this test chart.
This was scanned at 4800 dpi and 16 bits, then cropped and saved to a jpeg.