Originally Posted by meierlde
It is a flat bed scanner but with film attachments. Easily does 2400 dpi and will go higher but for slides 4800 which is the next setting is overkill as slide film does not have that kind of resolution.
I think what you are seeing is a limitation of flatbed scanners which have a true optical resolution of around 2000 dpi regardless of their outrageously inflated technical specs. I think my canoscan 9000 claims 9600 dpi yet struggles to achieve 2k real on a resolution target.
Slide film can definitely benefit from 4000+ dpi scans if the film is a sharp capture.
However scanning at high dpi is an incredible chore -- it takes a really long time and you are left with humongous files. My strategy has been to use 8bit 2700 dpi scans for the majority of personal slides and only go to 5400 for select images. This is on a dedicated Minolta film scanner (which to my surprise actually achieved it stated resolution of ~5400 dpi)
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