Scanners - True Optical Resolution
I'm after an all-in-one printer/scanner which has negative scanning ( http://www.dpreview.com/products/compare/side-by-side?products=canon_pixmamg8250&products=epson_stylusrx520&products=epson_stylusrx500&products=epson_styluscx7800&products=epson_stylusrx640&products=epson_stylusrx620&products=epson_stylusrx600&products=canon_pixmamp990&products=canon_pixmamp970&products=canon_pixmamg8120&products=canon_pixmamp980&products=canon_pixmamp950&products=canon_pixmamp800&products=canon_pixmamg8120b ) - slightly irrelevant perhaps.
However, I don't know what the true optical resolution of each one is (nor does it seem to be easy to find out generally), but I don't want to scan images with interpolation.
Could anyone offer advice?
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