On Tue, 2007-09-11 at 10:57 +0200, Patrick Min wrote: > This Avasys forum post may be relevant to you: > http://www.avasys.jp/cgi-bin/lx/bbs/en/scanner-bbs/hyperbbs.cgi?mode=view;start=1;Code=5005 > > It's for the 4490, but maybe the 3490 has the same problem? > > Patrick > >
Thank you for the link. I patched and recompiled the epkowa backend, but the result is still not perfect. While there are clearly less coloured stripes/lines, and the photograph scanned is also easily discernible, fine vertical coloured lines running through the whole image still remain. It reminds me the time I had a Microtek Phantom 636cx and the backend lacked a good shading correction. Maybe this is also a less-than-perfect correction for the sensitivity unevenness of the individual pixels on the CCD? Levente
