Drasko DRASKOVIC <drasko.draskovic at gmail.com> writes: > On Mon, Apr 23, 2012 at 12:20 PM, Drasko DRASKOVIC > <drasko.draskovic at gmail.com> wrote: >> Hi all, >> I am trying to set up my Epson V500 to scan correctly B&W negatives with >> XSane. >> >> I am using Epson Avasys driver (epkowa backend), and with iscan ! >> negative scan seem to be working very well. >> However, when I am trying to obtain scan in XSane, scanned quality is >> really bad. It looks like it has really bad resolution or bitdepth. >> >> It might be due to some settings, because when I put Scanmode to >> "color" (although I have B&W film negatives), results are with much >> better resolution, but then I just can not turn result in Gray - it >> rests orange... >> >> What is the process of Black and White negative scan, are there some >> options that I am missing ? >> >> BR, >> Drasko > > > Hi all, > after some research I can see that this can be similar problem to this > one reported long time ago : > > http://web.archiveorange.com/archive/v/O5zM9Q3LfrJPmrlJxC1J
Wow! That's a way-back-when post by me. I've since gotten a lot more familiar with iscan and can now confidently say that almost all image processing with iscan/epkowa is done in the iscan frontend. Conversion of negatives is definitely done in the frontend. > Does anybody have idea how this can be resolved ? > How autoexposure/enhancement can be set-up to be correct and resemble > to what iscan is doing ? Apart from using iscan, you cannot. The image processing module is non-free (with an effectively undocumented API) so most frontends will not be able to use it. > Can this be used : > http://www.xsane.org/doc/sane-xsane-setup-enhancement-doc.html > or these setting should be used only for lineart (i.e. commic scans) > and not for film negative scans ? That would give you a black and white (without any gray) image. I don't think that's what you're after. Hope this helps, -- Olaf Meeuwissen, LPIC-2 FLOSS Engineer -- AVASYS CORPORATION FSF Associate Member #1962 Help support software freedom http://www.fsf.org/jf?referrer=1962
