[sane-devel] Epson V500 Gray negative scan problem
oldprofessorbear at gmail.com
Wed Apr 25 00:40:27 UTC 2012
I suspect that the software is expecting the typical orange mask found on
color negative film. This would normally be corrected for by injecting a
hefty dose of blue. When the negative (with extra blue) is converted to
positive, the blue turns orange.
I have this scanner, but haven't yet scanned b/w negatives with it. I
wonder if the problems you are seeing could have anything to do with ICE.
Though this seems most unlikely, since ICE is supposed to be shut off when
scanning b/w ...
Just throwing this out there ...
On Tue, Apr 24, 2012 at 19:43, Olaf Meeuwissen <olaf.meeuwissen at avasys.jp>wrote:
> Drasko DRASKOVIC <drasko.draskovic at gmail.com> writes:
> > [snip]
> >>> 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.
> > Yes, I supposed that, but I was not really sure. As I see, these
> > settings are more for comic strip scan, for example. I was just
> > searching setting for negative scan, to see if I can improve scan
> > quality.
> > However, here is what I discovered yesterday evening during few hours
> > of experimentation :
> > 1) Scanning film negatives in Gray gives bad quality (like bad
> > resolution/small bit depth). Looks bad in the Preview and in the Scan.
> > 2) Turning on "Media definition"
> > (http://www.xsane.org/doc/sane-xsane-medium-definition-doc.html) to
> > change the setting give orange-reddish preview. Why? Why not just
> > gray?
> I'd guess that it scans the negatives in color and just displays the
> image data obtained.
> As for all your other questions, I know much too little about XSane to
> answer so I'll leave that to more knowledgeable folks on the list.
> Hope this helps,
> Olaf Meeuwissen, LPIC-2 FLOSS Engineer -- AVASYS CORPORATION
> FSF Associate Member #1962 Help support software freedom
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