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<TITLE>sane-devel: Re: HP C5100A (SCSI PhotoSmart) - image solid black</TITLE>
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<META NAME="Author" CONTENT="Ewald R. de Wit (erdewit@zonnet.nl)">
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<META NAME="Subject" CONTENT="Re: HP C5100A (SCSI PhotoSmart) - image solid black">
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<H1>Re: HP C5100A (SCSI PhotoSmart) - image solid black</H1>
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<!-- name="Ewald R. de Wit" -->
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<!-- subject="Re: HP C5100A (SCSI PhotoSmart) - image solid black" -->
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<STRONG>From:</STRONG> Ewald R. de Wit (<A HREF="mailto:erdewit@zonnet.nl?Subject=Re:%20HP%20C5100A%20(SCSI%20PhotoSmart)%20-%20image%20solid%20black&In-Reply-To=<20010201122509.A651@bitterling.LeidenUniv.nl>"><EM>erdewit@zonnet.nl</EM></A>)<BR>
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<STRONG>Date:</STRONG> Thu Feb 01 2001 - 03:25:09 PST
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<LI><STRONG>Previous message:</STRONG> <A HREF="0000.html">Joern Clausen: "Re: HP5300C Transparency"</A>
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Shamim Mohamed (<A HREF="mailto:shamim@drones.com?Subject=Re:%20HP%20C5100A%20(SCSI%20PhotoSmart)%20-%20image%20solid%20black&In-Reply-To=<20010201122509.A651@bitterling.LeidenUniv.nl>">shamim@drones.com</A>) wrote:
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<BR>
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<P><EM>> The PhotoSmart, however: trying to scan a slide, everything seems to be
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</EM><BR>
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<EM>> working fine EXCEPT: the image I get from xscanimage is just solid
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</EM><BR>
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<EM>> black.
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</EM><BR>
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<P>Is the slide perhaps a bit underexposed (or dark) to begin with?
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<BR>
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You can try setting the option "Exposure Time" to 300%, and then
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<BR>
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afterwards apply a gamma of > 2.
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<BR>
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<P><EM>> What's going on? Do I need to calibrate the 5100A? There is a
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</EM><BR>
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<EM>> calibration card that came with the scanner but none of the
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</EM><BR>
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<EM>> documentation I've found on the HP backend says anything about
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</EM><BR>
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<EM>> calibration.
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</EM><BR>
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<P>For prints you have to calibrate with the white card (the calibration
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<BR>
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is stored on file so you have to do this only once). For slides
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<BR>
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and negatives the scanner will recalibrate itself everytime the media
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<BR>
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type is changed or when the scanner is opened.
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<BR>
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<BR>
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<EM>> I tried scanning a print: very dark, faint blue image could be observed.
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</EM><BR>
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<EM>> However scanning a strip of negatives looks much better.
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</EM><BR>
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<P>Try recalibrating. To see the recalibrate option in xscanimage, the
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<BR>
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selected media must be "Print".
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<BR>
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<P><PRE>
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--
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-- Ewald
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<P><P><P>--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20HP%20C5100A%20(SCSI%20PhotoSmart)%20-%20image%20solid%20black&In-Reply-To=<20010201122509.A651@bitterling.LeidenUniv.nl>">majordomo@mostang.com</A>
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</PRE>
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