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<TITLE>sane-devel: Re: transparency scanner adapters</TITLE>
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<H1>Re: transparency scanner adapters</H1>
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<STRONG>From:</STRONG> Deiters (<A HREF="mailto:ukd@xenon.pc.Uni-Koeln.DE?Subject=Re:%20transparency%20scanner%20adapters&In-Reply-To=<200103181749.SAA08009@xenon.pc.Uni-Koeln.DE>"><EM>ukd@xenon.pc.Uni-Koeln.DE</EM></A>)<BR>
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<STRONG>Date:</STRONG> Sun Mar 18 2001 - 09:49:41 PST
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<P>
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<LI><STRONG>Next message:</STRONG> <A HREF="0149.html">Peter Fales: "Possible Kodak DC-240 backend?"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0147.html">m1garandusa@netscape.net: "Re: transparency scanner adapters"</A>
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<P>
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The problem with the "triangles" are these:
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<BR>
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<P>- Your flatbed scanner has a limited optical resolution. A slide is
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25 mm wide; if you scan that at 600 dpi, this is equivalent of
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scanning a full page (A4 or Letter format) at 75 dpi.
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So you will not see fine details of the slide!
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<BR>
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<P>- If you have framed slides, they will not be lying flat on the
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scanning glass, and hence be slightly out of focus.
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<P>- The light distribution within the "triangle" is not perfect.
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<BR>
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<P>Much depends on what you want to use the scans for: If you merely
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<BR>
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want to have a few gifs for your home page, the triangle is OK.
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But for quality output, for making prints, or for archiving you
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<BR>
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want to have at least 2400 dpi resolution.
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<BR>
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<P>You can purchase a film scanner (HP, Canon, Nikon) or a flatbed
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<BR>
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scanner with a slide tray (or at least a changeable optic system)
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<BR>
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(Umax?).
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<BR>
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<P>I tried the "triangle" and finally settled for the Canon film scanner.
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<BR>
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<P>Ulrich Deiters
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<BR>
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<P><P><PRE>
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--
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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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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0149.html">Peter Fales: "Possible Kodak DC-240 backend?"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0147.html">m1garandusa@netscape.net: "Re: transparency scanner adapters"</A>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Sun Mar 18 2001 - 09:47:33 PST</EM>
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