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<!-- received="Mon May 25 13:48:37 1998 PDT" -->
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<!-- sent="Mon, 25 May 1998 16:51:32 -0400 (EDT)" -->
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<!-- name="Paul D. Robertson" -->
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<!-- email="proberts@clark.net" -->
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<!-- subject="Re: [long] Overall usage impressions" -->
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<!-- inreplyto="Pine.HPP.3.96n.980525214415.20897A-100000@mlucom6.urz.uni-halle.de" -->
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<title>sane-devel: Re: [long] Overall usage impressions</title>
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<h1>Re: [long] Overall usage impressions</h1>
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<b>Paul D. Robertson</b> (<a href="mailto:proberts@clark.net"><i>proberts@clark.net</i></a>)<br>
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<i>Mon, 25 May 1998 16:51:32 -0400 (EDT)</i>
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<p>
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<ul>
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<li> <b>Messages sorted by:</b> <a href="date.html#260">[ date ]</a><a href="index.html#260">[ thread ]</a><a href="subject.html#260">[ subject ]</a><a href="author.html#260">[ author ]</a>
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<li> <b>Next message:</b> <a href="0261.html">becka@rz.uni-duesseldorf.de: "Re: sane"</a>
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<li> <b>Previous message:</b> <a href="0259.html">Andreas Tille: "Re: [long] Overall usage impressions"</a>
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</ul>
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On Mon, 25 May 1998, Andreas Tille wrote:<br>
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<p>
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<i>> > I'm now happily scanning medium format transparencies on my 1200s (Velvia </i><br>
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<i>> > and Astia if it makes a difference, though the Velvia needs some color </i><br>
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<i>> > balance correction to look like Velvia, it scans well, my 35mm slides are </i><br>
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<i>> > the new E200, and I can't wait for it in 120). The gamma value I tend to use </i><br>
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<i>> > is between 1.6 and 1.8. I am also happily scanning 35mm transparencies, which</i><br>
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<i>> > I wasn't sure would work.</i><br>
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<i>> > ...</i><br>
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<i>> I've seen a Canoscan slidescanner under W$. The interface had a menu item</i><br>
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<i>> to select different Filmbrands and Types to get best results with them.</i><br>
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<i>> </i><br>
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<i>> I think we could implement such a feature if someone who found out some</i><br>
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<i>> good Gamma corrections for his favourite films would send them to the</i><br>
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<i>> development team so that they can collect values vor different films.</i><br>
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<i>> This would enhance the usability of slidescanners (slide extensions at</i><br>
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<i>> flat scanners).</i><br>
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<p>
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I think this is a more difficult task than it first seems. Ideally, <br>
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you'd have to figure out a good "test target" to take a picture of, then <br>
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balance each color intensity to that of the target given the same <br>
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exposure conditions for each film. While you don't have to be spot on, <br>
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given the range of films, formats, and scanners, it would be less than <br>
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trivial. However, the idea has a good deal of merit, and I'd think that <br>
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saving and restoring intensity values by name would be an interesting <br>
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start, then someone would only need to maintain a master file of common <br>
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names and values for the "Restore settings" menu selection. <br>
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<p>
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Also, I'm not sure if the image qualities need to be changed to print versus <br>
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display, and as we see more people making prints at home from inkjets, that's <br>
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going to become more important than ever. <br>
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<p>
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<i>> This is only a suggestion from a new SANE user. Unfortunately I'm not</i><br>
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<i>> so familiar with the SANE project that I can say something about the</i><br>
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<i>> realisation. Could someone comment this proposal whether it is realistic </i><br>
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<i>> or not?</i><br>
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<p>
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Well, I'm not a developer on this project either, but I think having a <br>
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"save/restore by name" configuration parameter set would be a great <br>
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addition. If the database were done per scan device, with the option to <br>
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add a generic device for all scan platforms, I think it would be very <br>
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useful for both slide and negative scanning. <br>
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<p>
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<p>
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Paul<br>
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-----------------------------------------------------------------------------<br>
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Paul D. Robertson "My statements in this message are personal opinions<br>
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<a href="mailto:proberts@clark.net">proberts@clark.net</a> which may have no basis whatsoever in fact."<br>
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PSB#9280<br>
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<p>
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<p>
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<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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<p>
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<ul>
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<!-- next="start" -->
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<li> <b>Next message:</b> <a href="0261.html">becka@rz.uni-duesseldorf.de: "Re: sane"</a>
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<li> <b>Previous message:</b> <a href="0259.html">Andreas Tille: "Re: [long] Overall usage impressions"</a>
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