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69 wiersze
2.9 KiB
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<!-- received="Sat Dec 12 09:18:23 1998 PST" -->
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<!-- sent="Sat, 12 Dec 1998 14:37:33 +0100" -->
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<!-- name="Peter Kirchgessner" -->
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<!-- email="pkirchgessner@t-online.de" -->
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<!-- subject="Dark scans on HP Photosmart" -->
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<!-- id="98121214510002.01491@dld" -->
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<title>sane-devel: Dark scans on HP Photosmart</title>
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<h1>Dark scans on HP Photosmart</h1>
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<b>Peter Kirchgessner</b> (<a href="mailto:pkirchgessner@t-online.de"><i>pkirchgessner@t-online.de</i></a>)<br>
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<i>Sat, 12 Dec 1998 14:37:33 +0100</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#178">[ date ]</a><a href="index.html#178">[ thread ]</a><a href="subject.html#178">[ subject ]</a><a href="author.html#178">[ author ]</a>
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<li> <b>Next message:</b> <a href="0179.html">Chris Burns: "Re: Problems using Umax Astr 1220S scanner under SANE"</a>
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<li> <b>Previous message:</b> <a href="0177.html">Sandro Gasparetto: "Re: UMAX... It works!"</a>
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</ul>
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Hi,<br>
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<p>
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there seem to be problems with new HP Photosmart Photoscanners.<br>
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<i>>From firmware date R029 to R032, HP has dropped the support</i><br>
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of "contrast level", "Intensity level" and "Grayscale tonemap".<br>
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The missing support of "contrast level" and "intensity level"<br>
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will not allow to adjust contrast and brightness in the backend.<br>
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The corresponding sliders will not appear or are fixed at value 0.<br>
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The missing support of "grayscale tonemap" does not allow to use<br>
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the custom gamma table.<br>
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That makes it impossible to scan slides with a reasonable<br>
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brightness.<br>
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At <a href="http://www.kirchgessner.net">http://www.kirchgessner.net</a>, there is an inquiry tool "hpinq"<br>
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available for Linux (or the source for others), that lets you check your<br>
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firmware date and supported commands.<br>
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If you find a different firmware date than R029 or R032,<br>
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please send the listing generated by hpinq to me by e-mail.<br>
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<p>
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If you have a scanner with firmware date R032, there is currently<br>
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no chance to brighten images using the hp-backend. You need to use<br>
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an image manipulation program like GIMP.<br>
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<p>
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Sincerely<br>
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<p>
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Peter<br>
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<p>
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<pre>
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--
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Peter Kirchgessner
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WWW: <a href="http://www.kirchgessner.net">http://www.kirchgessner.net</a>
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e-mail: <a href="mailto:pkirchgessner@t-online.de">pkirchgessner@t-online.de</a>
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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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<!-- body="end" -->
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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="0179.html">Chris Burns: "Re: Problems using Umax Astr 1220S scanner under SANE"</a>
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<li> <b>Previous message:</b> <a href="0177.html">Sandro Gasparetto: "Re: UMAX... It works!"</a>
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<!-- nextthread="start" -->
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<!-- reply="end" -->
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</ul>
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