<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi Dani,<br class=""><br class="">For a low cost system I’ve been happy with the XRite Colormunki Photo device with the Argyll CMS freeware. Allows the Munki to work as a Colorimeter/Spectrophotometer for both reflective and emissive measurements.<br class=""><br class=""><a href="http://xritephoto.com/colormunki-photo" class="">http://xritephoto.com/colormunki-photo</a><br class=""><br class=""><a href="https://www.argyllcms.com/" class="">https://www.argyllcms.com/</a><br class=""><br class="">Good luck,<br class=""><br class="">-Jim<br class=""><br class="">James A. Ferwerda<br class="">Associate Professor<br class="">Xerox Chair in Imaging Science<br class="">Chester F. Carlson Center for Imaging Science<br class="">Rochester Institute of Technology<br class="">Rochester, NY 14623<br class=""><a href="mailto:jaf@cis.rit.edu" class="">jaf@cis.rit.edu</a><br class=""><a href="http://www.cis.rit.edu/jaf" class="">http://www.cis.rit.edu/jaf</a><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Mar 23, 2017, at 11:13 AM, Georgeson, Mark A <<a href="mailto:m.a.georgeson@aston.ac.uk" class="">m.a.georgeson@aston.ac.uk</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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<div class="">It would be really useful to know whether you (or someone) has Matlab software to read the Spyder. If it's custom-written (and doesn't come with the device) it might be possible to make such software freely available via the Mathworks 'user-contributed'
website, or via the Psychtoolbox.</div>
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<div class="">Comment: since luminance is invariant with distance, it shouldn't matter in principle what distance the meter is at.</div>
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<div class=""><font class="Apple-style-span" face="Calibri">Mark Georgeson</font></div>
<div class=""><font class="Apple-style-span" face="Calibri">Honorary Professor of Vision Sciences</font></div>
<div class=""><font class="Apple-style-span" face="Calibri">School</font><span style="font-family: Calibri; " class=""> of Life & Health Sciences</span></div>
<div class=""><font class="Apple-style-span" face="Calibri">Aston University</font></div>
<div class=""><font class="Apple-style-span" face="Calibri">Birmingham, UK</font></div>
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<div class=""><font class="Apple-style-span" face="Consolas">Web: <a href="http://www1.aston.ac.uk/lhs/staff/az-index/georgema" class="">http://www1.aston.ac.uk/lhs/staff/az-index/georgema</a></font></div>
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<span style="font-weight:bold" class="">From: </span>visionlist <<a href="mailto:visionlist-bounces@visionscience.com" class="">visionlist-bounces@visionscience.com</a>> on behalf of Farid Kandil <<a href="mailto:f.kandil@uke.de" class="">f.kandil@uke.de</a>><br class="">
<span style="font-weight:bold" class="">Date: </span>Thursday, 23 March 2017 11:36<br class="">
<span style="font-weight:bold" class="">To: </span>"<a href="mailto:visionlist@visionscience.com" class="">visionlist@visionscience.com</a>" <<a href="mailto:visionlist@visionscience.com" class="">visionlist@visionscience.com</a>><br class="">
<span style="font-weight:bold" class="">Subject: </span>Re: [visionlist] Low cost photometer/colorimeter<br class="">
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<div bgcolor="#FFFFFF" text="#000000" class=""><font size="+1" class="">Dear Dani,<br class="">
<br class="">
yes, I have got a Spyder 4.<br class="">
We use it as a photometer under Linux (Ubuntu).<br class="">
In contrast to our Minolta L 110 photometer, this was much much much less expensive, of course.<br class="">
The results are more stable than for the Minolta (since the are used for the measurement is shielded).<br class="">
In contrast, measuring with the Minolta gives more variable responses depending on the exact angle
<br class="">
which with you shot. However, using the Minolta, you measure the luminance felt from the exact distance<br class="">
of the subject. This is the most significant difference.<br class="">
<br class="">
Cheers,<br class="">
<br class="">
farid<br class="">
</font><br class="">
<div class="moz-cite-prefix">On 22.03.2017 14:42, Dani Linares wrote:<br class="">
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<div dir="ltr" class="">Any recommendation on low cost photometer/colorimeter?
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<div class="">Anyone has experience with Spider (<a moz-do-not-send="true" href="http://spyder.datacolor.com/display-calibration/" class="">http://spyder.datacolor.com/display-calibration/</a>)?</div>
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<div class="">dani<br clear="all" class="">
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-- <br class="">
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<div dir="ltr" class="">Daniel Linares<br class="">
<a moz-do-not-send="true" href="http://www.dlinares.org/" target="_blank" class="">www.dlinares.org</a>
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<pre class="moz-signature" cols="72">--
Dr. Farid I. Kandil
Wiss. Mitarbeiter
Dipl.-Psychologe
Universitätsklinikum Hamburg-Eppendorf (UKE)
Institut für Computational Neuroscience
Martinistraße 52
20246 Hamburg
Geb. W36 / Raum 104
Tel +49 (0)40 7410-57166
Lab +49 (0)40 7410-59828
Fax +49 (0)40 7410-54882
Email <a class="moz-txt-link-abbreviated" href="mailto:f.kandil@uke.de">f.kandil@uke.de</a></pre>
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