[visionlist] Low cost photometer/colorimeter

[Jim Ferwerda]

Hi Dani,

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.

http://xritephoto.com/colormunki-photo <http://xritephoto.com/colormunki-photo>

https://www.argyllcms.com/ <https://www.argyllcms.com/>

Good luck,

-Jim

James A. Ferwerda
Associate Professor
Xerox Chair in Imaging Science
Chester F. Carlson Center for Imaging Science
Rochester Institute of Technology
Rochester, NY 14623
jaf at cis.rit.edu <mailto:jaf at cis.rit.edu>
http://www.cis.rit.edu/jaf <http://www.cis.rit.edu/jaf>

> On Mar 23, 2017, at 11:13 AM, Georgeson, Mark A <m.a.georgeson at aston.ac.uk> wrote:
> 
> A question & a comment:
> 
> 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.
> 
> Comment: since luminance is invariant with distance, it shouldn't matter in principle what distance the meter is at.
> --
> Mark Georgeson
> Honorary Professor of Vision Sciences
> School of Life & Health Sciences
> Aston University
> Birmingham, UK
> Web:    http://www1.aston.ac.uk/lhs/staff/az-index/georgema
> 
> From: visionlist <visionlist-bounces at visionscience.com <mailto:visionlist-bounces at visionscience.com>> on behalf of Farid Kandil <f.kandil at uke.de <mailto:f.kandil at uke.de>>
> Date: Thursday, 23 March 2017 11:36
> To: "visionlist at visionscience.com <mailto:visionlist at visionscience.com>" <visionlist at visionscience.com <mailto:visionlist at visionscience.com>>
> Subject: Re: [visionlist] Low cost photometer/colorimeter
> 
> Dear Dani,
> 
> yes, I have got a Spyder 4.
> We use it as a photometer under Linux (Ubuntu).
> In contrast to our Minolta L 110 photometer, this was much much much less expensive, of course.
> The results are more stable than for the Minolta (since the are used for the  measurement is shielded).
> In contrast, measuring with the Minolta gives more variable responses  depending on the exact angle 
> which with you shot. However, using the Minolta, you measure the luminance felt from the exact distance
> of the subject. This is the most significant difference.
> 
> Cheers,
> 
> farid
> 
> On 22.03.2017 14:42, Dani Linares wrote:
>> Any recommendation on low cost photometer/colorimeter?
>> 
>> Anyone has experience with Spider (http://spyder.datacolor.com/display-calibration/ <http://spyder.datacolor.com/display-calibration/>)?
>> 
>> dani
>> 
>> -- 
>> Daniel Linares
>> www.dlinares.org <http://www.dlinares.org/>
>> 
>> 
>> 
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> -- 
> Dr. Farid I. Kandil
> Wiss. Mitarbeiter
> Dipl.-Psychologe
> 
> Universitätsklinikum Hamburg-Eppendorf (UKE)
> Institut für Computational Neuroscience
> 
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