Hi Kyle,
I have used the CM-2002. It's expensive, but works well. Photographing a Macbeth color chart next to your surface as Rob suggests also works if it's diffuse and your lighting is uniform. These are difficult things to guarantee in practice.
I haven't use the Colormunki, so I don't know anything about that. I wrote a somewhat out-of-date document that covers some of these methods:
http://radsite.lbl.gov/radiance/refer/sg96crs.pdf
Best of luck!
-Greg
···
From: Kyle Konis <[email protected]>
Date: January 29, 2014 10:54:02 AM PSTDear list,
I plan to build several radiance models of Alzheimer care facilities in preparation for a field study examining daylight exposures and cognitive / health outcomes in partnership with a colleague in health sciences.
The radiance work is intended to supplement the data collected from physical sensors to provide greater insight into 24-hour patters of light / dark.
I would like to measure the surface optical properties (color, reflectance) of the walls / ceilings and floors etc.
I am aware of two devices that have been used to do this.
1) The first is the X-rite Colormunki (actual name of product) that Michael Donn was using while visiting LBNL.
The second is the Minolta CM-2002 Spectrophotometer used by Mehlika Inanici.
http://faculty.washington.edu/inanici/Publications/mi-luekos2010.pdfIf anyone has experience with this task who can provide some comments on their approach it would be appreciated. (Michael and Mehlika, i will likely contact you directly!).
Best,
-Kyle