I am curious too. I am very suspicious about using the 10 degrees for « 2 degrees » work, even though I read the article. Roger From: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-bounce@xxxxxxxxxxxxx] On Behalf Of János, Tóth F. Sent: 18 septembre 2010 18:12 To: argyllcms@xxxxxxxxxxxxx Subject: [argyllcms] Re: dispcalGUI development snapshot available With this new DispcalGUI option it is possible to use the new Dispcal "-Q" option to set another (e.g. 10°) observer for spectral data. Did you tested it yet? I am curious about your results.