Dell U2311h/mac gamma problems

Started Mar 27, 2013 | Discussions thread
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DanDP
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Dell U2311h/mac gamma problems
Mar 27, 2013

I just calibrated my Dell U2311h monitor with a Spyder 4 Pro but when I visit this website:
http://www.imaging-resource.com/arts/moncal/calibrate.htm
my system fails the Gamma test - the small rectangle is clearly visible inside the larger rectangle even from a distance. My system however passes the White Point and Black Point test with flying colors (I can see values all the way to 5 and 254)
Do you have any suggestions how I can adjust the gamma on my mac? I am running the Lion version of OSX and it is my understanding that I should use gamma 2.2. I am happy with the color etc, I just can't figure out what is going on with the gamma and how to fix it.

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