Thanks for the idea, I will try it. But I am rather satisfied now since I am sure to have a gamma of 1.8 (measured with tests on http://epaperpress.com/monitorcal/ or www.jasc.com, they give the same result). I was not really aware of that problem, as it is said on the web for "monitor calibration", I was working with sunglasses. Now my monitor appears bright to me, but I'm able to distinguish more details in all the pictures I watch ;=) Yves