Hi, I didn't mean that you should change the resolution. With your instrument you are measuring 10 pixels at best which consist of 3 subpixels each. This is not a lot of averaging and has little to do with what you perceive from a viewing distance. Every little nonuniformity of your display will affect the readings and thus the calibration result. E.g. ISO 12646 (standard to test monitors for softproofing applications) specifies a minimum of 150 pixels to be measured by the used instrument. I'd try it with an instrument with a larger aperture or maybe yours in projector mode already improves the result. Claas Am 10.01.2014 um 19:13 schrieb Fatcat: > >> this is a 50" plasma working at 1920 x 1080 pixels , correct? >> Calculate the size of 1 pixel and compare it to the aperture of your >> instrument. >> >> Just an idea. > > Hi Claus. The aperture size is 4.5 mm, pixel size is 0.6 to 0.8 mm (hard to > measure exactly). This is a plasma working at 1920x1080 but I don't see how > changing its resolution settings may change anything, there's a patch of > continuos color for measuring purposes which is unaffected by scaling. > >