Vallo Kallaste wrote: > I recently aquired i1D3 colorimeter and am testing or "getting to know" it. > I noticed that colprof profile check results have very large difference > depending on the usage of dispread white compensation, -Iw. > Test data (.ti1 file) is same, the difference comes only from -Iw usage. > Monitor is in native, uncalibrated state and warmed up. Linked are two tone > response graphs from dispcalGUI, I did not use it for else. > colprof -v -qh -al (dispread with -Iw): > Profile check complete, peak err = 105.085290, avg err = 4.181563, RMS = > 7.683822 > > colprof -v -qh -al (dispread without -Iw): > Profile check complete, peak err = 4.465727, avg err = 0.536961, RMS = > 0.668549 Hi, seems like some serious problems there. Without more detail (i.e. -D 6 log of the dispread -Iw case), I can only guess, but my guess would be that there is a timing problem - the patches have not stabilized when the readings are being taken. One way of diagnosing if this is the case would be to set the ARGYLL_MIN_DISPLAY_UPDATE_DELAY_MS environment variable to a large value (i.e. 800 msec) and see if that makes the problem go away. See <http://www.argyllcms.com/doc/Environment.html> Graeme Gill.