Greetings,
I have a NEC Multisync LCD2690WUXi monitor, purchased in summer 2010. I use the included puck and NEC Spectraview software to calibrate it.
I've noticed that the delta-E measurement has gotten worse with each calibration. In July 2010 it was 0.32, and it stayed below 1.0 until May, 2011, when it was 1.71. This past October it was 3.14, today it is 4.57. I also note that the Display Luminance has been decreasing each time, from dead on (240cd/m2 last summer) to 212.8 today.
I have tried the calibration with the office lights both on and off, and get similar results. Is this a normal progression for this monitor? That is, should I expect this to happen after 18 months?
The only thing I might be doing differently is performing the calibration at the end of the day rather than the beginning, so the monitor is quite warm.
Thanks for any thoughts.
Ken