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Had a go at my own BenQ W5000 (firmware 2.01) last night and I’m having a problem. Having read most of the long W5000 thread over at avsforum and the notes on this forum I had a plan for how to do both grayscale and CCA.
After basic user controls I did grayscale calibration of color temp “warm” in the service menu to be able to use that as color temp in the ISF menu when doing CCA. Turned of CCA in the service menu and measured primaries and entered those values into measured in CCA. My understanding is that the luminance value of the CCA measured on the W5000 can’t be used, so I left them alone. After entering measured and changing desired to correct values for Rec .709 I measured gamut again.
At this point I started going back and forth between ISF and service menu changing primaries based on feedback from CalMAN and readjusting grayscale when needed. For luminance I left the measured as they where and adjusted desired to get where I wanted. After playing with the controls a bit I got things moving the way I wanted and ended up with a greyscale with an average dE of 0,5 from IRE20-100, and a gamut with primaries and secondaries under dE 2. As a first time trying a complete calibration with CCA I was pleased with the results.
During this process I have noe idea as to how many times I swithced between service menu and ISF menu, but all settings stuck and everything looked as I expected.
At this point I changed video format from 1080p/60 to 1080p/24 to see how things looked. Having read that the W5000 has mulitiple memories based on input format that need to be calibrated I expected to have som more work to do. As expected everything was of when I checked with 1080p/24, but what really ruined my evening was the fact that when I swithced back to 1080p/60 on my signal generator to take a final reading to generate reports for the 1080p/60 calibration this was of as well!
All the values in the color temp for warm in the service menu and all values for both measured and desired in the CCA are the same as when I had things lined up, but measurments are now all over the place.
The question I’m left with now is – where did I go wrong? What happened and how can all the values be the same and the measurments be totally different?
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