Nor do I want to pontificate on subjects I don't fully understand. I don't understand why this would be the case. Some might say this crushes blacks but I'd much rather have crushed blacks than the effect I described above. Anyway, I thought I'd share that I found this effect to be nearly completely eliminated by switching my DeltaE formula to de2000 instead of de_itp. I experience this in both my SDR and HDR calibrations of ISF modes and HDR cinema respectively. ![]() I don't grasp posterization enough to attribute the term to this effect but it might be the right term. Namely, the portion of the screen which is near black is "crawly" with different shades of gray in the form of semi large pixelated boxes. Using the newest version of calman, I experience what I would call "shifty" near blacks. I have an xrite1 display pro and an lg CX. I'm just an amateur that has started to get a grip on how to use this software to calibrate my TV. I'm not well versed in much of the terminology that floats around these threads. Both Calman and colourspace are almost perfect. When I compare A/B both LUTs I can't see any noticeable difference. HDR and DV results are also very good and I can see an improvement to older versions of Calman. I did 26p 1D LUT followed by a 17^3 fixed grid 3D LUT. I think my measurements speaks for themselves. ![]() For evaluation I also used the gorgeous Excel sheet from which easily helps to bring the results in correct order highly recommended!Įverything looked perfect without any posterization, banding or other unwanted artifacts. I also measured 13p Luminance sweep and 6 Step near black and tested real world content and test patterns such as the vertical and horizontal coloramp from great disc. That's why I converted our 1000p verification patchset for calman so I can better compare the results with ColourSpace. Usually, we see only some grayscale and ColorChecker scans which are far away to be enough for evaluation. Yesterday I did some more serious tests to see how good the new Aurora engine performs.
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