What They Say
VESA has a new set of logos to certify what it is calling ClearMR (Clear Motion Ratio) which is intended to give buyers of displays a better sense of the likely look of blurring on displays with fast motion. ClearMR is intended to replace MPRT as a way of characterising motion blur.
Moving patterns are displayed and captured with a high speed camera and an assessment of blurred and sharp pixels is made. The level of the certification reflects the ratio between blurred and sharp pixels. Backlight strobing is disabled for the testing and overshoot and undershoot are limited to avoid artefacts. Temperature and warm-up conditions are stipulated and testing is carried out by VESA-approved test centres.
LG Display and Samsung Display (which was a lead contributor) both backed the new logo and LGE said that the LG UltraGear 48GQ900, 32GQ850 and 27GP850 models are the first monitors to receive certification. Samsung said that it also had a certified OLED display and there was an HP Omen monitor on the site when we checked.
The current specification is based on SDR but a new version is under development for HDR.
What We Think
In general, I have applauded VESA’s recent certification moves, for example in its HDR logo programme and MediaSync and AdaptiveSync programmes. When I spoke with Roland Wooster of Intel who worked on those last two, he dug into quite a lot of detail about how temperature and other factors influence those metrics. Blur was a point we discussed.
I do have quite a few questions about the new programme and have reached out to VESA to get some more detail. I have been a supporter of MPRT for a long time (I checked – in April 2003 I said “We applaud and encourage this activity” by VESA in Japan) as early research suggested a clear correlation between subjective user feedback and the measurement. (BR)
