Originally Posted by fluxlite
I'd also argue that 120hz monitors reduce motion blur by far less than 50%...but of course that depends on the model, whether overdrive is being used, and the transitions the measured pixels are actually making..
Not just the monitor, but there are a lot of variables. Regular non-LightBoost TN 120Hz reduces scrolling motion blur by a full 50% *if* (A) it's perfectly synchronized to VSYNC, (B) the pixel transition times are far less than a refresh, (C) the pixel step during scrolling is exact from refresh-to-refresh (consistency). Some people are MUCH more sensitive to motion blur. Stutters, microstutters, judders, framerates lower than Hz and framerates higher than Hz, creates additional motion blur:
So some web browsers such as IE10 at least do an excellent job of smooth-scrolling because it does it synchronized to VSYNC, and at exact pixel steps at a time. Actually, when we're doing mathematical perfection, such as www.testufo.com/#test=photo
in the ideal scenario (perfect frame rate match, zero stutters), you get maximum motion clarity; and it becomes easy (by human eye) to see that many 120Hz displays has almost exactly 50% less motion blur than 60Hz, in this specific test case. Since you've eliminated motion imperfections from being the weak link in motion blur.
So, VSYNC-synchronized motion at locked framerates, get the maximal improvement in motion blur, a full 50% improvement on fast-response TN monitors where pixel transition speed is a tiny fraction of a refresh (e.g. 1ms-2ms out of 8.3ms, lots of safety margin for further pixel settling), and roughly a 40% improvement on overclocked IPS 120Hz monitors (the 5ms IPS can actually be closer to ~10ms for a lot of gray-to-gray values. 10ms is longer than 1/120sec, so this creates some situations such as three overlapping refreshes
when taken with a 1/1000sec camera exposure. This bumps down the theoretical achievable 50% down slightly).Edited by mdrejhon - 8/22/13 at 2:02pm