Originally Posted by xkalibur
On this set, yes. I thought there was more to motion blur in LCDs than just framerate. Something about the speed at which pixels can be changed, translating to refresh rate. So I guess I was hoping that a higher native refresh, in combination with scanning backlight, could reduce the perceived blur even without interpolation.
If not then that puts my mind at ease
I have no desire for SOE, so if that is always required then I'm not missing anything.
It's true that the faster the pixel transition, the lower the blur caused from slow pixel transition (which is different than persistence-based motion blur). I believe this was a significant drawback of LCD in the past but has been largely corrected to the point that persistence-based motion blur dominates visible motion blur on modern LCDs.
More specifically, a scanning backlight allows a near 'perfect' effective pixel transition (as long as the actual underlying transition is fast enough) because the backlight is turned OFF until the transition is largely completed.
The best that can be done without activating frame interpolation (SOE) is to effectively double the effective frame rate and half the apparent persistence-based motion blur by only turning on the backlight half of the time. Backlight turns on for half period (8.3ms or 120Hz effective framerate) then turns of just before pixel transition to new value begins, then turns on after transition is completed, etc...
Now if the pixel is fast enough (and the backlight is bright enough), effective framerate can be increased above this level (and persistence-based motion blur can be reduced below this level). For example, the backlight can be strobed on for only one-quarter of the period to deliver an effective framerate of 240Hz with no motion interpolation, but this will reduce brightness by 75%. But this 60-Hz backlight blinking can also introduce noticeable flicker (which is why combining backlight blinking with frame interpolation is generally considered better).
The Soap Opera Effect is generally only an issue with 24fps cinema, where motion blur should not be an issue. For fast-action sports like hockey where even at 60fps the persistence-based motion blur is very noticeable, frame interpolation (SOE) is generally considered a big improvement in the image quality (if properly implemented).