Originally Posted by johnnymacIII
The picture quality on theses sets are amazing for dark room viewing. However, I'd be interested to know if the 4500 passes the 1080p/24 Cadence test. I've noticed a lot of judder in 24p material even with cinema smooth enabled (maybe even worse as it seems to introduce some flicker to my eyes as well). Maybe I'm just sensitive to it or I've just been watching movies with where the cameraman is panning to quickly.
Fwiw, I tried Cinema Smooth with a couple Blu-ray movies on both the F5300 and F4500, and it seemed to work as advertised. Cinema Smooth does not perform any type of soap opera effect (aka frame interpolation) to smooth out the motion. It just eliminates the asymmetric 3:2 telecine judder that normally occurs when "pulling down" 24fps film-based content to 60Hz.
Since 60Hz isn't evenly divisible by 24, the odd film frames are normally displayed 2 times, and the even frames are displayed 3 times, in a continuous asymmetric 2, 3, 2, 3, 2, 3... cadence. The Cinema Smooth feature just increases the refresh rate of the display to 96Hz, so each film frame can be displayed 4 times, in a steady 4, 4, 4, 4, 4, 4... cadence, rather than using an asymmetric 3:2 pattern.
The "steadiness" of the "4:4" 96Hz Cinema Smooth cadence may make the motion seem a bit more "jerky" though, because each film frame is essentially "held" on screen for 4 refreshes. "Jerkiness" isn't the same thing as 3:2 "judder" though, if that makes any sense.
A lot of people use the term "judder", when they actually mean "jerkiness".
A typical movie projector will only display each film or DV frame 2 or sometimes 3 times btw, resulting in a 48Hz, or 72Hz display rate.
If you're used to watching movies at 60Hz on a CRT or plasma TV though, then the 3:2 cadence and judder at that refresh rate may actually seem more "natural" to your eyes than the faster (and steadier) 96Hz Cinema Smooth rate.