Originally Posted by bull3964
It's only when you feed it 24p material directly. So, for blu-ray it's a complete non-issue since you can just set the player to send 60hz. It only really becomes an issue if you are playing native 24fps files directly using the USB or SD card inputs.
This is correct - keep in mind it's not limited just to the USB/card inputs. It is an issue any time you are playing 23.976 content with the tv in 60Hz mode, regardless of input source. Like you said, it's a non-issue as long as you just set the player to send 60hz.
I've tried playing 23.976 mkv files directly through the ST50's built-in USB media player, and also using a media player connected via HDMI outputting 24Hz, and either way, if the tv is set to 60Hz, it automatically applies motion smoothing (soap opera effect). This is with motion smoothing disabled in both cases.
The only way to get this tv to not
display motion smoothing for 23.976 content is by having the tv in 48Hz mode, but of course that is not really an option because of the horrible flicker. Any time the tv encounters 24Hz material, whether USB/SD or HDMI, it will always apply motion smoothing when in 60Hz mode.
So bottom line, if true 23.976 playback is important to you, this is the wrong set. The only Panasonic plasma that can play 23.976 content correctly without any motion smoothing is the VT50, unless you are ok with the 48Hz flicker of the ST/GT series. The only other option is to go with a Samsung, since their E7000 and E8000 both have a proper 23.976/96Hz mode. But I can't recommend Samsung due to their fluctuating brightness issue.
Best thing to do is keep the ST50 set to 60Hz and always feed it 60Hz content, which means if you plan to play 23.976 video files, use an external media player and set it to output 60Hz. The motion of the ST50 looks great as long as you do that. Always feed it 60Hz and you're fine.