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Does the 240Hz mode needs to be on when viewing 3D content?

post #1 of 8
Thread Starter 
Hi,

On 240Hz LCD 3DTVs, does the 240Hz processing needs to be enabled all the time to display 3D content properly?

I currently own a 60Hz LCD TV and one of the reasons I've kept it so long is because I don't like watching TV/movies when this artificial processing is on. I've only seen 120Hz in stores, and it was atrocious (IMHO).

My 42-inch plasma is doing great with motion, very natural picture. The 60Hz Bravia W LCD struggles a bit obviously, but I still prefer 100x times the image on it than on 120Hz LCDs. Panning shots are especially noticeable on 120Hz.

Does 240Hz will look the same as 120Hz or will it be more natural like a plasma?

I'm currently considering the Panasonic VT25 and the Sony HX909, any help would be appreciated!
post #2 of 8
The VT25 is a 120Hz plasma (not capable of a 240Hz refresh rate). When running in 3D mode it provides 60Hz per eye so in that respect it the same fresh rate as your current 2D plasma. When the VT25 is used to veiw 2D you have the option of running it without inserting additional interpolated frames which gives the "smooth motion" effect you don't like. I don't know much about the new Sony 3D LCD models, but it probably also has the ability to turn off the smooth motion (or whatever Sony calls it) feature.
post #3 of 8
Can you provide more details how to achieve the 'smooth' feature on the vt25? This is the feature I miss from being a previous samsung 3d owner. I actually loved the effect on animated movies however I was told that the vt25 does not have this feature as it is a plasma and does not require the artifical processing.
post #4 of 8
Thread Starter 
Thanks Ron.

My main concern is having the "smooth motion" effect enabled when watching a 3D source (i.e. blu-ray movie). If it looks the same as before (60Hz) or like at the theater it's fine, but if the motion effect is noticeable I know I'll not like it.

The VT25 is a great TV on paper, but I'd stick to LCD for this room if possible because it'll probably do a better job than a plasma in daytime viewing (brightly lit room).
post #5 of 8
I would assume each TV manufacturer will be different (as I have no research to back this up). But, what I do know is both the current 55" Samsung LED and the Panasonic LED TV BOTH run in 120hz only in 3D mode.

I asked two store associates and two different stores to help me verify WHY the image was choppy. Sadly, most were at a loss until I asked them to see what refresh rate the TVs were running at and try to see if 240hz was enabled or 120hz.

Both TVs were running 120hz and choppy, while 240hz was disabled and not able to be changed at all.

So far I have found that the World Cup had some horrible, horrible cross talk issues. Monsters vs Aliens in 3D on the Samsung was choppy as well a TV commercials.

Sadly, the two best demos were the TV commercials and Panasonics "Demo" 3D video. I always hate demo videos because they are too perfect for real life scenarios. So having a 3D demo be issue free is of course there only real goal. So that was quite disappointing.


As for Plasma, I have no idea how there refresh rates may affect 3D content. I really do suggest trying to find local stores to view for yourself as you may be disappointed.
post #6 of 8
The one thing that is going to hurt 3D TV is the quality of source material. You MUST have a quality source to enjoy the effects of this format. This is what is going to make or break this new viewing feature. If a manufacturer of a panel provides a high-quality 3D processing method and you provide a quality 3D source you will enjoy the playback on that panel.

Let me clear up another misnomer about LCD panels and their refresh rate: If you have a 240HZ refresh panel, you cannot turn this off. The panel always runs at a 240HZ refresh rate. This talk about turning the 240HZ off and running at 120HZ is incorrect. The same is true of those using 120HZ panels and supposedly being able to switch them to 60HZ. If you have a 240HZ panel, any video source will be up-converted to the panel’s 240HZ rate.
post #7 of 8
Thread Starter 
Thanks for the explanation on 120/240Hz. Actually, I'm mostly concerned on removing the jerkiness of the added frames I've seen on 120Hz HDTVs, blu-ray movies looked weird. From my understanding, even if the refresh rate can't be changed, you do have a way, a setting to remove the extra frames the processing (i.e. MotionFlow) adds to the resulting image you see.

I've only experienced the Monster vs Alien demo on the Samsung LED 3DTV and I was not impressed. I'll definitely look for the VT25 and the Sony HX/XBRs and make my own mind on it. I'll update this post with my observation.

Thanks!
post #8 of 8
Quote:
Originally Posted by bruf View Post

Thanks for the explanation on 120/240Hz. Actually, I'm mostly concerned on removing the jerkiness of the added frames I've seen on 120Hz HDTVs, blu-ray movies looked weird. From my understanding, even if the refresh rate can't be changed, you do have a way, a setting to remove the extra frames the processing (i.e. MotionFlow) adds to the resulting image you see.

I've only experienced the Monster vs Alien demo on the Samsung LED 3DTV and I was not impressed. I'll definitely look for the VT25 and the Sony HX/XBRs and make my own mind on it. I'll update this post with my observation.

Thanks!

just an FYI, i have the sammy 63C7000 plasma and JUST watched MVA3D, and i only noticed ghosting in maybe 3 scenes total, and i didn't see any in the bridge scene (and i was looking for it). Look at the samsung plasmas too, they are a lot less than the pannys or sonys for the size.
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