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Plasma and LCD: Juttering?

Joepop
03-24-2009, 05:11 PM
Hey, I recently bought an LCDTV, but I quickly returned it, due to a "juttery" image during fast motion.

I have a quick question about that. Which offers a more solid, less juddery image? Plasma or LCD? I know plasma has a better refresh rate, does this affect my problem?

I'm not talking about actual motion blur, I'm talking about that awful flickery, choppiness you get when a object moves across the screen at a decent speed.

Does it have something to do with Hz rate? I heard that 100+ Hz completely solves it.

It's my biggest issue with picking out a new TV, so should I go plasma?

Thanks is advance.

crazyal
03-24-2009, 05:55 PM
Judder is due to movies being shot at 24fps. If the camara pans too fast the jump between fixed objects moving across the screen become noticable and if bad enough bothersome.

This isn't a function of the TV however some TV can try to correct for it. Usually the 120Hz LCDs will have software built into them to create an "in between sceen" (a sceen that splits the difference between the two). Since the TV is slipping in an extra frame it's easier to do if the TV does a 5:5 pull down. A 5:5 pulldown is showing the same frame 5 times before moving to the next (24fps can go into 120Hz 5 times).

60Hz TVs do a 2:3 pull down (it repeates one frame twice then the next frame 3 times) since 60 can't be evenly devided by 24. Adding an extra frame is a little harder since it can't be slid in in the same way everytime.

So the question is what you are talking happening all the time or only when you're watch a movie?

PFC5
03-24-2009, 05:55 PM
Welcome to the forum! :hithere:

What is the source material when you see this? If it is with fast moving video (versus film) from a cable/sat source, then it is likely the display you had.

Plasma is roughly 40+ times faster than LCD at refreshing the screen according to some info out there. It is virtually instantaneous like CRTs are/were. Usually with LCDs what you see is a smearing of the image moving not choppiness, so it could be the source is breaking up the signal and not the display.

Joepop
03-24-2009, 06:34 PM
Thanks for the help. I noticed this primarily when panning the camera in Fallout 3. Things would get so choppy that I couldn't really see anything until I stopped moving the camera. I then tried other games and noticed it in them too.

The source was a PS3, connected through component cables. I believe most PS3 games run at 30 or 60 FPS. Should that have been juddery, or was it my set?

PFC5
03-24-2009, 07:09 PM
Thanks for the help. I noticed this primarily when panning the camera in Fallout 3. Things would get so choppy that I couldn't really see anything until I stopped moving the camera. I then tried other games and noticed it in them too.

The source was a PS3, connected through component cables. I believe most PS3 games run at 30 or 60 FPS. Should that have been juddery, or was it my set?

So it was with a PS3 game(s).

Have you tried using HDMI? The reason this might effect things is that component is an analog signal compared to HDMI being digital so there could be something wrong with the component input of the DAC (Digital to Analog Conversion chip) in the display. You can get a good and cheaper (price wise) HDMI cable at www.monoprice.com.

If that doesn't solve the issue then it may just be a defective TV, but plasma will provide faster/smoother motion than any LCD out there.

Joepop
03-24-2009, 07:36 PM
Thanks, again. I already returned the TV and plan to get an AQUOS, with HDMI of course.

The only reason I didn't use HDMI before was simply because the TV had no input for it.

PFC5
03-24-2009, 08:35 PM
Thanks, again. I already returned the TV and plan to get an AQUOS, with HDMI of course.

The only reason I didn't use HDMI before was simply because the TV had no input for it.

I didn't know they still made LCD TVs without HDMI.

I would look at the Samsung LCDs, or even better look at the Panasonic or Samsung plasmas for a better experience with gaming.

I own 2 LCDs, 1 DLP, & 1 plasma and gaming is easily best with the plasma.

Joepop
03-24-2009, 08:48 PM
I would, but Plasmas don't come in the size I need. I need about a 19-22 inch for my workstation desk, and I would sit very close to it. The plasmas are also very expensive.

If you could, I have another question. What's the difference between Aquos and traditional Sharp? I wanna go with Sharp because they have 19" tvs that come in 16:9 aspect ratio, when most 10"s are 16:10.

PFC5
03-24-2009, 08:52 PM
The Aquos is their "PREMIUM" line.

Plasmas are actually cheaper than LCDs in the larger sizes, but I didn't know you wanted it that small. In that case and for heavy computer monitor use LCD is the only way to go.

Joepop
03-24-2009, 08:58 PM
My PC monitor is actually a CRT, very good quality, but I know that it'd be practically impossible to find a widescreen, HD CRT TV.

For being a "premium" line, is it very much better than their standard line?

I'd really like to go Samsung, but they're almost all 16:10 at this size.

MadMax670
03-24-2009, 11:05 PM
My buddy has a 25 or 27 inch widescreen HD tv, samsung I believe?

MadMax670
03-26-2009, 12:13 AM
Sorry, forgot to mention it was a crt...