50, 100 Hz / 120 Hz, flicker, judder discussion thread

[petetherock]

Friends
I get asked this so I might as well post this here:

Why is 100 or higher Hertz useful?

Some newer model LCDs have this function, which tends to help reduce motion blur and jitter, BUT it does not eliminate it totally.

Not everyone will notice the difference, and you should not lose any sleep over the lack of it.

Looking at the many demos, it's not hard to see why. The benefits were there to see right in front of your eyes: sharper pictures, with clearer and better-defined surfaces, and smoother movement than you get from today's LCD screens.

Well, almost. For example, both JVC and Panasonic had 37in LCD TVs on their stands, each running at 100Hz. We could easily see the improvements the faster refresh rate made, but unfortunately only if we were within a cat's whisker of the screen, which is how most IFA attendees were eyeing the tellies. While flowers or buildings stood out more clearly than than they did on the old-style 37in displays set-up as a comparison, our eyes just couldn't pick-up that improvement when more than a couple of metres away from either 100Hz screen.

Here's the deal. Current LCDs refresh the picture at a rate of 25-60Hz, depending on whether they're aimed at the European or US markets, respectively. They essentially operate at the same rates as the HD source material: 25fps or 30fps for 720p and 1080p content, and 50 or 60 fields per second for 1080i pictures. Each field comprises only half the picture, so those 50Hz and 60Hz interlaced - hence the 'i' - are effectively 25 and 30 complete images per second.

Moving up to 100Hz means running the source at 100 fields per second or 50fps. Since there aren't that many fields or frames in the source material, the TV has to invent them, using complex calculations to work out what the extra frames and fields look like.

So if a soccer ball moves eight pixels from left to right between frames one, two and three, the TV can generate two extra frames between one and two, and two and three, in which the ball moves four pixels. The result: five frames in which the ball moves a total of eight pixels, but it does so, to the eye, more smoothly than before.

The upshot, the various vendors claimed, is an end to the ghosting effect sometimes seen in LCD TVs: that slight blurring of moving images caused because the new image is drawn even before the old one has faded away.

Some TVs we saw did a better job than others, though with demo images it's always hard to be sure the manufacturer hasn't simply picked a sequence that shows the improvement rather better than a typical HD TV broadcast would. And, again, how much difference it makes when you're sitting on your sofa, well away from the screen will be entirely subjective.

And that's the crucial point: try before you buy. Does 100Hz technology make for smoother motion and thus a better picture? Yes. Will it make for an improved home viewing experience? Possibly. Take a look at the screen in a shop, running real TV programmes, first and then make up your mind.

The most important again as always:

Let Your Eyes Be The Judge.



Comments and contributions on which models have it are invited and will be posted here.


Cheers

[petetherock]

Telecine judder

http://en.wikipedia.org/wiki/Television_standards_conversion


The “3:2 pulldown” conversion process for 24frame/s film to television (telecine) creates a slight error in the video signal compared to the original film frames.
This is one reason why NTSC films viewed on typical home equipment may not appear as smooth as when viewed in a cinema. The phenomenon is particularly apparent during slow, steady camera movements which appear slightly jerky when telecined.
This process is commonly referred to as telecine judder.
PAL material in which 2:2:2:2:2:2:2:2:2:2:2:3 pulldown has been applied, suffers from a similar lack of smoothness, though this effect is not usually called “telecine judder”.
In effect every 12th film frame is displayed for the duration of 3 PAL fields (60 milliseconds) -- whereas the other 11 frames are all displayed for the duration of 2 PAL fields (40 milliseconds). This causes a slight “hiccup” in the video about twice a second.
Television systems converters must avoid creating telecine judder effects during the conversion process.
Avoiding this judder is of economic importance as a substantial amount of NTSC (60 Hz, technically 29.97frame/s) resolution material that originates from film -- will have this problem when convered to PAL or SECAM (both 50 Hz, 25frame/s).

[petetherock]

More on Judder:

http://en.wikipedia.org/wiki/Judder

http://www.xtremeplace.com/yabbse/index.php?topic=45969.15

What is judder?
Technically, the term judder was introduced to explain a phenomenon that occurs when movies and other film sources are converted for home viewing using 3:2 pulldown, which uses 4 frames from the original to create 5 interlaced frames in the output. As a result, 3:2 pulldown shows odd frames for 49.98 milliseconds and even frames for 33.33 milliseconds. This mismatch of timing produced a jerky effect that was eventually dubbed as judder.

[zabuton]

One question that I always have in mind, will 100/120Hz LCD helps to reduce eyestrain after watching for a long period of time?

[luigi545]

One question that I always have in mind, will 100/120Hz LCD helps to reduce eyestrain after watching for a long period of time?

From what i know , the 100/120Hz found on flat panels is different from what we commonly know from CRT 100Hz.

Please correct me if i m wrong about my input.

[audiovideo]

don't think there will be definite ans like X300 is better than W400 / W300 Or vice versa

[petetherock]

An explanation:

120-Hz Technology: The New 1080p

If 1080p resolution was the flat-panel differentiator last year, 120-Hz technology is what's setting one LCD apart from another in 2008. The use of 120-Hz refresh rates came about as a way to address a common LCD drawback: motion blur, or the perceived smearing of images during fast-moving scenes. Doubling the video frame rate from 60 to 120 Hz can help reduce incidents of blurring.
Why blurring occurs is actually a rather technical discussion; it's related to the fact that most LCDs use a continuously lit backlight, with each frame presented in what's called a "sample and hold" fashion, so that all the pixels are kept lighted for the duration (roughly 60 milliseconds for 60-frame-per-second video) of the entire frame. By contrast, images on CRTs or plasma TVs are "flashed" on screen for short periods before going dark before the next frame is presented; our eyes interpret this series of sequential individual frames as motion. With sample-and-hold, we can perceive the lack of breaks in the light between frames as blurring. That's why motion blur can still occur even in LCDs with very fast claimed response times.
There are several ways to remedy this problem, including the use of flashing backlights, or black-frame insertion, where a black or darker frame, identical to the one before it, is inserted between actual video frames. While this effectively creates frame breaks, it also tends to reduce the image's overall brightness. That's why another frame-insertion technology, called motion-adaptive interpolation, is increasingly being used. With this method, the TV compares prior and succeeding frames, then generates an intermediate frame that's inserted between each of the 60 frames that appear each second on broadcast programming.
Most of the major LCD brands currently reserve 120-Hz technology for their step-up models, often calling it by a proprietary name: Motionflow (Sony), McFi (Samsung), TruMotion (LG), Clear Motion Drive II (JVC), and ClearFrame (Toshiba). But 120-Hz technology will likely become more widespread starting next year, even in lower-priced sets. Budget-priced leader Vizio, for example, is now including its version (Smooth Motion) in its 42- and 47-inch 1080p XVT-series sets, which are priced at $1,500 and $1,900, respectively.
Making the situation a bit more confusing is that many companies are marrying 120-Hz technology with video processing circuitry designed to reduce the jerkiness — or judder — that can occur with 3:2 pulldown, which is used to convert 24-fps film-based content to 30/60-fps video. Not surprisingly, companies also tend to give these anti-judder technologies proprietary names, such as Bravia Engine (Sony), Reel120 (Hitachi), and AutoMotion Plus (Samsung). One additional benefit of 120-Hz technology is that it has the potential for better display of 24-fps film content since it's already an even multiple of 120 (24 x 5). With so-called 5:5 pulldown, all the frames are displayed for the same amount of time, avoiding the jerkiness that can come with the uneven cadences of 3:2 pulldown.

[Kenshin79]

i was looking @ the Panasonic 32" LX800M vs Sony 32S400 next to each other. both were showing goal highlights of EPL last season.

Both picture qualities were great, but during certain fast scenes, the Sony suffered greatly from motion blur and artifacts. i was standing about 2M away. hence, to those who watch a lot of sports, it is really crucial you look at sports videos to judge if the TV make a difference to your eyes.

[petf69]

anyone have experience to share?

tks

[NineNineNine]

anyone have experience to share?

tks

Does the Sony 24p True Cinema have a 100 Hz / 120 Hz feature. I am trying to understand why you post your question in this thread?

[petf69]

Does the Sony 24p True Cinema have a 100 Hz / 120 Hz feature. I am trying to understand why you post your question in this thread?



this is stange....lol.....i posted a new thread...and end up merged with this thread........:s13:

[mikezuper]

sony and samsung will come up with 200/240hz feature in their new model.

To me, 100/120hz doesnt differ much on my LCD TV.
At times, it brings problem to the scrolling text on CNA.
However, panasonic 100/120hz seems pretty decent though, no blurring.

[petetherock]

For those who want info on this and have not searched for the info yet...
Here it is

[Hellscythe]

After about 3 weeks of research, I have basically narrowed down my choice of 32" LCD tv to Sony Bravia KLV-32S400A and Panasonic 32LX800. I will be using the tv mainly for mainly ps3 gaming and SD broadcast.

The main difference between the 2 imo is that S4 has a better design and surround sound, while LX800 has refresh rate of 100Hz (compared to 50Hz for S400A.

Can anyone advice me whether the refresh rate is a important factor as i will be mainly using the tv for ps3 gaming.

[Hellscythe]

For those who want info on this and have not searched for the info yet...
Here it is

thanks for merging my thread. 1 question i have is that is refresh rate important for 32"? cuz some salemans i spoke to claim not much diff for 32". I haven really seen fast moving scenes on either S400A or LX 800 so I dont really know. Though kenshin79 commented that it does for soccer.

[ahkaiz]

is it better to have 100hrz rather than no?
and LX800 provide a better panel than sony S series..

[petetherock]

A good read:

http://www.projectorcentral.com/frame_interpolation.htm

*** this article is also important for flatscreen TVs as well as projectors ***

An excerpt:


Is Frame Interpolation Important?
Evan Powell, January 20, 2009
ProjectorCentral.com (http://www.projectorcentral.com/)

In the past four months we've seen several new 1080p projectors released with a feature known generically as frame interpolation. The new Epson 7500UB and 6500UB have it, as does the Sanyo Z3000 and the Panasonic AE3000. Epson calls it FineFrame, Sanyo calls it Smooth Motion, and Panasonic calls it Frame Creation. But it is all the same concept: the projector evaluates the differences between individual frames of film or video, and creates interim frames to be inserted between the real frames in the source. The objective is to reduce motion judder and provide a cleaner, more artifact-free viewing of film and video material.
Two complaints have been circulating about frame interpolation technology. One is that it can make a movie look more like digital video, something which people are calling, somewhat derisively, the Soap Opera effect. In essence, the complaint is that it makes a film, which has a slightly surreal and sensual quality, look like a CNN Situation Room HD broadcast, which by comparison is hard, cold, clear, and real (sometimes disturbingly real). When James Bond begins to look like Wolf Blitzer, you know you have a problem.
The second complaint is that, while frame interpolation can reduce or eliminate much of the film judder we see in movies, it sometimes introduces other artifacts which may be just as problematic. For example, instead of the judder, we may see some ghosting as subjects move across the screen, or some unnatural disintegration of the picture during momentary fast pans of the camera. These complaints are well-founded. Some frame interpolation systems do indeed produce these undesirable side effects. But if it is done well, the picture can be virtually free of artifacts while it retains that mystical film quality. Ideally, what you will see is a clean, stable, but still filmlike image that many will find irresistibly engaging.






If you watch a lot of sports in HD on channels broadcasting in 1080i, you may find frame interpolation particularly attractive. For whatever soap opera effects are present in the video system you have, they are irrelevant in sports--you want that maximum reality effect. Of course, Fox Sports, ESPN, and ABC all broadcast in 60p format, so frame interpolation is not needed. But with sports broadcasts in 1080i, it can help.
Similarly, music concerts on HD discs may be enhanced with frame interpolation. Again, if there is any soap opera effect, it is a good thing--you want the Eagles Farewell 1 Tour to look as real as possible. It looks amazing in HD DVD, and hopefully they will release it in Blu-ray one of these days.
In the end, even if the frame interpolation system on your projector does have a particularly exaggerated digital video effect, this can work to your advantage in sports, music concerts, and animated films. You can always turn it off if you don't care for what it does to your traditional movies. When it comes to traditional films, the digital video effect can be disturbing. We find that the Epson 6500UB produces a noticeably greater degree of undesirable "reality" than do either the Panny AE3000 or the Sanyo Z3000. Furthermore, on the Epson 6500UB there are occasional ghosting artifacts and other oddities. We don't see these nearly as frequently on either the Sanyo or the Panasonic projectors. For these reasons we consider the Epson implementation of frame interpolation, at least in its current iteration, to be the least successful of the three.

[twinman]

Anyone know whether the 100Hz in panny LCD LX800 or LZ800 series can be turn off if not required?

cant find it on the net and most salesman spoke to has no idea as well.

[petetherock]

Many new TVs again boast of long names and fancy terms for motion adaptation, flow, 72 fps, 120 Hz etc etc

Most of these appear on LCD TVs. Its an issue which the makers try to compensate with different technologies.

So the best way is to play some fast moving or panning movie scene - Fast and Furious / Red Cliff II etc

Watch for the blur and decide if this TV is for you.

Note many TVs may claim to accept 24 fps, but very few can actually handle a 24 fps signal (eg Pioneer can), most will convert it to a 50 / 60 fps or higher signal.

Judge with your eyes.

[ac3knight]

Many new TVs again boast of long names and fancy terms for motion adaptation, flow, 72 fps, 120 Hz etc etc

Most of these appear on LCD TVs. Its an issue which the makers try to compensate with different technologies.

So the best way is to play some fast moving or panning movie scene - Fast and Furious / Red Cliff II etc

Watch for the blur and decide if this TV is for you.

Note many TVs may claim to accept 24 fps, but very few can actually handle a 24 fps signal (eg Pioneer can), most will convert it to a 50 / 60 fps or higher signal.

Judge with your eyes.
u missed out one important comparison, whether 100/120Hz really matters on a 32" screen.

the output image on a smaller LCD tv is "compressed" into a smaller space as opposed to a large 40-50" LCD tv, hence 100/120Hz may not really make much of a difference (so far only pioneer is the only brand with 32" with 100/120Hz).

furthermore, companies are using the 100/120Hz to charge a very large price premium for that feature, which might not be worth it.

also i believe support for 24p playback is important, as many videos r encoded at 23.976 FPS (especially if u r watching content off a hdd media player)

[warr]

if u are buying a 32 or 37 inch LCD tv, u don't need Full HD, don't need 100Hz.
pay more attention to other areas instead.

seriously for 32-37, u won't see differences between 1080p or 1080i. a lot of tests are available for u to be convinced. and how much time do u spend on watching the true HD content?

well, why spend $ on some useless specification? most people 90% just turn on the tv to watch SD content.

[petetherock]

Kudos to mike zuper

This thread lists the current displays with 24 fps (TRUE) capability

http://forum.blu-ray.com/showthread.php?t=5155


If your display is not on the list, then all that 24 fps write on the side of the box is techno babble, and you will still see judder due to poor implementation of the 24 fps signal.

[warr]

Kudos to mike zuper

This thread lists the current displays with 24 fps (TRUE) capability

http://forum.blu-ray.com/showthread.php?t=5155


If your display is not on the list, then all that 24 fps write on the side of the box is techno babble, and you will still see judder due to poor implementation of the 24 fps signal.

Those are North american models.
Most are the same models as those in Asia, e.g. replace LN by LA for samsung models.
but for the LG 47LG60, the american models are better than the models here 47LG60FR.
The former is 120Hz with 4HDMI, but the latter available in SG has no 120Hz and only 3 HDMI.

so, u need to be careful when using those list. gotta search again for the equivalent local models.

[warr]

CNet also has a good article on this topic:

http://reviews.cnet.com/4520-6449_7-6792632-1.html

[Bieffe]

Want to get a 37" LCD soon.

Besides the usual needs....I became puzzled with 2 items and what benefit they bring as with or w/o them price is quite different.

Of course all need to be FULL HD.

Considering I can only get 1. Which is more impt?

My Choice is narrowed to LG LH35 and Samsung Series 5.

Who to take?

[seowcc]

Bro, i just finished my shopping spree for LCD TV and have my Panny TX37LZ800MS delivered today. Very happy with the quality and especially sound system :)

From my recent experience and research (yes, research alot), HD or HD-Ready makes little difference for 42" and below.. However, 100Hz or 50Hz does especially when on running text like Channel News Asia Stock Info. Check the color when viewing TV and check the contrast/brightness settings too because sales man may purposely sway you to consider certain models.. Forget about HD demo as they all look very good..

Both Samsung and LG has very vibrant colors but do check out their TV quality hor..

[Bieffe]

Bro, i just finished my shopping spree for LCD TV and have my Panny TX37LZ800MS delivered today. Very happy with the quality and especially sound system :)

From my recent experience and research (yes, research alot), HD or HD-Ready makes little difference for 42" and below.. However, 100Hz or 50Hz does especially when on running text like Channel News Asia Stock Info. Check the color when viewing TV and check the contrast/brightness settings too because sales man may purposely sway you to consider certain models.. Forget about HD demo as they all look very good..

Both Samsung and LG has very vibrant colors but do check out their TV quality hor..
Liek that say means a HD ready with 100Hz will be better and cheaper than a Full HD w/o 100Hz?

[seowcc]

Liek that say means a HD ready with 100Hz will be better and cheaper than a Full HD w/o 100Hz?

For 42" and below, I will take 100Hz with HDR than 50Hz with FHD.

[BERSERK1980]

so 100hz is very important la :s11:

[warr]

so 100hz is very important la :s11:

for all white scene, u will probably see flicker on a 50Hz. if u have a sharp eye, u will
notice flickering. no such problem on a 100Hz.

as already mentioned, 100Hz > Full HD. of course another qn is whether u can find a 100Hz
with HD ready on a LCD these days. LCDs are so full HD packed, while a lot of other aspects
are still not good.

[Bieffe]

is quite easy to get HD Ready with 100Hz mah. The prices are very similar to the full HD w/o 100Hz. Thats why so tuff to decide.
Cos playing blueray and PS3 and dvds i reckon the full HD more IMPT ya?
When u know too much it becomes a curse.....buy on tv so complicated. hahhaha/

[seowcc]

so 100hz is very important la :s11:

Personal experience - when I was deciding between Panasonic TX37LZ800MS and 37" LG35 HD last week.. The sales person was very helpful to bring these 2 TV side-by-side, set the contrast level to be similar and let me compare..

For HD content, both are similarly match but Panny has better color contrast despite it is 10000:1 (LG is Dynamic 80000:1).. LG's color is equally vibrant but appears rather waxy..

For TV content at fit-to-screen size, Panny definitely has better upscaling processing then LG.

Finally, the sales person switch to Channel News Asia. My wife and I both clearly can see the 100Hz and 50Hz difference.. LG's running tickers flickers while Panny has very minimal...

Final Score is :

HD Content : Panny (8.5/10), LG (8/10)
TV Content : Panny (8/10), LG (7/10)
CNA Tickers : Pannh (8/10), LG (5.5/10)

It's a done deal for me :s12:

[Dr.Vijay]

As mentioned by the folks here, this is most useful when reading scrolling text in those news channels and the likes.

What these TV manufacturers like to boast is the smoothness - which in my opinion, looks unnaturally smooth. You would rather have that function off - which then means there's limited benefit for this feature.

so 100hz is very important la :s11:

[seowcc]

so 100hz is very important la :s11:

You gotta be clear about what you want bro.. If gaming is important, than refresh rate and response time is important.. If TV is key, then checkout the TV quality.

Buying a LCD TV is really like buying a car.. You need to decide between comfort,
fuel efficieny, power etc... If you want everything, then pay more $$$ for it ;)

[chrisvin]

You gotta be clear about what you want bro.. If gaming is important, than refresh rate and response time is important.. If TV is key, then checkout the TV quality.

Buying a LCD TV is really like buying a car.. You need to decide between comfort,
fuel efficieny, power etc... If you want everything, then pay more $$$ for it ;)
very true :)

haha for me, the panasonic G10/11 is "everything" to be me now....pity too exp for me @ moment :(

[Bieffe]

The more I see the more confused I get. Finally settled for something x2 my budget!

Becos I basically wanted everything. And instead of a 37" I got 40" after all 37" is really very odd. And after checking out a TV with and w/o 100Hz (Full HD vs Full HD) the one with 100Hz wins. As for HD Ready 100Hz vs Full HD w/o 100Hz i feel/hear/see that the Full HD w/o 100Hz is better. But when u see CNA....the 100Hz HD Ready better.

My pick is a Samsung series 6 (B650) 40"! Damaged $2k+ with free 26"LCD+delivery+wall mount

Tomolo eat air!

[BERSERK1980]

thanks for all the input guys, bought a 32inch panasonic :)

[nikicody]

i hv a 100hz, but when i press info, the pop up screen says 1920x1080i @ 50hz. itd the same for all channels. is there something i need to do to push it to 100hz? i'm using a samsung p450b. thks

[Bieffe]

i hv a 100hz, but when i press info, the pop up screen says 1920x1080i @ 50hz. itd the same for all channels. is there something i need to do to push it to 100hz? i'm using a samsung p450b. thks
Not sure if this is the same I also Samsung but a different model. Go to picture settings under advance.
There you should see option to 100Hz.

[nikicody]

Not sure if this is the same I also Samsung but a different model. Go to picture settings under advance.
There you should see option to 100Hz.

i tried to find the option since the tv came last month. cant find. but i'll search for it later when i get home. thanks.

[rfseifer]

i dont know if this fits into the discussion, somehow a mth ago, i realised that my 1 of 2 lcd tv which both boast 100/120hz doesnt really have any effect, motion blur, scrolling text from CNA cant be read also.

called the customer service, technician came and went off, saying that it was signal problem, no fault with the TV. both tvs are identical, setup is almost exact only in different room, using SCV HD box, even the same scv cable point, using splitter. 1 tv was fine with reading scrolling text etc, the other unreadable at all. i am puzzled why only 1 works but not the other one..

is it true that signals play the part? instead of the tv's boasted capabilities of displaying at 100hz/120hz

[cscs3]

i dont know if this fits into the discussion, somehow a mth ago, i realised that my 1 of 2 lcd tv which both boast 100/120hz doesnt really have any effect, motion blur, scrolling text from CNA cant be read also.

called the customer service, technician came and went off, saying that it was signal problem, no fault with the TV. both tvs are identical, setup is almost exact only in different room, using SCV HD box, even the same scv cable point, using splitter. 1 tv was fine with reading scrolling text etc, the other unreadable at all. i am puzzled why only 1 works but not the other one..

is it true that signals play the part? instead of the tv's boasted capabilities of displaying at 100hz/120hz

Dont think so. What is your model?

[cscs3]

i hv a 100hz, but when i press info, the pop up screen says 1920x1080i @ 50hz. itd the same for all channels. is there something i need to do to push it to 100hz? i'm using a samsung p450b. thks

If not wrong. I think model p450 does not have 100hz?

[rfseifer]

Dont think so. What is your model?

Sharp Aquos A53M

[nikicody]

Not sure if this is the same I also Samsung but a different model. Go to picture settings under advance.
There you should see option to 100Hz.

hi, i tried, theres no option to change. for the tv model, yes, its supposed to be 100hz. any suggestions wat i can do from here? thanks alot.

[nikicody]

If not wrong. I think model p450 does not have 100hz?

i think have. the sticker on the tv panel says so. haha.

[cscs3]

i think have. the sticker on the tv panel says so. haha.

Is P450 a series 4? Some older serial 5 eg 32" one also do not have 100Hz feature.

[petetherock]

This website has some explanations:


http://revision3.com/hdnation/welcome

[silthfire]

i dunno where to ask this but

is the tv reponse time similar function to 100hz motion?....im very confuse on this coz i saw some TV did show their reponse time

[Bieffe]

hi, i tried, theres no option to change. for the tv model, yes, its supposed to be 100hz. any suggestions wat i can do from here? thanks alot.
Ya u are right abt this after turning on all that i know i still see the TV display @60Hz also.

[matrix_16]

is there any difference ???

the sales told me not much difference on the 32" lcd

cause i saw sony selling v5500 and w5500 the spec difference is only the 50 hz thing

[petetherock]

is there any difference ???

the sales told me not much difference on the 32" lcd

cause i saw sony selling v5500 and w5500 the spec difference is only the 50 hz thing

I suggest you use your eyes to judge, esp for fasting moving objects...

And have a look at the first few posts of this thread for some info.

Cheers

[matrix_16]

I suggest you use your eyes to judge, esp for fasting moving objects...

And have a look at the first few posts of this thread for some info.

Cheers

erm i did but cannot tell haha
onyl saw the samsung demo set on 50 100 - 200

200hz can see moving object sharper D

[arcaninx]

I went to Audi House today to take a look at LG 37LH50. A sales person attend to me and started to comment on the cons of the LCD. The most impt thing he mentioned is that LG's TruMotion 200Hz is not "real" as LCD panel is unable to take that "kind"of speed. Thus, he starts to recommend me a Panny 37" with 100hz that costs a whopping 1.7k.

I wonder that statement is correct.

[soulblader_86]

I went to Audi House today to take a look at LG 37LH50. A sales person attend to me and started to comment on the cons of the LCD. The most impt thing he mentioned is that LG's TruMotion 200Hz is not "real" as LCD panel is unable to take that "kind"of speed. Thus, he starts to recommend me a Panny 37" with 100hz that costs a whopping 1.7k.

I wonder that statement is correct.

He talk cock one...where got such thing???

audi house? I know where to avoid liao....:s7: