The New Definitive HDTV Lag FAQ

Should be 1920x1080 @ 60Hz. In my experience TVs are more limited than computer monitors when it comes to allowed input frequency. Check your manual and see if you can find a list of supported frequencies for the VGA port. If Windows default 1080p@60Hz isn’t working, you might be able to use something like Powerstrip to lock in the exact frequencies.

What’s up guys ? Sorry for the noobness here, but here it goes. Do those commercial TVs still use postprocessing ? Also, how do they compare to old school SD ?

Thank you.

  1. Yes.
  2. Different TVs compare differently to different older TVs. You’re assuming that all HDTVs and all SDTVs lag the same amount. They don’t, making this question impossible to answer.

Do PC monitors have post-processing lag?

http://www.macmall.com/macmall/shop/detail.asp?Redir=1&description=Westinghouse-42"+1080p+LCD+HDTV+with+Built-In+ATSC%2FNTSC%2FQAM+Tuner+-+Refurbished-Video&store=macmall&dpno=7758710&source=ZWB11939&srccode=cii_13736960&cpncode=20-10781134-2&adcampaign=email,ZWB11939&wt.mc_id=ZWB11939

6.5 ms response time. Is this pretty good?

It’s a great deal in all other respects.

I don’t know if it’s post processing or not, but judging from this comparison there are several LCD monitors that do indeed lag. BenQ seems to be your best bet if you want a lag-free monitor.

This needs to be repeated (and if poonage is still editing this FAQ, put in the first post): RESPONSE TIME HAS NOTHING TO DO WITH LAG. You still have to run tests and check for lag yourself.

Cool.

What about most SDTVs that you can find for sale now. How do they compare to the fastest HDTVs on the market now ? Any clue ?

If it’s not a TN panel LCD, then there will be lag.

Speaking of PC monitors, I just got one of these a few days ago.

http://eshop.macsales.com/item/Dell/S2409W/

I highly recommend this monitor. The colors are vibrant, the difference between blacks and whites are great, the brightness is great and no lag (since it’s a TN panel). The monitor is 1920x1080 (1080p) and has a HDMI port, so it’s perfect for a PS3 and 360. I was messing around with it’s settings, and I like the factory ones the most.

I got mines from the websites I linked. Great site, it came with no dead pixels or any problems.

Why is the lag problem nhot on TNs as opposed to, let’s say, IPS?
Especially since the Sony W4000/W4500s TVs are PVAs/MVAs and are reported without such a problem. It also doesn’t make sense from a technical perspective, since most TNs themselves have to dither colours (6bit brings down the GtG-time). The only thing you have is a slightly worse response time, that’s all, the rest is electronics.

Speaking of which, I’m already curious for my KDL40W4000. I ran extensive test with my home monitor (LG L227WT, 0-10ms) and luckily, the scaler doesn’t cause any input lag, so I hope this holds up for the Sony-TV as well. I also have values for my reflex tests so the avlues will be comparative from playing. And some formal clone mode shots, of course. We’ll see :smile:

All TN panels are not lag free, though it’s probably safe to assume that most non TN LCD panels do. In your case with PS3 your panel will lag with SF4 because the game is 720p… not the same as your native res. If you played a game like SC4 which has your native res you’d notice less lag. This would actually happen with any panel, TN or not. From what I understand from this thread, 360 should actually fair better because scaling from the 360 tends to be faster than panel scaling.

edit: I see my assumptions in a couple of regards do not at all agree with kitsune’s results, so I’m not sure what to make of it. It’s true, the only way to be sure of something to with HDTVs is to test it. :confused:

I know people are saying that the RB tests are not reliable, but would they not at least be relative to each other? I guess I better start doing mulitple tests with it. I’m trying to sort out worthwhile TNs at console tournament we run, and doing the video camera/LCD test is far too much work.

What is the res for RB2? Should I get 2 monitors, one at 720p, another 1080p? There must be a light at the end of the tunnel.

RB2 is 720p on PS3, so it’s out for testing 1080p.

I don’t have any good answer for two monitors. I have been trying to find native 720p displays but they are not as common these days, and there is a bit of confusion over what constitutes a screen to be the native resolution. Native 720p is supposed to have a resolution of 1280x720, however I can’t find any monitors out there with that exact spec.
edit: Just to make things complicated, the vewlix display for Blazblue which is supposed to be ‘lagless’ has a resolution of 1360x768 (Source: http://forum.insomnia.ac/viewtopic.php?p=5633). I think this is the same as SF4. Are you as boggled as I am yet? :slight_smile:

I do suspect that there are similar resolution screens out there that don’t bother to scale, but I don’t know that I’m right. I’ve been told that 16:10 monitors just add black bars for PS3 without adjusting the screen size, but I haven’t tested it.

I’m not particularly technically minded, I’m just trying to get my head around this as much as anyone else in this thread, so please feel free to correct me. I feel like I’m working with a puzzle with most of the pieces missing on this issue, the information that’s available regarding this topic is minuscule and nearly everything is disputed.

Okay, I did the following thing: tested myself for 3 days with those:
http://www.bbc.co.uk/science/humanbody/sleep/sheep/reaction_version5.swf
http://www.fetchfido.co.uk/games/reaction/reaction_test.htm
Took down the values.

Tested again today with the W4000… same ones. And yeah, the sheep test is not very accurate, but the 2nd one is.
Also, a fiend was over and we played Tekken 5:DR and he also didn’t notice anything. And from my years of Tekken on tubes I hereby give the Sony KDL40W4000 my seal of approval. And the scaler didn’t do any noteable damage either. :tup:

P.S.: Model assembled in Spain, cloudfree sky… errrr, LCD

By the way, I’m mostly asking this because I might just get me a good SDTV for SF4 and other fighting games instead of HDTV / LCD PC monitor.

Any clue how most “new” SDTVs we can find now for sale compare to them in terms of lag ?

Let me add a curve ball into the mix. How about projectors? Ok, my TV’s natural res is 720p, but I found out my Sanyo Z4 is 1080i. Which is closer to T5DR’s 1080p.

Add an 80inch screen, HDMI, and it’s pretty impressive (can I share some pics?) Near the botton-right is PS3 for size comparison. Should’ve thought of this before.

I don’t know if there’s any postprocessing with the Sanyo Z4, but I was able to pull off Heihachi’s EWGF x3 combo. I need to research more on projectors and lag.

I just received my PS3 VGA cable (mayflash). Sadly my HDTV (Sony KDL-40S2000) through VGA input does not support any of the PS3’s TV resolutions. I really wish the ps3 would support PC resolutions as the 360 is capable through vga… And I can bet that won’t ever happen as Sony has no plans releasing an official vga cable so why would they support pc resolutions… fricken A!

i was wondering if i could get some help deciding on a new tv. the choices are a 42" 720p plasma LG(with a gaming mode, not sure on the ghz), and a 42" 1080p lcd magnavox(no gaming mode, and is 60ghz).
so my question is, which is better, plasma or lcd? and if lcd is better, is it so much better that no “gaming mode” and 60 ghz isnt relevent?
im not very HDTV savvy soo… any input is appreciated.

Edit: i scaned through all the thread pages but i dident see plasma tvs being touched on, so i assumed that lcds are superior. but ive heard plasma tvs have like “600 ghz” and “2ms refresh rates” vs “lcd’s 5ms”, is this true?

Read the first page regarding refresh rates. They are not relevant to this discussion, and really aren’t relevant at all at 5ms and below.

edit: Just checked the first post then. Brilliant OP.

so does that mean plasma tvs are good? cause i read the first post(for the third time) but like i said it does not touch on plasma tvs at all.

Well the Sanyo PLV-Z4 native res is 1280x720 Pixels, so I should be setting the PS3 to 720p. There are reports of poor de-interlacing with this model. There is no ‘game mode’, but ‘natural mode’ is the closest to no additives to the picture. I am pulling off Hei’s EWGF consistently which is a 2-frames window (60 frames a second) at 1080i, so not sure if I expect 720p to be noticably different. But will set to 720p for piece of mind :wink: