nope, i didn’t feel like hooking up a crt, as i said it was a 19 inch lcd computer monitor with relatively low response time (4-8 ms? i’ll have to look it up). obviously your not going to get the same input lag with lcd as crt, though it could be close
Response time is not input lag time. And there’s nothing that really prevents you from getting the same input lag with LCD that you get with CRT except that it’s expensive. I mean, there do exist LCD monitors that test out as not being slower than CRTs. (AOC 416v, according to one of the various monitor shootouts.)
(I mean, you could imagine an LCD monitor that takes a VGA input, does an analog-to-digital conversion to figure out what pixel the VGA input stream is currently pointing at and do a pixel blit on that. However, the electronics to do that in a timely manner would be more complex and costly than collecting and processing an image the way it currently is done, more or less.)
there is a serious lack of people actually testing the tvs they own. i thought that was kind of the point of this whole thing.
It would also be nice to have a standardize test.
Which one is the definitive input lag test? so far we have the following…
LCD vs. CRT stopwatch test.
Might be the most accurate but also the most technical. Various factors such as setting, camera shutter speed, GPU port, etc… can alter result.
LCD vs. LCD stopwatch test
Not accurate at all unless the you know exactly what the input lag of the other monitor.
RB2 Automagic test
Well its automatic calibration test…but how accurate is it?
GH2 manual lag
Too much human error…
Dat 1 frame link combo!!
umm…yeah…
We need one standardize test to rule them all!!
i agree. i’m going to be looking for a larger computer monitor/HDTV in the very near future (something over 32"). right now the only one i see listed that’s been tested is poonage’s Viewsonic CD4620. granted, i’m skipping around the pages, but every page i’ve encountered so far has somebody talking about how low their response time is (who is quickly corrected by the next poster) and how well they can do combos. i look on other sites and see people saying stuff like “input lag doesn’t even exist, losers!” it’s very frustrating…
:mad:
well let’s see…
1 frame link: subjective
guitar hero: stupid
rb2: not accurate
lcd - lcd: too many variables
non hd crt - lcd: most accurate test we currently have
the test we should be using is very obvious, everyone is just too lazy to contribute. so far it’s 51 pages of almost nothing but bullshit “i don’t FEEEEL any lag on my tv” or the ever so popular “hay guuuys i want to buy THIS tv, does it lag?”
:lame:
I’ve asked stores around my area but none are interested, not even the RB2 test, which is just a quick hookup to my ps3.
I’d probably help if I was looking for one to buy. 
I totally agree with moocus…
and the thing is the OP(poonage) seem to have tested Viewsonic CD4620 “commercial” screen using the RB2 test…which I think is not accurate.
I have tested another “commercial” 42" screen/digital signage and even though the test was half ass and rushed (CRT vs LCD), it did have input lag on it…it was very obvious while playing too.
in the next couple weeks i want to test out sharp’s new led backlit tvs. i’ll lug my whole pc to frys if i have to. i’ll be testing vga and hdmi in 1080p and 720p.
sorry if i sounded angry, i’m just frustrated. i wish i could just take a laptop and test through s-video but we both know how inaccurate that could be.
UGH, gay ass lag and gay ass companies not advertising their lag and making piece of shit tvs with so much lag in the first place!
Some arcades have custom rig set ups due for not having a Japanese HD cabs.
How are the lag on those?
How about the ones that do have Japanese HD cabs? Did they seem lagless?
I was sick this week so I couldn’t test out my ultimate monitor :sad:
If you’re not testing against a CRT, you’re wasting your time.
Don’t go assuming common sense is actually common! :wgrin:
This is only obvious to those that of us that actually investigate the issue and read about it with critical thinking skills.
It was a nice starting point, but it desperately needs a way to sort results of ALL the monitors by lag.
They have a couple well reviewed monitors, but the ones I thought of buying were all not available from a site I’d care to buy from.
After finally finding a monitor that was supposedly very good by many sources AND actually available for purchase AND for only $200, I finally pounced on the Asus I posted the results for.
testing program
I guess there is a testing program you can get for free here http://smtt.thomasthiemann.com/index_en.html. It is suppose to eliminate the margin of error in the stop watch method but its all in German. Also i don’t know if it was meant for testing larger monitors. So If you can decipher it some how it might be helpful.
wasting my time? not really. I have an NEC 1970gx which has reasonably low input lag (after checking google). if fact i would say its hard to find a 19inch computer monitor which adds much post processing lag, though maybe there is the odd one. In any case this one doesn’t and it gives me something to go by. If they have the same delay, I know my hdtv, which typically add a punch of extra processing, doesn’t add any.
while its not as precise as a crt, it gives a decent estimate until there happens to be a crt in my living room (which will probably happen after christmas heh)
OK, so for those who are thinking taking the word of someone testing an LCD which we don’t know the input lag of against another LCD to determine the latter LCD’s input lag seems valid enough, I present the following argument/counterpoints to show that it is indeed a fallacy.
So you’re saying your monitor has a low input lag by basing it upon another monitor that has an input lag of “reasonably low”
That is neither accurate nor precise.
Have you read the first post of this thread? Allow me…
(although, technically, response time has LITTLE to do with lag. after all, a monitor with a 16ms response time cannot have 0ms input lag. Nonetheless, the point is a monitor can have a 2ms response time and yet still have a 60ms input lag so the general point is still valid)
That said, even if the processing of the monitor takes 0ms, the LCD panel of your monitor itself takes 8ms to react. 8ms is roughly half of 16.67ms which is the time of one frame.
So, your monitor is already behind by a half a frame without even adding in the processing time yet!
Interesting typo: “if fact”
While I didn’t find INPUT LAG information on a 19inch NEC, I did find lag information very quickly and easily on several other NEC LCD monitors. Why would your 19 inch monitor be necessarily immune to the same input lag related “flaws” that these other monitors have? And why test based on it unless you’d previously ruled out that your monitor is not affected?
Well, the NEC monitor on the right in the page I just liked to shows a input lag ranging from 10 to 50ms. That’s a variance of 40ms. Which is a variance of 2.4 frames on a 60hz monitor. Your monitor we don’t have data on so it could very well have the same variance. It a forum where we are sweating 1 or 2 frames of lag, you cannot correctly say that a monitor that might have a 2.4 frame variance “gives a decent estimate”
DVI-D Postprocessing?
Hello I wish to find out, if using the DVI-D Input from a Monitor will it possibility not have Postprocessing like the VGA Input? Because I want to use my existing HDMI Cable and get a HDMI Female to DVI-D Dual Link Male Adapter, is this possible?
Jesus Christ you fail on so many levels.
The thing is that not all TV disable post processing with VGA, so that’s probably the same with the DVI port. Best thing is to test it out yourself.