Input lag wars!, post your input lag results of your LCD display here for reference - Page 121

I own the 42" LK450 and i owned the previous LD450, and they perform identicle regading input lag and both sets
are basically a gamers dream. Through component in 480p i'm betting it's 16ms, however on the PS3 via HDMI in 1080p
it feels like the input lag doubles...Component may yield different results however, but i've tested component out on my PS3 with this particular set.

The problem is, the LK450 never went past 46" and the black levels on this set are pretty mediocre...
Brightness is ridiculously amazing and the color gamut/advanced controls are absolutely fantastic. The LK450 doesn't do so well with 'darker'
games considering the black levels are less than ideal....This set just meshes better with games that are super bright and colorful
like Super Mario Galaxy, Kirby's Epic Yarn, Zelda:Skyward Sword rather than Resident Evil 4, Bioshock and what have you.

I'm guessing there are no 50" 60hz 2012 LCD's that do below 20ms this year? I can't take this input lag epidemic anymore. XP
For us gamers, it completey botches and narrows down our HDTV choice to like 5% of what's currently 'new' and out there. Sometimes i feel like throwing in the towel
and going back to a 32" Full screen tube SDTV. But then i'd be absolutely missing out on the Wii U's 720p, hdmi and true widescreen + the big screen...

Anyways, if you don't mind ho-hum black levels than i'd recommend seeking down a 46" LK450. Keep in mind Component may perform better than
HDMI on the PS3, as it did on the Wii. I did comparisons between Mega Man 9 on both consoles, and the Wii version performed better

I have the 42" LK450 with the S-IPS panel. There is no 46" LK450 but there is a 47" LK520 (120Hz version of LK450). Of course, it's discontinued now and the 120Hz may actually add input lag (even when Trumotion is off). The 42" size is pretty good for my small to medium-sized bedroom it's in, though I might be able to fit a 47" in there (just barely). I like the black levels on sets like last year's Samsung D550 or D630, but that brand is known for the worst input lag of any brand when not in game mode and I frankly don't like using any picture mode other than Movie on that brand, as only Movie supports a fully calibrated picture. AFAIK, using the game picture mode on the LG's doesn't affect input lag and so I can use the ISF Expert 1/2 modes instead (which allow a fully calibrated picture).

Which panel type do you have on your LK450? VA or IPS?

I've got a VA panel which i guess means crappier viewing angles but superior black levels to the ISP panel?
But ya, the thing is i'm trying to gear up for the launch of the Wii U in November and i'm having a real tough time weather
i want to get a 50" plasma or a 50/51" LCD. The Auto dimming on any plasma when gaming is the deal breaker for me unless you can some
how manage to turn it off in the service menu, while the motion smearing for LCD/LED is the other deal breaker depending
on the videogame genre. I think playing first or 3rd person based titles on an LCD/LED because of the motion makes for one
lousy experience. Platformers and sidescrollers aren't too bad. XP

But anyways, I've gotten into the service menu on my Panasonic X5 plasma but i don't know if you can
turn off the auto dimming on there unless it's coded differently and i have no idea what to look for. plus it seems this years Panasonic UT50 has even worse input lag than last years model...
This entire input lag ordeal to me as a gamer is just BS. timing is everything, and if hampered the gameplay experience isn't true to what it's supposed to be nor is it as fun, satisfying
or intuitive to play and this goes for motion/pointer controls especially...16ms-20ms is what i'll put up with and that's that. Nothing
more.

And it has to be in the 50" range, i don't want to go any smaller for the Wii U or for film in general.
A lag destroying device seriously needs to happen, i know these VP's help tremedously by lower input lag with Analog/SD signals but what does that matter
since i play my old school consoles on a smaller tube TV anyways. Ever since i jumped into the HDTV gaming world i've had nothing but
problems, dealing with the trade offs for both plasma & LCD after being used to watching movies and gaming on my lag free Sony Wega CRT.
And it's funny, i too notice no difference between game mode and 'expert' mode on the LG when gaming. The expert mode can deliver one
brilliant looking picture....Plus the sharpness controls make the picture look better in comparison to the rougher look the other standard
modes dish out.

I seriously wish Super OLED displays were available....Seems like the perfect tech. Amazing black levels, the brightness, pure whites and
clean image of an LCD, no glare, virtually no motion blur, and i'm assuming no auto dimming either.$8000 for the 55" Samsung and LG
when they're lauched towards the end of the year. Ya....A little too rich for my blood. XP

Testing Methodology

I am an AV professional working in the performing arts and presentation markets. I have musical applications where low input lag is absolutely critical, and for these functions we are still using CRT's, since I have yet to find an LCD which is fast enough, that is, under one frame at 30fps.

I do my own input lag testing and some of the results have been shocking. I want to make a few comments about input lag testing.

First of all, my testing apparatus uses an oscilloscope for a source image. I capture this image using an analog video camera, and send it to the display being tested, either in composite or component format. The reason for this is that using a digital video camera, you lose a frame in latency, just digitizing the image. I want to test the display, so the signal is analog. If the display is digital input only, I will use a digital camera, knowing that at least 16ms delay is built into the camera. Every time you do a format conversion in the digital domain, you risk losing a frame. The same is true with reclocking.

I want to dispel the notion that CRT's have no input lag. This is only partially true. Due to the time it takes to generate an interlaced image, the visual lag from a CRT is *variable* between zero and 33ms, depending on what part of the image is being drawn at any given time. If you photograph the scope trace on the CRT with a fast enough DSLR, you will see the trace being drawn. This takes time. At 30fps, one interlaced field takes 16.7ms to trace, and a full frame is 33ms. What this means is that any input lag measurement against a CRT has a built in error factor of up to 33ms. Therefore, in my opinion, all of the measurements taken at some otherwise excellent review sites are questionable, because they use a CRT as a baseline. CRT's have fast throughput, but slow trace times (33ms/frame), compared to the very fast screen refresh rates of progressive digital displays (2-5ms).

To get an accurate lag measurement, there are two methods better than this. One is the version that I use, taking a high-speed photo of the scope and the display at the same time, then analyzing the photo to calculate the delay. One such photo can be seen here:



The other method, most useful in auditioning digital displays, is the photocell method, as used in the device being developed by Leo Bodnar. In this method, the source is a burst of white signal, and a counter runs until the white signal is detected by a photocell at the display. In my shop, we are also developing such a device, using Arduino parts, but we will not be bringing it to market. I wish Leo Bodnar the best of luck in marketing his device, as it will be invaluable to those of us who go shopping in the retail stores for new displays. Plug it in, press the button, get an answer. Turn on Game Mode, try again.

SMTT is a good tool, but there is no guarantee of accuracy, between unknown hardware and software interactions, and the inherent inaccuracy of the CRT trace. However, the photo part of the measurement process is sound, provided the exposure time is sufficiently short. The article at PRAD explains this well.

So, in summary, don't believe everything you read, and do ask about testing methodology before you assume that the numbers are trustworthy.

Happy hunting.

Speaking of which, do you have any idea how long it will be before he actually DOES bring it to market, and why he's not answering any emails about it? Also, how did you discover what type of design he's using?

I also have a question regarding some of what you described about input lag testing. You're speaking of testing the time it takes to draw an entire scope image on another screen. Isn't that a bit different than the amount of time it would take for a control device (mouse, gamepad, steering wheel) to manipulate an already rendered image?
Edited by Hi Def Fan - 7/26/12 at 1:08pm

I recognized Bodnar's design because it is essentially the same as one we're working on. Simple, and clever. On his web page, he gives enough of a description. I have no idea when the device will be ready to ship.

As for the CRT image, it is an old technology. The ray trace takes time to draw the image line by line, so unless you are using high speed photography (or another scope), you never know where you are in the frame. This is only a problem in the lab. Your eye is not fast enough to notice. Hence one frame is "fast enough," and always has been, until you are trying to actually measure it.

For modern, progressive scan digital displays, the entire frame is refreshed very quickly, and all at once. The refresh rate is much faster than the processing time. So we are worried about the time it takes from your (reactionary) input until that input is registered on the screen. During that time, the screen has been refreshed several times. If it is a fast moving game, the game is moving along during that lag time, and you are behind the action. Network delays and input processing to your console also play a part here.

My application is not about gaming at all. I work for an opera company. I have a conductor in the orchestra pit. He is waving a baton, and making all sorts of gestures to the orchestra. There are singers on stage, and backstage, and technicians all over the place. They need to see a video image of the conductor in *real time* in order to perform their actions in sync to the orchestra. I need that video image to be within one frame of real time, and I need to distribute that image all over the place. So far, only CRT has passed the test, but it is increasingly difficult to find large format CRT's, and besides, they are heavy, and they don't look good. If I can find a true "one frame" flat panel, I will be buying many of them. As products cycle so fast, I will be having to test each new generation of panels, since of course the manufacturers aren't talking. Panasonic is about the most up front, but they still won't give numbers. The PRAD article helps explain why; the error factors are significant, and there is no standard for measurement.

Another big application that is, pardon the pun, lagging behind, is medical imaging. There are many surgeries being performed each day, magnified on flat panel displays, and many of those displays lag by as much as 100ms. Think about that for a minute.

This is a great thread. I'm glad I stumbled on it.

I have some input lag news. :-)

I tried out the Panasonic P65VT50 and Sharp 80LE64 today at a retailer, and I brought my Wii with me to test the input lag of both TVs. I won't bring you any numbers, I'll bring you my experience instead:

For input lag test, I played Punch-Out!! (Virtual Console game for Wii) and Sin and Punishment: Successor of the Skies (Wii game). I used the official Nintendo component cable.

Reason for Punch-Out!!: This game tests your reflexes better than any other title. When you're fighting against the last two opponents, Super Macho Man and Mr. Dream, you reaction speed must be on top, otherwise you'll get hit. So with other words, if there was lag, I wouldn't be able to beat them. I didn't beat Mr. Dream (but that was because my lack of skill... I DID manage to avoid his crazy punches several times), but there was no noticable lag on any of these two models! Sure, they might have lag on paper, but in reality? No. I currently play on a CRT TV (since I have a Wii) so I know what a lag free feeling is, too.

Reason for Sin and Punishment: This game runs at 60 frames per second and is a very fast shooting game. You aim with the Wii Remote pointer=motion control. Again, no noticable input lag at all! The aiming thing reacts just as quickly as it does on my CRT TV. I even closed one eye, put the Wii Remote very close to my other eye and compared my movements with what happened on the TV screens. There is an extremely slight delay here, but that's because of the Wii - not the TV. That tiny little delay exists on my CRT TV, too.

However, it should be noted that I turned off all filters on both TVs while I tried this out. The Sharp, with filters turned on, had HORRIBLE input lag - clearly noticable even in slow titles. But with game mode turned on, that lag was no more. :-) Game mode on/off was really like day/night when it comes to input lag on the 80LE64.

As you understand, I only tested SD signals, and no HD gaming. But what could the difference be between SD and HD as long as all filters are turned off? If anything, the TV has the scale the SD signal in order to show it, since it's not a native resolution for the TV.

While the Sharp TV indeed was huge (playing Sin and Punishment and F-Zero GX on that TV was a "WOW" experience), my personal opinion was that the P65VT50 had better colors and better contrast. I tried to mess with the settings on the Sharp (even the advanced ones), but it never reach quite the highs of the VT50. The Sharp wasn't bad by any means, but the VT50 was closer to my current CRT screen (which is a good thing). Of course, SD materials gets pixelated when blown up to that size, but it honestly still looked good. The only thing that really looked bad (on both TVs) were the 2D icons in F-Zero GX - those looked like, literally, a pixelated mess. But once the race was on, everything looked great. I even tried Mega Man 3 via Wii and it looked incredibly clean and nice on both TVs. Tried to jump a lot in that game too, to search for input lag (since Mega Man 3 is famous for its extremely responsive controls). No lag detected on any of the TVs.

For me, it's like this:

Sharp 80LE64
+ No noticable input lag in game mode
+ HUGE screen!
- Slightly washed out colors and not quite as good contrast as the Panasonic

Panasonic P65VT50
+ No noticable input lag with all filters turned off
+ Extremely good PQ (SD signals)
- Smaller screen than the Sharp (but still big of course)

I see, so the orchestra itself looks at the baton, but those whom can't be in the pit need the video screens. Interesting, I can see how that would be more complicated than some might think, esp with all the inconsistency and lack of info on input lag.

Right. In my world, 16ms is excellent, 33 is OK, 50 is poor, and 100ms means I'm fired.
That's total system latency, from camera to display.

The search goes on...

Yeah my Panny TC-L32U3 is about 23ms I think. The lag level has been plenty acceptable and pretty much unnoticeable. Having come from CRT though, LCD in general is not exactly better overall. The subtle blur and ghosting at times, along with the need to use Vsync more often to avoid screen tear is less than desirable. It's why I opted for a fairly cheap one. I couldn't see spending much more than $300 with LCD having so many flaws. I'm hoping better tech will replace LCD and plasma soon. Color filtered OLED, or better yet, straight PLED.

Seriously you guys is there 2012 plasma or led that is good for cod, I used to have an ex500 and that was good enough. Any 2012 models for around 1200-1500 dollar range

I had a 40" Samsung D550 for about a month before returning it, and the input lag was comparable to the ips panel 42" LG LK450 I have now and have been using since January 2012. I returned the D550 because I couldn't quite get the colors right, and I think the pixels were larger or something bec/ in-game (xbox 360) jagged edges on everything were more pronounced and harsh on the eyes. Lackluster black levels on the lk450 have definitely been somewhat intrusive in some of the films I've watched, where dark scenes look washed out and lacking in details. Although after calibrating it for the first time and then watching Dark Knight, I don't recall being distracted like I was pre-calibration. But I think the vibrant and accurate colors right out of the box make up for its wanting black reproduction.

How are the st50 input lag. Are thee any other 2012 tv to get with decent to good input lag

Hello everyone! First of all, big thanks for this thread!

I'm not nearly as experienced in this stuff as you guys, but I tried to do some testing of my own, and I was hoping that I could get some feedback on my results?

I have a new VE247H that I want to test. Unfortunately, I do not have access to a 1080P CRT monitor to test against, but I *do* have a VH236H (EVO monitor) to use as a benchmark. This monitor is widely accepted to have less than a frame of input lag amongst the fighting game community (8.3ms I believe?)

Here are my settings:

VGA TEST
Inputlag Stopwatch
PC output to single VGA on ATI HD 4700
VGA splitter is a powered Monoprice VAS-814PF
Monitors are VE247H (left) and VH236H EVO monitor (right)
Both monitors set to game mode
Camera is Canon SD1000 set to 1600 ISO (set to take 10 shots by itself)
Pictures can be found here: http://s1145.photobucket.com/albums/o511/Nos999/VE247H_vs_VH236H_VGA_TESTING/

RESULTS: They appear to be virtually identical.

HDMI TEST
Inputlag Stopwatch
PC output via HDMI x2 (2 output ports) on ATI HD 4700
Monitors are VE247H (left) and VH236H EVO monitor (right)
Both monitors set to game mode
Camera is Canon SD1000 set to 1600 ISO (set to take 10 shots by itself)
After first 10 shots, HDMI cables were reversed on Video Card (output to different monitor)
Pictures can be found here: http://s1145.photobucket.com/albums/o511/Nos999/VE247H_vs_VH236H_HDMI_TESTING/

Results: Similar, but different? I'm not sure if the different output ports are skewing my results? A lot of the images are identical, but in a few, both monitors appear to be faster? I'm not too sure what's going on here.

Any help in interpreting these results would be greatly appreciated! If you guys also see anything amiss with my testing methods, please let me know!

Thanks!

Hello All,

I tried to read through most of this thread but became dizzy with knowledge and am looking for a shortcut to my answers. Has anyone tested the Sharp LC-70LE735U for input lag ?? I'm looking, as most are, for a large screen (60" +) for gaming only. I use the Xbox360 and only play FPS, mainly BF3 and would like to play on something fairly large for the realism effect. Cost is not so much a concern but I'm not looking to max out the cc either. I currently play on a Sony Plasma TH-50PHD7UY and although it still has a quality picture, I cannot connect via HDMI so I feel I am missing some potential clarity. Additionally, I purchased this unit new in 11/04 for $4,600.00 !!! I can hardly believe how far and cost effective these TV's have become since then. I also have a Saumsung PN58B550T2FXZA thats only a couple years old and thought I might use it for the gaming TV but I don't think it will be any better than my Sony other than the fact I would be able to connect via an HDMI. I'm not too concerned about speaker quality as well since I use a Turtle Beach wireless headset. If anyone knows of the input lag of my currently owned units that might help me understand why I'm getting my A** handed to me in most my game sessions or it may be that I'm just and old man with poor reaction time, hoping for the former and being able to blame all on the TV. Any guidance or help would be greatly appreciated as I am ready to buy and excited at the prospect that I may go 45-10 in a match one day instead of the reverse.

Thank you,

Jim

One thing, the bigger you get the worse your xbox 360 games are going to look......input lag times on big sets isn't that well known. I just trialed a 42" LG passive 3D with the thin bezel...good set, bad size for me, need a 37.....too bad they dont make one :P

I have a Sharp LC- 80LE632U and just started playing MW3 using the PS3. I have it set to Game Mode.

By no means am a good player but I can't be this bad. Seems when the guy comes around the corner and I start shooting, he shoots twice and I'm dead. Watching the kill cam shows him coming into view and me not even fire then I'm dead.

Is this TV giving me some serious lag or is the Kill Cam not an accurate interpretation? Any tests that I have missed for this TV?

MW3 can be a major lag fest. Not a good representation of a tvs lag levels. Try Super Mario Bros 1 on the Wii virtual console if you want a better live video game test.

I'm testing the input lag of the Dell e228fwpc monitor wich I guess is the same as the e228fwp and so far it seems like is sub 1f based on the SMTT 2.0 test. I do have one question for those that know about it:

My PC only has DVI and HDMI outputs, I'm connecting my CRT monitor using a DVI to VGA conector and the Dell monitor directly over DVI. Does it affect in any way the results?

Hi GambitK,

I'd like to answer your question. You are doing it right!

The DVI-connector of your graphics card is an DVI-I connector to be a little bit more precise. The -I in DVI-I stands for "integrated". That means that there are dedicated pins for the analog signal beside the pure digital pins. There should be no real signal conversion that add any latencies it's just a connector with another shape.

For details about the DVI-I connector: http://en.wikipedia.org/wiki/File:DVI_pinout.svg


DVI to HDMI: In fact both ports use almost identical signals: 8b/10b TMDS coded signals. So the connector is also passive, does not do any signal conversion and just changes the shape of the plug. There should be no additional latency.

Kind regards,
Thomas

---

To get SMTT 2.0 for your own monitor input lag tests visit: http://smtt.thomasthiemann.com

Even all TFTs refresh their display content pixel by pixel, line by line. They do *not* refresh all pixels at once as the wiring does not allow it!
All Pixels (or to be more precise: Subpixels) are wired in a matrix-style and can't be processed all at once.

You can test that yourself with a high-speed photograph of a flickering image or even with SMTT (2.0).
The visible "fade in" and "fade out" of the text ist directly related to the time that has passed since the screen content at that very position started to switch.
If the whole screen would be updated at once the brightness off all numbers (at least of all within a column) would be identically. But they change line by line from top to bottom while SMTT draws them always with the same intensity.



At least there are many factors that may lead to horrible measurements. That is absolutely correct. Even though SMTT is not perfect it omits most of these problems.

Interlaced pictures are pretty uncommon in any PC-related scenarios.
You are true that this is different for Video- or TV-related applications. Nevertheless consoles (like the PS3) offer 1080p output signals that are progressive. Interlaced signals are *of course* not suitable for input-lag tests as any full frame will need 33ms to be transmitted to the monitor.
Well, some high-end TVs use all half-frames, store one or maybe even two in a buffer and calculate progressive full-screen images at higher framerates from all the data they can get out of these interlaced images.
But that's not CRT-related: Neither this high-end processing nor the additional delay caused by interlaced signaling. That's an additional problem caused by the signal itself! So please don't blame CRTs for it. I measured input lag on CRTs with progressive signals as I wanted to get a prove for the assumption that they have no input lag.
My measurement showed about 670 ns "input lag" for the CRT - which might also be a combination of "signal travelling time withing the monitor" + "electron flight time to the phosphor" + "phosphor latency until a difference in illumination can be recognized" + "delay caused by the photo sensor".
Nevertheless: 0,00067 ms is that low that it does not matter at all.
Measurements and calculation of this value can be found at page 13 and 14 in this article at PRAD: http://www.prad.de/en/monitore/specials/inputlag/inputlag-part13.html
One of the included oscilloscope based measurements (V-Sync vs output on screen) From this value the v-sync to first pixel has been substracted:
As you can see in these screenshots the errors of the measurements are extremely low. 122 picoseconds (!) for the second, 40ns for the first. These measurements are *very* precise.

BUT you have to consider that a single stop watch anywhere on the screen will not be updated as fast as the very first pixel! Forscience is absolutely correct, that something at the lower right hand corner will be updated about 16ms later than the first pixel.
So whenever you take pictures with long aperture time that do not even show the CRT-update process, you won't be able to tell which part of the screen has been updated and which has not.
But that's pretty good covered by SMTT even in the first revision - and better in SMTT 2.0. It's just important that you use it as described in the manual: Use fast shutter speeds and use only the values that are the newest displayed on the screen.
In this very special case you will get numbers that have just been written on an updated area. Maybe 1ms ago, but there will be neither a 16ms nor a 5ms error. It will be pretty correct - at least for progressive sources like PCs, consoles, 1080p movies, etc.
Yes this will be quite handy and effective. I really like the idea and device. But it will also be more expensive due to the hardware.
The CRT-Trace is covered and does not harm the result of SMTT.

Sorry for the double-posting, but I preferred to answer to this member in great detail with a dedicated posting.

ThomasSMTT, welcome to the forum, your knowledge will be invaluable.

MW3 has to be the most crisp and fast game when it comes to input lag. The issue where ur killcam is different then what you did is from the game engine not input lag.

Hi all, I recently got the Sony 32EX340 (720P) and did an input lag test using the stopwatch method. I took a video and stopped it during various time over one minute. I have a macbook (Aluminum 2008 model) and used a mini-display to hdmi cable (Not HDMI adapter with a cable) It's outputting to 1360 x 768 at 60hz, Scene: Game.
Inpput lags varies from 0 to 30ms tops. Never goes past 30 ms. Some instances it was 0 , other 16ms, highest was 30ms. I play COD black ops (PS3) and I can do pretty good in it, as lag is not bad at all. Color is very good and sound is very loud for a bedroom, I would say plenty loud. On a darkened room, flashlighting is minimal. I don't see motion blur or ghosting, or color trailing. All in all, pretty good TV for $400 and lag is low, believe me, I am very sensitive to lag. I used to own a Sharp LC-40LE830U and had to sell it because I was getting murdered in black ops. Not with this one. Anyways, please feel free to comment and ask any questions on this TV if you are interested.
Edited by Maverickaim9 - 8/28/12 at 2:56pm

That's quiet usual for the plain stopwatch method.

If you are interested in the details why the results vary from 0 ms to 30 ms (are there no 32ms results?) you can find some answers in my article. Start reading at the end of page 8 (page 9 and 10 deal with this topic as well).

Direct link: http://www.prad.de/en/monitore/specials/inputlag/inputlag-part8.html#Results

(Please note that all pictures within this article are showing the "old" SMTT, not SMTT 2.0.)

That looks like a commercial for this elderly article but I am just to lazy to repeat everything that has already been written there.

Hi everyone!

I figured the regulars of this thread would be pretty savvy when it comes to TV input lag and all, so I was wondering if I could ask for a quick recommendation.

I'm looking to replace my Samsung 46LC630 for something bigger. The TV still looks beautiful and all, it's just that I'm sitting about 9 feet away from the TV now and would prefer something a bit more immersive.

I play console games quite a bit. Mostly RPGs and action games, but input lag remains a priority whenever I have friends over to play fighters/FPS games. I watch many blu-ray movies and watch 1080i television daily.

I'd prefer LED-LCD, but Plasma isn't totally ruled out. The thing is, is that I also have a PC hooked up to this system, and god forbid I leave the desktop on mistakenly, I'd rather not pay for it with the television's quality(IR and Burn-in). I tend to lean towards Samsungs and Toshibas, but will investigate other options. I only need one HDMI input, so that's not a concern. I'm also not concerned with internet features, wifi etc, as I have an HTPC.

Any ideas?

I wish I could measure my SHarp Elite 70" in Game mode... no one seems to have tried.

Compared wth my Mits 2008 DLP, I feel no difference with high end BF3 PC (dx11) or other twitch sensitve games (platofors etc).

I just looks really pretty now

I wish I had a copy of rockbankd to do the measurements. But, IMHO, for most people who are even pretty good (I am level 35 in BF3 /50) the lag from Comcast probably matters more

Why dont you hook the sharp elite to a pc and try to do an input lag test with the input lag test software from flatpanelshd?:

http://tft.vanity.dk/

It's a flash based stopwatch...
He would be far better of with a more precise tool OR: Just don't test it at all before you get wrong measurements and blame the monitor for it.
Sometimes benchmarks may make it worse than it actually is. If you are satisfied: Stay satisfied.

I would love to refer to your tool Thomas, but you see it is not free and that makes it simply a bridge too far for most people who are nice enough to want to post the results of their -one time only- input lag test.