Not a gamer myself, I wonder how a delay as low as 60ms is perceivable while playing..
Okay here is how an input lag is perceivable to the human eye, i am not talking about the magnitude of it, like how much people can see, first of all i have to state here that CRT's have negligible input lag and most of my gaming prior to this i have done on a CRT, also i am only talking from my experience playing these games on the new HDTV's, i am taking the example of street fighter 4, now when u try and hit those combos u have to hit quite a number of buttons at the same moment or one after the other in order to trigger that particular move or combo hit, now that is when the dreaded input lag plays havoc with your timing, eventually you might get used to it since it is human nature to adjust itself to it's surroundings, but for first timers you won't be able to hit those combos which u were able to hit very easily before, the reason for this is because that ms of input lag between each button press keep on adding itself with every consequent button that has to be pressed in order to be completed (now u might ask how they add up, here is the explanation, from the point of the player hitting the button and the same effect taking place on screen is the input lag and then again the time that takes for you to analyze the effect that has happened and your brain reacting to it by pressing the next button we forget to take that into account, that is how it adds up itself for every other button, that is why the level of input lag is different from person to person, those who have played games for quite sometime have in return sharpened one's nervous system, that is what is termed as a person's skill and why some are better at playing games than others, because their body have adapted by making itself quicker and sharper, and similar thing will happen when u keep on playing with this input lag that your body will adapt to it where the input lag is not too much, but that is a subject of another discussion, but for a layman one can understand why first time gamers fail miserably when trying a new game, but when they keep on playing for some time they master the same game at which they sucked at first), now it is the same reason why some reviewers say that an input lag of more than a certain limit is not good for fast paced games, now what happens in fast paced shooting games is that you have more than one enemy on screen and that again results in aiming and shooting at them very quickly those small delays again get added up and screw up your timing
Now that is why i said that the LG set is not suitable for hardcore gamers, and i specially added hardcore gamers in that sentence, because for a casual gamer these differences won't be perceptible, it is the same concept that why people who review the sets extensively can make out the difference between the different levels of color reproduction, whereas a person who rarely deals with them will be wowed after seeing any plasma display, i am sure u can relate to this, i added the review of teazle from bluray forum and quoted from his review for this sole purpose only, because what he has written is from a hardcore gamer perspective, I never said that this display will be useless for gaming, but if one was to read my previous post i have clearly mentioned that for a casual gamer this set will do the job, but for a person who is buying an HDTV just for sole gaming purposes or for that matter their usage might be above 80% in the games department, for that purpose this set would be disappointing, and i am not trying to put any brand down, i am just stating from my experience of which i had while i demoed the set this past Sunday.
In addition u can read from wikipedia about this
http://en.wikipedia.org/wiki/Input_lag
I am quoting from the above link the reason why i have posted such a detailed explanation because input lag is felt and is very hard to see, because it depends from person to person on his or her skill/level/ability
Testing for input lag
Input lag is easier felt than seen. As such, proving the existence of this phenomenon requires these things: a test display (the display being measured), a control display (usually a CRT) that would ideally have no input lag, a computer capable of mirroring output to two displays, stopwatch software, and a high-speed camera pointed at the two displays running the stopwatch program. The lag time is measured by taking a photograph of the displays running the stopwatch software, then subtracting the two times on the displays in the photograph. This method only measures the difference in input lag between two displays and cannot determine the absolute input lag of a single display
Here are some videos that might be helpful
http://www.youtube.com/watch?v=Of3GKgPLRnM
http://www.youtube.com/watch?v=lSW94blyA5Y
If u can forward the video to 1 minute on the time line u will see what difference it really makes, the input lag is ~46 ms (about 3 frames delay) and way lower than the value of 68ms as said by you, now there is no fast paced action going on and still there is a definite input lag, so one can well imagine what it will be like while playing games or when the action is very fast.
But again u have to remember it depends from person to person and how their bodies have accustomed themselves to the surroundings or the kind of activities they indulge in, it is for the same precise reason people who play games develop a better reflex system, because their nervous system gets accustomed to faster reflexes and actions, and basically that is what define skills of a person in a particular activity, the more a person does an activity the more skillful he becomes in doing it, like u are considered by some a very knowledgeable person in displays, now u have acquired that over time, and it didn't just drop into your head like the matrix, so if u are not very fond of games there is a little possibility u will be able to detect the input lag, but if u have been playing games extensively and that too on a CRT monitor which has a negligible input lag then input lag will not be such a big thing to detect even with one's own senses.
Thanks !!
