Originally Posted by Icon13
I would tend to disagree.
We just had this discussion a page or two back; the short answer is, I can virtually guarantee you two things:
1. When you're talking to a gamer about what input
lag is, they mean button press to on-screen action.
2. When you see a Bodnar LagTester measurement, you're also seeing button press to on-screen action - aka input
Now, I believe there are two legitimate camps here talking about two different measurements and using the same terminology, but I'm sticking to my guns on this. It's a term born of gaming demands, and we mean the SUM of all lags. If you want to say display
lag, OK. If you want to argue that the Bodnar LagTester measures this, I'll give you that latitude, as it probably is the closest thing you'll get to truly identifying the amount of lag you can blame on the set (though you're adding the device's lag to that measurement; since it's constant, that's still useful for comparison, but it's definitely added lag).
You can do your own research, and find the genesis of this discussion and how it plays now today. People talking about how games running at different frame rates affect the necessary amount of minimum lag and so on. Bodnar just simplified the measurement process with his device to give us a baseline that doesn't depend on the game or the system running it, so that we know exactly how much input lag is coming from the display, and can compare it easily. But it doesn't magically measure JUST the set's lag, because it adds its own.