Originally Posted by nahtanoj
How does one perform a lag test, other than the haphazard method of playing games as I've done.
Also, as a phenomenon, if a TV has a lag of X, is the effect on every game and from every platform (Xbox360 vs. PS3 especially) identical, or are there other factors involved.
Let's say that you play 2 games back to back on the same system. One game requires very little time for the graphics processing to be received by the TV (I think lag is different than pixel redrawing, but correct me if I'm wrong), and the other games graphics require much more texture mapping, shadow detail, etc. Does that mean that X lag in game A will be the same as X lag in game B?
While that some games load more slowly on the platform itself challenging platform graphics hardware to a greater extent, would more complex information being fed to the TV when moving on screen or when shooting (the actions where lag is usually noticed) effect lag at all?
One reason that I'm asking is that I cannot create lag with the games I've tried regardless of the settings. I don't want to mistakenly conclude (and lead people to the conclusion) that therre's no lag if it is somewhat dependent on the complexity of the graphics processing or something else with the game).
Yes, lets say a TV has 30 milliseconds of input lag in game mode. This mean there will be a 30 millisecond delay on all all games. Basically your xbox/PS3 sends the video signal to the TV. Then TV takes that image and processes it to make it look better. This is where the lag comes from. The more your TV manipulates the image, the more lag is added. The reason game mode's degrade the image quality is because the TV is doing less image processing to reduce the lag. Some TVs do this better then others. Samsungs are notorious for not being good.
The Rock Band and Guitar Hero lag test are really not that accurate but better then nothing.http://www.flatpanelshd.com/focus.ph...&id=1229335064
If you wanted to accurately test the TV you would need a camera and a computer. The most accurate way to do this test is to use an old CRT monitor but I know most people dont have those laying around. I know I dont. You could just use a laptop and that would give people a great idea of what the input lag is.
So basically open this page on your web browser...http://tft.vanity.dk/inputlag.html
Then plug your computer into your TV. Clone your computer's image onto both your computer screen and your TV.
Now press play on that web page. Then get your camera and take a few pictures. Make sure you get both screens in the picture. Also put your shutter speed up on your camera if you can.
The pictures will probably show your computers Screen is ahead of the TV's. We just look at the numbers and this will give us a very good idea of what the tvs input lag is. Also don't forget to test it in game mode to get the lowest possible.