Originally Posted by Phantastica
There are basically two response rates that you can hit, 116ms and 16ms. 16 is great for gaming and 116 has a really noticeable lag.
However the labeling of the input on the input select screen makes a big difference. For any label other than PC, "Game" mode is the only picture setting that will let you hit 16ms. For inputs labelled "PC", you'll get 16ms all of the time, regardless of the Picture mode.
Here's the most surprising bit....on an input that isn't labeled "PC", you'll lose Local Dimming when in Game mode. The option will be greyed out and it will very clearly be disabled (hello flashlights). However, if you label that input as "PC", you'll have Local Dimming support even in game mode and still have a 16ms response rate.
HDMI Input 3:
Labeled as "Game" input or not labeled
Standard settings - 116ms
ISF Expert - 116ms
Game mode - 16ms
No local dimming available
HDMI Input 3:
Labeled as "PC" input
Standard settings - 16ms
Game settings - 16ms
ISF Expert - 16ms
Local dimming options available
Me and a buddy ran the same lag test as Phantastica on my friend's 47LM7600 and saw similar results :
Test setup:Macbook -> Displayport to HDMI adapter -> Philips HDMI cable -> 47 LM7600
We used this website for digital clock
Based on Phantastica's experiment, the camera was set to 1/60 shutter and we took pictures and saw the difference in the displayed time on macbook and on the TV
The TV already had the HDMI4 input changed to "PC" and Audio and Video mode to "Game" and we got 0ms lag
1: Label : PC / Picture Mode : Game / Audio Mode : Game = 0ms
2: Label : PC / Picture Mode : Standard
/ Audio Mode : Game = 33ms
3: Label : PC / Picture Mode : Cinema
/ Audio Mode : Game = 0ms
4: Label : PC / Picture Mode : Game / Audio Mode : Game = 0ms (Repeat of 1)
5: Label : GAME
/ Picture Mode : Game / Audio Mode : Game = 33ms
6: Label : AV RECEIVER
/ Picture Mode : Game / Audio Mode : Game = 34ms7: Label : PC / Picture Mode : Game / Audio Mode : Game = 0ms (Repeat of 1)
We don't know if this is the absolute best way to measure lag. But, we notice no lag while playing games online ... same with the LM7600 I have. I think LG has come through in a big way fixing lag issues. Since LG marketed dual-play for this years models, I think it forced them to fix the gaming lag issues first
If you want to see the pictures taken during the test, let me know. I can ask my buddy to send them to me.