Originally Posted by Ken Ross
To answer your question on the ramping of the backlight control, yes it does have a dramatic effect on the picture from the highest to the lowest levels much as it does in any traditional LCD I've ever owned. Where it doesn't have much of an impact is in it's effect on the pulsing issue.
I don't see much of a difference in minimum light levels in THX mode when you properly adjust say, the non-THX movie mode. At default levels perhaps (I don't recall), but not after adjustment.
As far as 8 bit vs 16 bit processing goes, it doesn't explain why, when the local dimming is turned off, the issue completely disappears regardless of picture mode. I'm sure the turning off of local dimming doesn't engage 16 bit processing. Otherwise I'd see validity in your theory.
At to differences in sensitivity explaining why I don't see it in THX mode and Airgas does, yes, that could certainly be. But even there it doesn't explain why Airgas is not at least seeing a lessening of the effect. Frankly I'm also surprised more people aren't reporting this, but it could go back to the 'sensitivity' issue.
At any rate I'm hoping that a software update can put this issue to rest.
I hope that a software update can solve this problem too, as I am interested in the set and would like to see how things play out.
To clarify, when I mentioned 8-bit vs. 16-bit I wasn't referring to picture processing, but to PWM dimming drivers (if they are used in the Elite), which I think could possibly not be functioning when local dimming is off. Think about it, with local dimming turned off the backlight is set at a fixed value and no additional dimming/brightening occurs so why would the drivers' processing be in use? When local dimming is turned on, however, real time, variable dimming is occurring and the drivers' processing would presumably be needed.
Ken have you and/or Airgass paused the affected content precisely when the perceived flickering/pulsing is occurring? If so, what happens in regards to the flicker/pulsing?
I'm not sure if this has already been checked but are you and/or Airgass able to see flicker with any static test patterns such as low APL pluge, high APL, average APL, greyscale ramps, chroma and luma burts, both full field and windowed grey scale and color patterns of different stimulus and color?