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To disable CE-Dimming/Auto Dimming on the 2012 ESxxxx series sets:
Auto dimming works by dimming the screen when a certain low brightness level is reached. By raising the brightness enough, that can assure that the tv never reaches that low brightness level. Of course that means raising the tv brighter than you should, resulting in an overly-bright and washed-out image. You can compensate for that however by making a simple adjustment in the white balance menu. Basically, you're cranking up the brightness a bit at the beginning of the processing chain, where CE-Dimming is involved, and then compensating for the brightness later in the processing chain in the white balance, once CE-Dimming has looked at the image and decided not to auto-dim due to the extra brightness. It's just a simple trick, but it works really well.
- turn your brightness up to 53
- In your white balance menu, set the following:
R-Offset - 12
G-Offset - 12
B-Offset - 12
R-Gain - 25 (default)
G-Gain - 25 (default)
B-Gain - 25 (default)
Keep gamma on 0
That's it! CE-Dimming is now reduced to the point where it should not bother you. There is only the slightest hint of CE-Dimming remaining. And Micro-Dimming still appears to be working. This can be applied to Standard, Natural, and Vivid modes. CE-Dimming does not affect Movie/CAL modes like the other modes.