Auto-Dimming/CE Dimming

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Nitra
Posts: 1
Joined: Sun Jul 29, 2012 2:54 pm

Auto-Dimming/CE Dimming

Post by Nitra »

Has anyone managed to figure out how to disable this on the ES series yet?

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erdem_ua
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Joined: Thu Oct 01, 2009 6:02 am
Location: Istanbul, Turkey
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Re: Auto-Dimming/CE Dimming

Post by erdem_ua »

You can try to change source name to "PC" for HDMI inputs...
Unfortunately, this doesn't apply to TV source

prsut
Posts: 11
Joined: Tue Jul 17, 2012 7:38 am

Re: Auto-Dimming/CE Dimming

Post by prsut »

Use Film mode...

djstevie
Posts: 12
Joined: Fri Oct 26, 2012 5:15 pm

Re: Auto-Dimming/CE Dimming

Post by djstevie »

glewarne wrote: viewtopic.php?f=16&t=4353&start=30#p36262
Registered here to report my sucess on this!
I have a UK PS51E530 which does not have an ethernet support, or WiFi networking enabled
I've got the same model. Did you notice if there were any options to disable auto dimming? Im suffering from the famous auto dimming issue and its driving me nuts. Did the cinema smooth option make any difference in 24p mode?

prsut
Posts: 11
Joined: Tue Jul 17, 2012 7:38 am

Re: Auto-Dimming/CE Dimming

Post by prsut »

check my post here
prsut wrote:Hello all,
lot of us are out of color from AutoDimming ( CE Dimming) feature implemented in 2012 ES series of Samsung Smart TV. On german hififorum I found interesting information, how CE dimming works...
author is Dide? : (google translate)
------------------
"The automatic dimming takes effect if the average brightness value of the current image (or scene) is smaller than a certain limit. By raising the brightness (at the very beginning of the processing chain is) will ensure that this limit is never reached. And the very end of the processing chain standing white balance makes the raised brightness then reverses. So this is a high stability a "work-around".
-----------------
I tried it and I can can confirm IT WORKS:
How is it in real life :
My former settings (STANDARD mode)
backlight : 11
contrast : 74
brightness : 45
sharpness:0
color:34
...
...
White balance (advanced settings)
R-G-B offset : 25-25-25
R-G-B gain : 25-25-25
Using test patterns from calibration forum, namely level blacks 0 to 4%, and two day of comparing and testing with real videos etc, I have found, switching CE Dimming off starts at brightness 50, and each +/- 1 step makes big difference.
Raised level of black (brightness) can be compensated by R-G-B offset.
below are my new settings, CE Dimming is almost switched off - not noticeable. Clouding is not visible (night test WO ambient light, black remains deep black), picture color tone seems to be OK :
backlight : 11
contrast : 73
brightness : 53
sharpness:0
color:34
White balance (advanced settings)
R-G-B offset : 12-12-12
R-G-B gain : 25-25-25
gamma:0
Try it, it should work on other models from ES6xxx series, I believe on whole ES series.
Waiting for your comments, and, sorry for my english - not my natural language,,

glewarne
Posts: 4
Joined: Fri Oct 26, 2012 2:19 pm

Re: Auto-Dimming/CE Dimming

Post by glewarne »

djstevie wrote:
glewarne wrote:Registered here to report my sucess on this!
I have a UK PS51E530 which does not have an ethernet support, or WiFi networking enabled
I've got the same model. Did you notice if there were any options to disable auto dimming? Im suffering from the famous auto dimming issue and its driving me nuts. Did the cinema smooth option make any difference in 24p mode?

Well, apart from disabling ECO sensor support, i didnt see anything that jumped out regarding the brightness limiter. but i think its hardwired and cannot be changed.

As for CinemaSmooth, can say yet since i only fiddles very quickly and never got the chance to play a bluray before I went to work.

Ill be experimenting tonight when I get home ;)

djstevie
Posts: 12
Joined: Fri Oct 26, 2012 5:15 pm

Re: Auto-Dimming/CE Dimming

Post by djstevie »

Gutted. The brightness limiter is set too aggressive on this tv, for me anyway. Please keep me informed of your progress. :)

glewarne
Posts: 4
Joined: Fri Oct 26, 2012 2:19 pm

Re: Auto-Dimming/CE Dimming

Post by glewarne »

djstevie wrote:Gutted. The brightness limiter is set too aggressive on this tv, for me anyway. Please keep me informed of your progress. :)

yes i agree about the ABL, however on my set its only realy apparent when watching the built in freeview, everything else (all via PS3) seems substantially better

djstevie
Posts: 12
Joined: Fri Oct 26, 2012 5:15 pm

Re: Auto-Dimming/CE Dimming

Post by djstevie »

Sky tv is murder for it, does it all the time. Havent had it on a 24p Bluray but have noticed it on Xbox 360 sometimes although is quite rare. Wish there was a way to turn it off as its a major bugbear of mines. Spoils the tv for me as otherwise the picture quality is excellent.

Prsut i did try those settings you posted but it didnt make any difference at all im afraid. With those settings it was far too dark on my set and colours looked washed out. Also didnt stop the dimming/brightening.

On my set i calibrated with AV Disc and the optimum contract ratio for me is 88 and brightness at 46. Having contrast at 73 and cell light at 11 is too dim im afraid but thanks anyway for the suggestion.

*EDIT* i think that the dimming you are talking about is different from the issue im having. As yours is a LED and mines is a Plasma it would appear that my issue is to do with the Automatic Brightness Limiter being overly aggressive. Sorry for the confusion.

glewarne
Posts: 4
Joined: Fri Oct 26, 2012 2:19 pm

Re: Auto-Dimming/CE Dimming

Post by glewarne »

i have been tweaking my Tvs voltages a bit now, have got a better black level (lowered VScan) and i was able to slightly reduce the overall brightness by reducing Va to the minimum

the ABL seems much less dramatic now, without changing any settings

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