Local dimming on LG 42LM6200? - AVS Forum
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post #1 of 12 Old 09-04-2012, 05:15 AM - Thread Starter
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I have heard this set has local dimming but you need to "turn it on". My first quesiton is; is this true? If yes, why would it be turned off? I had thought local dimming was "better" than simply utilizing edge lit technology but perhaps I am not understanding the purpose of each. I've read a lot and that's what I took away from it but I must be incorrect. Any insight?
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post #2 of 12 Old 09-04-2012, 08:01 AM
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When Local Dimming is set to ON ''individual zones will be dimmed or brightened independently and because of this a Local Dimming can have significanty better black levels and uniformity than normal LCd''.
http://reviews.cnet.com/2795-6482_7-399.html
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post #3 of 12 Old 09-04-2012, 09:27 AM - Thread Starter
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Right...I understand that and read that same review page (thanks for posting the link). But I am confused on this model specifically. My questions were really:

1. Does this set have local dimming or not (have seen conflicting reports)

2. If it does, why would it be a "turn on/turn off" function? Shouldn't it be on all the time?
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post #4 of 12 Old 09-05-2012, 05:29 AM
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Quote:
Originally Posted by fishiepooh 
Right...I understand that and read that same review page (thanks for posting the link). But I am confused on this model specifically. My questions were really:

1. Does this set have local dimming or not (have seen conflicting reports)

2. If it does, why would it be a "turn on/turn off" function? Shouldn't it be on all the time?

1.according to CNET its a Edge-LIt
http://reviews.cnet.com/flat-panel-tvs/lg-42lm6200/4505-6482_7-35153186.html

2. On will give you better PQ, if you do not like that you can turn it off. Lot of folks do not care about PQ.
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post #5 of 12 Old 09-05-2012, 06:02 AM - Thread Starter
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I can understand PQ not being as important as other features. I don't feel that way but if others do, so be it. But if you had an option on a television to turn on to create better PQ, why on earth would you not do it? So then why wouldn't LG just remove it as an option and have it work all the time. Seems very odd to me. Looks like it's Edge lit with local dimming versus the more pure "full array".
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post #6 of 12 Old 09-05-2012, 10:31 AM
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Maybe using local dimming will reduce LEDs lifetime? I mean, they'll be switched on/off quite frequently...
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post #7 of 12 Old 09-05-2012, 11:03 AM
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Local dimming will not reduce LED lifetime, but rather prolong it. Local dimming also reduces the amount of energy consumption used by the television.
The reason why local dimming is an option, along with other PQ-enhancing options, is because NOT all sources would accommodate them.
For instance, gaming or fast action sources such as sports need extremely fast response times. By having PQ enhancing features turned on,
there will be a noticeable input lag as the processing required to analyse the source and enhance them does add additional milliseconds.
Milliseconds can add up and slow things down for gamers and the sort.

Therefore by turning off these features, you can eliminate a large portion of the input lag in the television.
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post #8 of 12 Old 09-05-2012, 12:01 PM - Thread Starter
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TAHNKS DIY! Very enlightening!
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post #9 of 12 Old 09-05-2012, 01:47 PM
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Quote:
Originally Posted by Do-It-Yourself 
Local dimming will not reduce LED lifetime, but rather prolong it. Local dimming also reduces the amount of energy consumption used by the television.
The reason why local dimming is an option, along with other PQ-enhancing options, is because NOT all sources would accommodate them.
For instance, gaming or fast action sources such as sports need extremely fast response times. By having PQ enhancing features turned on,
there will be a noticeable input lag as the processing required to analyse the source and enhance them does add additional milliseconds.
Milliseconds can add up and slow things down for gamers and the sort.

Therefore by turning off these features, you can eliminate a large portion of the input lag in the television.

Seems to me that most Local Dimming owners use the Game Mode - automatically turnes Local Dimming off - when gaming and leave the Local Dimming option on (standard) the rest of the time. I myself use Local Dimming all the time even when playing games.
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post #10 of 12 Old 09-05-2012, 03:25 PM
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The L,M6200 does not have local dimming. LG calls its edge-lit with local dimming tech "LED Plus." The 6200 does feature LED Plus. The feature begins at the LM6700.

Perhaps the local dimming option is baked into the firmware and is accessible through the 6200's service menu (some LG sets from 2011 were like this), but the 6200 does not officially support local dimming.

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post #11 of 12 Old 09-06-2012, 08:38 AM
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post #12 of 12 Old 09-24-2012, 06:13 PM
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Quote:
Originally Posted by gvc View Post

http://www.avsforum.com/t/1403070/lg-passive-lm6200-dedicated-thread/450#post_22271637
local dimming can be activated in service menu
yeah but it doesnt look good IMO
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