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Does LCD TV dim over time? And response time..

pig098
09-08-2009, 04:05 PM
someone said it stays bright unlike Plasma

and some said it gets darker as you use it.
from couple articles i read.
so which is it?

and

i was looking around to buy TVs

and i saw this model

it says response time is 8 ms which is not bad. you wont notice 8ms but
on the description it says

"Gaming Mode -- Enhances the gaming experience by reducing game controller delay. The Gaming Mode allows the video signal to bypass select picture circuitry to shorten the overall signal to screen time. This provides an approximate 33 millisecond response improvement for 60Hz models and 48 millisecond response improvement for 120 Hz models virtually eliminating controller delay."

i say 48 ms sounds pretty significant. on the Title it clearly says 8 ms. so why for gaming is it 48 ms?

does all LCD TV that claims 3-8 ms actually have 48 ms for gaming?
and is that TV optimal for gaming?

and for comparison, wut is the general response time of laptops LCD monitor's response time?

BeeF
09-08-2009, 04:25 PM
Yes LCD lamps do get darker over time and will eventually burn out (something else in the tv is more likely to fail by the time it would burn out though). I can't say much about the gaming mode, i personally think its just a marketing thing. I don't use any game mode on my LCD and there is no noticeable lag. As for computer LCD response times those vary as well, typically 2-5ms i would say though.

I'm sure someone else can and will give you a lot more info than i did.

pig098
09-08-2009, 04:30 PM
so compare to Plasma does LCD get darker faster?

pig098
09-08-2009, 04:34 PM
and i doubt its just marketing thing.

i could understand plasma company saying about that

y would they say the response time is 48 ms on their own product description?

BeeF
09-08-2009, 04:39 PM
so compare to Plasma does LCD get darker faster?

Thats a question that can't really be answered, both tv's will last you a long time. How dark they get over time depends on how its calibrated, and how often you watch it. Plasma is measured in half brightness, so how many hours it takes for the screen to be half it original brightness, which is a general statement that doesn't encompass how the consumer uses the tv. There has been a thread about this and the verdict came down to the fact that lamp life, or half brightness life, should not even be considered when buying a new tv.

I still can't say much about the gaming mode, I don't know much about that.

Lee Stewart
09-08-2009, 04:42 PM
These links will help you compare the two technologies:

http://en.wikipedia.org/wiki/Liquid_crystal_display

http://en.wikipedia.org/wiki/Plasma_display

pig098
09-08-2009, 05:42 PM
doubple post

pig098
09-08-2009, 05:43 PM
These links will help you compare the two technologies:


nope they dont help... i read portion of LCD does not answer my question and information is out dated i think

like for example, regular response time isnt 16.4.. its more improved.

as i said i read many articles already. and what i asked are left out or they just say "you shouldnt have problem on newer models" on the articles

Lee Stewart
09-08-2009, 06:34 PM
nope they dont help... i read portion of LCD does not answer my question and information is out dated i think

like for example, regular response time isnt 16.4.. its more improved.

as i said i read many articles already. and what i asked are left out or they just say "you shouldnt have problem on newer models" on the articles

Read carefully:

Response time: The minimum time necessary to change a pixel's color or brightness. Response time is also divided into rise and fall time. For LCD monitors, this is measured in btb (black to black) or gtg (gray to gray). These different types of measurements make comparison difficult. A response time of <16ms is sufficient for video-gaming,[2] and the difference between response times below 10ms becomes imperceptible due to limitations of the human eye.[3][4]

When a CEM lists the response time in their specs - they don't tell you how they came to that number.

All it has to be is less than 10ms.

BeeF
09-08-2009, 06:55 PM
Either way, a plasma is going to give, by far, the best gaming experience for the money.

pig098
09-08-2009, 07:00 PM
Read carefully:



When a CEM lists the response time in their specs - they don't tell you how they came to that number.

All it has to be is less than 10ms.

yes but. it says for games input lag is 48 ms not 10 ms...

my question is does ALL LCD have this input lag? and i can tell difference between less than 100 ms games and 100 +ms games

Lee Stewart
09-08-2009, 07:19 PM
yes but. it says for games input lag is 48 ms not 10 ms...

my question is does ALL LCD have this input lag? and i can tell difference between less than 100 ms games and 100 +ms games

Input lag

Input lag is a phenomenon associated with some types of LCD displays, and nearly all types of HDTVs, that refers to latency, or lag measured by the difference between the time a signal is input into a display and the time it is shown by the display.

http://en.wikipedia.org/wiki/Input_lag

BeeF
09-08-2009, 07:42 PM
Input lag



http://en.wikipedia.org/wiki/Input_lag

That's interesting. That's probably why about two years ago when I played Halo 3 online in HD for the first time at a friends house it was very difficult for me.

Joe Las Vegas
09-08-2009, 11:49 PM
I would have to say it does get darker overtime, not much though, I had to increase the brightness from 50 to 52 last month when I noticed my Vizio wasn't as bright as when I bought it 2 years ago.

pappylap
09-09-2009, 08:08 AM
y would they say the response time is 48 ms on their own product description?

Wow! now that is really slow..................:D
Every LCD spec I have read for in the last 4 years have claimed 8ms, 6ms, 4ms or even 2ms with the new LED/lcd models. Where do you get the 48 ms number?

auburnfan23
09-09-2009, 08:10 AM
It also said somewhere in there that the Plasma will not dim until about 100,000 hrs. which is over 10 years using it 24 hrs a day. So it seems like it will be awhile before it dims.

BeeF
09-09-2009, 11:20 AM
Wow! now that is really slow..................:D
Every LCD spec I have read for in the last 4 years have claimed 8ms, 6ms, 4ms or even 2ms with the new LED/lcd models. Where do you get the 48 ms number?

Thats the lag between the time a signal is fed to the tv and when it actually shows up on the screen. Its a completely different number than response time.

BeeF
09-09-2009, 11:22 AM
It also said somewhere in there that the Plasma will not dim until about 100,000 hrs. which is over 10 years using it 24 hrs a day. So it seems like it will be awhile before it dims.

On top of that something else in the tv is most likely going to fail before the brightness is completely gone. And plasma is measured in half brightness, so in 100,000 hours it will be half its original brightness.

pappylap
09-09-2009, 02:12 PM
Thats the lag between the time a signal is fed to the tv and when it actually shows up on the screen. Its a completely different number than response time.

How? when the lcd recieves a signal from a source it must shift the pixels to compensate for how much light to allow from the backlight for contrast and color saturation so how is Lag time different? could this be more internet hogwash?

Sorry, I must confess I have never seen Lag time as a spec on any Lcd spec sheet or review I have read.........Is there a source for this spec? I need to be educated.

BeeF
09-09-2009, 02:38 PM
How? when the lcd recieves a signal from a source it must shift the pixels to compensate for how much light to allow from the backlight for contrast and color saturation so how is Lag time different? could this be more internet hogwash?

Sorry, I must confess I have never seen Lag time as a spec on any Lcd spec sheet or review I have read.........Is there a source for this spec? I need to be educated.

Read the wikipedia article earlier in the thread about lag time. Companies purposely don't advertise them. Response time is how fast a pixel can change, black to black or gray to gray. Think about lag time in terms of video games (disregard controller lag). When you turn your character in a video game or pull the trigger to fire a gun, the signal that come from your xbox or whatever to reach your tv takes a certain amount of time. This gaming mode that was being talked about earlier is a feature that allows the signal to bypass certain parts of the hardware so the lag is reduced and the signal reaches the screen quicker.

I'm a little confused about it myself, and i could be completely wrong, someone correct me if i am. But thats how i understand it and it makes sense to me.