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plasma v lcd v rear pro dlp/lcd...comments anyone?

Discussion in 'Plasma TVs' started by Gordon @ Convergent AV, Aug 14, 2005.

  1. Gordon @ Convergent AV

    Gordon @ Convergent AV
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  2. Badger0-0

    Badger0-0
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    I respect your opinion Gordon, but that's a bit glib :thumbsdow

    I would have thought that ISF could be believed :confused:

    I realise it is sponsored by Pioneer.

    What are your views??

    Are you saying it's downright advertising? (was going to say lies) and which points do you disagree with?
     
  3. Boris Blank

    Boris Blank
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    The bit made me laugh out loud was "..the plasmas that were tested actually outperformed the reference CRT on black level".

    Perhaps the CRT was calibrated by the same twonks that wrote the article no doubt.

    :rotfl:

    Paul
     
  4. k0rn

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    I think this they make some good points... it´s not entirely true but I´d not say that it´s BS.
     
  5. Gordon @ Convergent AV

    Gordon @ Convergent AV
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    I think you misunderstand what I'm saying....My own thoughts are probably like yours...it's funny that research sponsored by a manufacturer of plasma screens comes out and says guess what....plasma is great....all your fears are misconieved.....I mean honestly.....There's lots I find I want to question about this......but I wanted to see what sort of hornets nest it throws up.....

    I have now written and deleted two replies detailing some questionable things in this....I'm going to leave it for a couple of days now and see what happens....Please do not think I'm gloating or that I think as its the ISF that did the test it is the truth and the light......

    G
     
  6. Badger0-0

    Badger0-0
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    I see where you're coming from mate :smashin:

    I just assumed you were rubbishing the link, whereas you were probably going the other way. My mistake :suicide:

    I'd appreciate your views on this, but can wait a couple of days, np.

    Hornets nest isn't the word, IMO :)

    Although it's interesting that someone is complaining about screen burn on a Pio :(
     
  7. rowlandhills

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    I just love the start of the executive summary
    :)
     
  8. Gordon @ Convergent AV

    Gordon @ Convergent AV
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    I think it has some points to make...but the methods used are questionable.

    As has already been pointed out there's some funny stuff in there.

    G
     
  9. Badger0-0

    Badger0-0
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    I actually agree with that statement.

    I have a mate who, although very intelligent, couldn't be bothered to do any research at all :(
    His cheap CRT was flickering, so he thought he needed a new telly, even though I told him it was probably just a crap connection.
    I really think it was a case of "if you think I should get a plasma, I'll get one"
    Which is p*ss poor to my mind.
    I cajoled him to at least look and he bought a decent screen :smashin:
    Just goes to show people don't know what they're looking at.
    (I was in that group a couple of months ago)
    I'd love a pound for every time I've heard "it's a picture, aint it??"
     
  10. Boris Blank

    Boris Blank
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  11. sandstheman

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    Having looked at that Pioneer PDF, one thing makes me wonder.

    the light output decreases, they are claiming that the LCD drops by 11% after '4 weeks aging', but how can that be - it's fair enough for Plasmas and CRT's which use Phosphers that are physically burned away over the TV's life. But correct me if i'm wrong, but LCD's don't use phosphers, so are they saying that the crystals are burning out over time, or maybe they are referring to the backlight fading, but again, i'm not sure that the backlight does fade over time, it does have a lifetime figure, but i reckon thats more in relation to when the bulb will fail, rather than it actually fading over time.

    The paper just seems like Pioneer are trying hard to convince Joe Public that plasmas are the ultimate device to use as a TV
     
  12. NicolasB

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    They are talking about the backlight fading. (This is what sets the limit on LCD lifespan).
     
  13. nheather

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    I don't understand the brightness life figures.

    24 hours over 4 weeks is 672 hours.

    The TV, LCD and Plasma decay at 22.8%, 11.2% and 5.5% respectively.

    Assuming this trend continues i.e. after another 672 hours the TV will drop a further 22.8% and so gives very low half lives, namely

    CRT - 46% after 2016 hours
    LCD - 49% after 4032 hours
    Plasma - 48% after 8736 hours

    So in other words the half-life of a CRT is about 1.4 years at 4 hours per day. My current CRT, a Toshiba is over 6 years old and the brightness and contrast are still set at values I setup originally (just under 50%) and I haven't noticed degredation.

    I must be missing something - what is it?

    Cheers,

    Nigel
     
  14. sandstheman

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    Ah right ok, just wasn't sure whether the backlight's do fade or not, but not an issue on my screen, as they are replaceable :D
     
  15. Nick_UK

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    Not really. Most backlights in LCD displays are replaceable, unlike the phosphors in a plasma screen :)
     
  16. NicolasB

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    Well, yes, but a) this is expensive - it'd probably be cheaper to buy a new TV by then - and b) all I meant was that if the lifetime of an LCD display is quoted as (say) 60,000 hours, this is what they mean: 60,000 hours is the time it takes for the backlight to dim to half of its original brightness. For a plasma it would be the time for the phosphors to age to an average of half of their original brightness.
     

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