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Contrast quickie

Discussion in 'Projectors, Screens & Video Processors' started by explicitlyrics, Apr 30, 2003.

  1. explicitlyrics

    explicitlyrics
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    Just a quick question, I cant find a helpful answer on the web about dlp/lcd projector contrast ratios. I can understand why a high contrast will burn out a CRT but will it do the same to a dlp/lcd projector? Also the 100ANSI lumens on the X1, should it be turned down or will the bulb life still be respectable with that. Thanks, Chris
     
  2. LV426

    LV426
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    The bulb life in DLP and LCD PJs isn't affected by contrast or brightness settings. The bulb runs always at the same level (*) - it is the opacity of the LCD panel (or tilt of the mirrors in DLPs) that is adjusted with contrast & brightness. In both cases, these devices simply filter out some of the (otherwise fixed) amount of light being produced by the bulb. DLP and LCD panels themselves are unaffected by the settings you use.

    (*) - except in PJs, like the Sony VW's, where the actual brightness of the bulb can be altered - in Sony's case there are only two settings - the 'dimmer' of the two is called 'cinema black' - in which case bulb life is extended when the dimmer value is used. This doesn't affect contrast however - just overall brightness.
     
  3. explicitlyrics

    explicitlyrics
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    Ok, so unlike CRT projectors, there would be no change in the panels whether you use a high or low contrast. Thanks, Chris
     

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