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Lumens is important if you have ambient light. Less important in a dedicated home theater room. For comparison a candle generates 13 lumens and a 100W light bulb about 1,200.


Here's a nice article describing candlepower, candela, lumens, foot-Lamberts, etc but the short form is the brightness of the projector x shineyness of the screen / size of the screen gives you the final image brightness.

http://www.dalite.com/education/angl...ils&issueid=27


Bigger the screen the brighter the projector or the higher the gain screen to get the same final brightness you desire.


Movie theater is ~16 ftL, RPTVs ~30 ftL, CRTs 40-50 ftL and plasmas 70+


If you want a huge plasma like setup then you want more lumens.


Regards,


Nigel
 
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