AVS Special Member
Join Date: Nov 2003
Location: Sharply focused on sharper focus.
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The biggest image I've personally seen was from an AmPro AE-4/7400 light
valve projector that I owned for a time. (Prize from AmPro's bankruptcy
auction, which I went to.) With 5000 lumens to spare and a full assortment
of lenses of varying throws, I was enjoying watching movies on the side of
the garage wall on my neighbor's house across the street. That wall is
about thirty feet long and I had to use the longest throw lens (7:1) I had to
keep the image within the confines of that wall. (But even then, only 2.35:1
ratio movies would really fit properly. Anything else would display partly on
the grass and partly on the roof.)
Brightness was very adequate at that size, too!
If I'd had a larger surface to throw the image on, I'd say that it could have
managed a very watchable image at fifty feet wide, in a well light controlled
room or on a dark night outside.
Really big is really fun, no matter how you get it!