I had a 600-lumen projector to use as a TV (before getting a 2000-lumen projector). 600 lumens requires a mostly dark room to see an image larger than a typical CRT, so I would think 15 lumens would be a neat parlor trick, but a pitiful viewing experience.
The blacks you see in a projected image are not black as in an LCD image; they are the ambient light level in the room--just no more light added--so the brights have to be really bright for the blacks to seem black in comparison.
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I had a 600-lumen projector to use as a TV (before getting a 2000-lumen projector). 600 lumens requires a mostly dark room to see an image larger than a typical CRT, so I would think 15 lumens would be a neat parlor trick, but a pitiful viewing experience.
The blacks you see in a projected image are not black as in an LCD image; they are the ambient light level in the room--just no more light added--so the brights have to be really bright for the blacks to seem black in comparison.