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Discussion Starter · #1 ·
I've got a hc3800 and i've read in a review that in calibrated low-lamp-mode it has ~ 565 lumens. With my 108" screen that would not be enough with a 0.8 gain screen (13 foot lamberts). However, the lens is very open, meaning the picture is as big as I can get it with that distace. How much brighter does an image get (like 20%?) compared to normal lense settings?




Edit: I found the answer myself, its 7% with open lense (in comparison to middle) and -9% with closed lense.
 
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