when i got my old barco cinema pr. almost 3.5 years ago and people ask why i put
a 4000 watt xenon lamp inside that can do in 2d even at my big screen around
65ftl they call me crazy.
65 ftl is indeed a bit to much to watch in 2d at a black box like my cinema and therefore i reduce the light out to get
arround 35 ftl by just dim the lamp.
as the lamp drop fast (after 300 hours you lost 30%) than the 35 ftl becomes only
24,5 ftl and that not to bright anymore.
but than no problem you reduce just the dim factor a bit and you have
compensate the drop or you use contstant brightness and the pr. do this
today more and more people that saw this high lumen numbers in 2d and as it possible
to even do 3d in high lumen numbers (at least with this cinema pr. with big lamps)
more and more think the same birghter is better.
but this is limit for people with a big budget as there is no cheap consumer pr.
full hd with a good picture that can do over 10.000 lumen for less than 10K.
but some day it will be a pr. for this price level there and than much more will say
brighter is better.
for 2d a bright picture is important but for 3d its even more importent
and this cinema units can do perfect flicker free tripleflash (2x 72 hz)
from a 3d bd.