Originally Posted by kromkamp View Post
Oh that's great to hear then. I googled a projectorreviews review for the 1200 calibrated lumens.
I'll be trying to light up a 10.5' wide acoustically transparent screen and was thinking 900 lumens is marginal at best. 1500 should be plenty.
It will be but the bulb will dim with accumulated hours and with a big perfed screen, plan on replacing the bulb guessing at about 1000 hours. Then again your eyes get very used to gradual dimming and you might not even notice it much until you replace the bulb.
Having a halfway decent light meter means never having to say " I'm sorry ( it's so dim ) " !!
Ya, 900 lumens on a 126" wide screen with a real gain of .9 = 13 foot lamberts. 1500 lumens = 21.80 foot lamberts.