Need specs for cinema use

post in this thread.

http://www.avsforum.com/avs-vb/forumdisplay.php?f=86

Resolution: ideally 1080p/2K (unless seating is relatively far from screen).
Native lens: 2.9:1 throw ratio (60' throw / 20.4' 16:9 screenwidth)
Scope lens: Add-on lens needed to stretch width to 27'; prices start at a couple of thousand $
Brightness: Screen is 310 sq ft. Movie theater reference brightness is 14 fl. 310 x 14 = 4340 REAL lumens required if current screen is 1.0 gain.

In fact you'll need something specced at 7000+ lumens (list of suitable models) as brightness is reduced by calibration, the scope lens, and bulb aging.

Since you posted this in the $3k-$20k forum, full 2K digital cinema models are all out of budget. There is just one model - Boxlight Pro80S3 - that comes close. It ticks all boxes except for resolution.

If your budget is in fact over $20k ask a mod to move this thread to either the $20K+ or the D-cinema forum - the experts there can advise.

Mainly for personal use? In that case, simple solution: fill only part of that huge screen, and put both the projector and your sofa closer to it!

Your competitor probably has an Optoma EP1080 which is exceptionally bright for the budget, probably usable up to 15'. The only similar alternative is what I have: a Dell 7609WU, which I know does 17' well. Both these models have limitations (rainbow effect in particular) but prices jump to $15-20K for anything brighter.

The Optoma is so cheap, you might consider stacking two EP1080s together and aim for a 16:9 image that fills the full height of your screen (20.4 x 11.5'). Of course stacking brings it's own disadvantages...

Just for laughs:

The Optoma's standard lens at max zoom actually does 27' wide from 60' away. That's 16:9 rather than 2.35:1, so non-scope images would have to be digitally zoomed down to avoid chopping heads& toes off.

Also, you may now need 3 of them stacked to make up for the light thrown away above & below the screen