I work at a school with an 800 seat theatre. We have morning assembly every day. There has been a sharp increase in powerpoint presentations. Up till now, we've been using spare projectors in our inventory - a PLC-WX250 (or similiar - most of our classroom / portable projector are around 2500 lumens), rear projecting onto a 13' by 17' screen on the stage. The projector is set up 20' behind the screen, giving a rough 200" diagonal. Obviously, it hasn't been very bright - 25 FL according to official calculations on Projector Central's calculator. Plus, I'm stick on constantly having to set things up - so I've gotten approval to go for an installed system.
I should mention - as a private school, I'm under orders to do this on a strict budget. I'm trying to keep exepnses to a minimum.
Projector would need to be mounted 9ft off ground, 20ft back. When I'm looking through Projector Central's database, I'm looking in the 5000-7000 lumen category. So here's what I keep running into - using stock lenses, projectors in this category would throw an image far too small (144') or far too large (380') at that distance. I should mention - 20ft is the distance from the back wall to the projector screen, and moving either isn't an option. What can I say, limits of architecture.
The next issue - take something like the PLC-XM100. $3K for a 5K lumens. But to get a proper-sized image (200ish inches), I'd need to replace the stock lens with a LNS-W20 - which costs $2.5K, and would only give me 32FL.
So that's where I'm stuck. A $500 projector gives me 25FL, whereas a $5.5K projector setup would give 32FL - kind of hard to justify that price with a small increase in performance.
The closest I can come to optimizing for this setup is a 3M X95i - standard lens would give a 185" diagonal at 20ft with 44FL.
Advice, tricks I'm missing, things I'm just being stupid on?
I should mention - as a private school, I'm under orders to do this on a strict budget. I'm trying to keep exepnses to a minimum.
Projector would need to be mounted 9ft off ground, 20ft back. When I'm looking through Projector Central's database, I'm looking in the 5000-7000 lumen category. So here's what I keep running into - using stock lenses, projectors in this category would throw an image far too small (144') or far too large (380') at that distance. I should mention - 20ft is the distance from the back wall to the projector screen, and moving either isn't an option. What can I say, limits of architecture.
The next issue - take something like the PLC-XM100. $3K for a 5K lumens. But to get a proper-sized image (200ish inches), I'd need to replace the stock lens with a LNS-W20 - which costs $2.5K, and would only give me 32FL.
So that's where I'm stuck. A $500 projector gives me 25FL, whereas a $5.5K projector setup would give 32FL - kind of hard to justify that price with a small increase in performance.
The closest I can come to optimizing for this setup is a 3M X95i - standard lens would give a 185" diagonal at 20ft with 44FL.
Advice, tricks I'm missing, things I'm just being stupid on?
