Originally Posted by Deja Vu
Radjam, can you give us a breakdown of the cost for your 2 projector system? Just guessing, but I suspect we're talking about $12,000 to $18,000 including the filters, two converter boxes, two projectors and screen. You will have two lamps to replace instead of one for those projectors. I have two almost identical Epson 1080p LCD projectors (with an extra lamp for each), but I don't think LCD will work nor will my HP screen. If I could get away with $3 to $4K I'd give it a shot. Using a passive system the DI for each projector could remain active and the black level would be awesome. The best black level I've seen from any digital was when I put my Epson 9500 into dynamic mode, DI on and lamp on normal mode (as opposed to economy) and watched the crummy 3D with the cardboard glasses - full fade to blacks!
Mine is definitely not the cheapest way to do this - since I really wanted to have JVC units, both for the CR and for the Frame Interpolation (which I think vastly improves the 3D quality).
However, that said, the concept applies to almost any two-projector setup. There is no reason two LCD projectors cannot be used for one of these setups UNLESS they fail the polarization tests.
To see how to test your projectors, see the opening posts on the first page, where I have some directions and photos. As long as all three colors are polarised at the same angle, you can use a pair circular polarizing filters to pull this off.
Apart from the costs of the projectors (and 3D Bluray player, of course), my costs to pull this off so far amount to:
2 x Optoma 3DXL boxes ($400 each) - - - - - - - $800
1 x pair of circular polarizing filter "samples" - - - -$25
10 RealD Glasses (which I may need to re-build) - $25
1 silver-based polarized 3D compatible screen - ?? can be from $hundreds to $thousands
1 x a LOT of time, although this will be easier for those who look at my work here
I am in the process of rounding up screen samples for testing before I make a selection. Should have about 6 samples to work with and will be testing for polarisation retention (for 3D) and hotspotting (for 2D). Ideally, I'd like to have a superb 3D screen, which is also excellent when used for 2D. Is that a 32D screen??