Here is my situation. I currently have an Optoma HD7100, which works absolutely wonderfully for PMZT. (Poor Man's Zoom Trick) The thing is, I really want to go 1080p, as well as 3D. After researching the 1080p 3D situation, I've come to realize that a dual-projector setup is probably the most logical way to roll, but the downside is that it will turn into a logistical nightmare. Bouncing back and forth between 2:35:1 and 16:9 isn't that big a deal right now, because I'm only dealing with one projector, and I can make the manual switch in less than a minute of my time. The only time I even use 2:35:1 is when I'm watching a movie with that aspect ratio. I mostly play Xbox 360 and PS3 games (16:9), watch some movies (both 16:9 and 2:35:1), and watch high def TV (16:9). I also watch some high def sports (16:9). I would say that about 3 times out of 10, maybe 4 times out of 10, I'm using it for 2:35:1. Still, the thing is, after going 2:35:1, there is no going back. I can't return to the days of watching a 2:35:1 movie on a 16:9 frame with the black bars above and below. I'm too used to watching it the way it was meant to be. I just can't go backwards.
Having said all of that, I'm definitely VERY interested in the whole 3D thing. I know we are just on the cusp of the 3D transition (if it even happens), but I'm the early adopter type that likes to jump on these bandwagons early. My major concern with a dual-projector setup, and Poor Man's Zoom Trick is that I won't be able to get it work for 2:35:1 3D movies. Right now, there is only one 3D Blu Ray movie that the public can get their hands on. Monsters vs. Aliens. This movie is 2:35:1, and if I ever get my hands on it, I would like to see it in it's natural aspect ratio on a scope setup using PMZT, but I don't think it will work because of the height of my ceiling, and how the dual-projectors will have to be setup. Which ever projector I'm going to get ( x 2 ), I'm going to make sure it has horizontal and vertical lens shift, and enough zoom for me to do CIH. The problem is, that I'm thinking that just for the logistics of setting it up just to do 16:9 3D, it's going to require one of the projectors to already be using the lens shift features, just so that both screens will be layered on top of each other perfectly.
If I were to, on top of all that, try to then Zoom both of them out, and overlay the image perfectly for 2:35:1, I'm just thinking that it will be very, very difficult, and very time consuming, and I'm not sure it would even work. I'm dealing with a low ceiling. I think my ceiling is like 8 feet 1 inch. I have to ceiling mount both projectors, and the big downside is that the bottom projector is going to be pretty freaking low. This could create a serious problem for PMZT because when you zoom out for PMZT, the image drops down, and you have to use the vertical shift to get it back up, but since the bottom projector will already be using vertical shift, I'm just not sure that it will have enough of that shift to get it up far enough when trying to do 2:35:1 3D. I don't think I can stack them too close together, because of heat dissipation issues. Offset and throw distance are going to be very crucial to the whole thing. I'm going to practically need to hire a mathematician to figure it all out.