I thought I would post my 2.4:1 W1070 setup to this thread in the off chance someone might find it interesting.
I had the perfect spot in my basement of my new house for a 2.4:1 screen. Unfortunately the common "solution" was to get a CIH lens that would go over the front of the projector to stretch the image when I wanted 2.4:1 and then move out of the way when I wanted 16:9. Those lenses cost a LOT of money and were totally out of the question.
Unfortunately the W1070 does not have enough zoom to display both native 2.4:1 and 16:9 on the same screen when mounted in a fixed position. I decided to make things overly complicated and constructed a sliding projector mount that allows me to move the projector enough to view both on my screen for ~$0 cost.
I just finished everything up yesterday and have been really enjoying the outcome. Please ignore the "paint" job on the mount. I got a defective can of paint and will be refinishing it at a later time. Also ignore all of the cords everywhere. I set things up for a quick test run, not as a final solution.
Testing my frame.
Finished 2.4:1 screen.
2.4:1 Guardians of the Galaxy test. Note that there is a window letting light into the room just off to the right of the picture. This was taken about an hour ago (4PM).
Position of projector in 2.4:1 mode.
Elf in 16:9.
Projector in 16x9 mode.