Lucky for me, I have access to Doable. My projector has some flexibility as far a zoom and offset. I was toying around with the idea of doing a CIH 2.40:1 screen, but in my room, when I got the perfect 2.40:1 image, my 16:9 material looked too small. Vice Versa, when I had the perfect 16:9 screen, it had more impact on those movies than when I switched to a 2.40:1 movie. I read about Constant Area Image, so I built my screen to 2:1 aspect ratio. For me, it worked out perfectly. Sure it requires manually zooming when I switch aspect ratios, and when I zoom out for 2.40:1 content, I have about 3" of overspill for menu's and trailers (which my velvet border catches), but I am very happy. I now feel that I am getting impact for both 16:9 material and 2.40:1 material without compromising either.