Originally Posted by steve68
2.35:1 is what Hollywood is going to but right now the vast majority of movies, games, HD TV content is 16:9. If you have a 2.35:1 screen and you want to watch 16:9 content then you end up with huge black bars on the sides of the screen. Either way you are going to have black bars. Here is another advantage to having a 16:9 screen, SIZE. You can put a much bigger 16:9 screen on any given wall than you can a 2.35:1. My screen is 102" diagonal and is a 16:9. It is the absolutely largest screen I could fit on that wall. When I watch 2.35:1 movies they still stretch the entire width of my screen. But if I had put a 2.35:1 screen on the wall when I watched a 16:9 movie it would be a smaller image because the 2.35:1 screen would have a smaller height. 16:9 is the best of both worlds. You will get the biggest image for both formats.
Actually, anybody going with 2:35:1, is going to use either a Constant Image Height screen, or a Constant Area Screen (it's called something like that).
I'm using a Constant Image Height screen. When I watch 16:9 material, it's a 126" 16:9 screen (diagonally). When I watch 2:35:1 movies, it's almost 12 feet wide screen. The height of the image (top and bottom) is exactly the same, the only thing that changes is the width. Basically, you just use something to mask the sides when you are watching 16:9 material. Most people use curtains or something like that.
The key with using Poor Man's Zoom and a Constant Image Height screen, is that you need two things:
1. A projector with zoom of 1.33 or more
2. A projector with lens shift
I forgot to mention the lens shift part of the equation, and it's very important. I had a Mitsubishi HD1000u, which I absolutely loved the image quality from that projector, but it didn't have lens shift. I tried to do the poor man's zoom, and discovered that when you completely zoom out the image, the image drops down pretty far, and slightly to the left. You need to somehow raise that image pretty considerably, and then you also need to make the image go a bit to the right. You need both horizontal and vertical lens shift, as well as a zoom of 1.33 or greater.
I've always been a DLP projector guy, and finding a 720p DLP with lens shift and 1.33 zoom (under 2 grand) is extremely difficult. I actually ended up with a projector that has zoom less than 1.33, and the downside with that, is that although the top part of my screen has the exact same height for both 16:9 and 2:35 material, the bottom part of the screen (just the 16:9 area), is about 4 inches lower than the 2:35:1 portion of the screen. So, when I'm watching a 2:35:1 movie, I have to mask the bottom portion of the 16:9 area.
I'll try taking some pictures tomorrrow, to explain it.