Originally Posted by drummermitchell
Scott,what would you consider a short throw?
I have a 118"X50"(viewing area)screen @ 15-16'from projector(X9).
I'd hate to have to change screen when I get the lens,THX.
At 15.5' that's a 2.09 TR. I generally don't spec curved screes at TR's above 2 for geometric issues, but I wouldn't advise someone to go get another screen at a 2.0 TR either. 3.0 is a nice long TR and pretty much does away with geometry issues, 1.6 could use the help, 2.0 is in the middle. Again, for geometry issues only.
And I agree with Jason. Price aside, there can be negatives. With the wrong material the screen can wash itself out depending on it's gain angles.
Without a lens, a curved screen will cause barrel distortion (bottom curves down). This is most apparent with short TR's and a ceiling mounted PJ where all of the barrel will occur at the screen bottom. A proper curve can split the error between barrel and pincushion.
That said my personal screen is a 40' radius curved FireHawk CineW, 56" tall, and about a 1.8 TR. I get pretty perfect geometry with the lens in but get barrel with lens out. It doesn't bother me. The only time I even notice is with a windows desktop if I have a HTPC desktop up. For me the curve was more about uniformity and with the Firehawk and my setup parameters, it is wonderful. love it.
So one has to look at the big picture. Room constraints, fabric choices, PJ lens issues, what kind of lens you have, width of your seating area relative to the screen size, etc. It's not as simple as a curved screen is better, or not.
We didn't talk about the personal preference factor. Some people like the look of the curved screen in the room, some don't care for it.