Quote:
Originally Posted by
Billybobjimbob 
Hi, anyone here ordered a custom sized seymour screen? Ive emailed Chris and my plan is to have the viewing area 140 inches wide and the height of a 120 inch wide 16:9/1.78:1 screen.
This would allow me to watch scope movies 140 inches wide, with a width mask to cover the extra height

i wouldnt compromise on the 16:9 screen as i could go 120 inches wide with full height, but would need two vertical masks to cover the extra width.
Anyone any thoughts on my method? Im also utilising an anamorphic lens 
If you don't mind extra masking and you want your 16:9 movies to be really big, then what you are doing is fine. Have you ever considered a CIH setup? If not, read on.
I have a 2.35 ratio 125" diagonal Seymour AT electric screen setup, and utilize an anamorphic lens as well. I use the more common CIH (constant image height) method of going back and forth between "scope" and 16:9 material. As the CIH name implies, the height of my movies always stays the same, 49" in my case. To go to a 16:9 ratio movie I switch my video scaler to normal (not expanding the image higher), and move my anamorphic lens back to normal (not stretching the image wider). With the 49" image height my 16:9 movies are 100" diagonal. With this method, there is no need for masking on the top or bottom of any movie format. I do have blank screen exposed on the sides when watching a 16:9 ratio movie or TV that could be masked, but it doesn't bother me unmasked, as my room is dark enough. I personally like having my "scope" movies larger than my 16:9 movies, as it maximizes their impact, and by having my image height constant, I have all formats of movies centered vertically at the optimum viewing height for my room.
I just wanted to be sure you have considered or are familiar with the pro's and con's of a CIH setup. If not go to this part of the AVS forum and they will tell you all you need to know.
http://www.avsforum.com/avs-vb/forumdisplay.php?f=117 I do wonder if you are you planning on "stretching" your "scope" movies taller with a separate scaler, or projector setting? If not you will lose some projector light output for scope movies.