You usually need to be closer than a 120 degree viewing angle before you have to move your head to see the edges of the screen - that's around a 0.5 x image height distance or closer for a 16:9 screen (0.67 x IH for a scope screen).
2.4 x the image height gives 40 degrees and is where THX recommend you sit for 1080 HDTV 16:9 (best quality/immersion) but it's best to try things first to see what suits you. If you zoom for scope you may find the image a little chunky so can't sit as close as you would if you were using an anamorphic lens, so that's why testing will tell you what works for you. The screen texture itself may be the limiting factor for how close you end up sitting in some cases.
For movies, anywhere between 2 to 4 x the image height is the range where you would sit in a commercial theatre, so if you want to replicate that at home, you can try to get your seats at a similar distance to where you'd sit in the theatre.
Gary
2.4 x the image height gives 40 degrees and is where THX recommend you sit for 1080 HDTV 16:9 (best quality/immersion) but it's best to try things first to see what suits you. If you zoom for scope you may find the image a little chunky so can't sit as close as you would if you were using an anamorphic lens, so that's why testing will tell you what works for you. The screen texture itself may be the limiting factor for how close you end up sitting in some cases.
For movies, anywhere between 2 to 4 x the image height is the range where you would sit in a commercial theatre, so if you want to replicate that at home, you can try to get your seats at a similar distance to where you'd sit in the theatre.
Gary

































