If you're already sitting at the best distance for your current screen, and find sitting closer is less comfortable, going for a larger screen will make you want to move your seats further back to retain the same viewing comfort and image size on your retina (all else being equal). It may also add some wow factor when walking in the room and seeing a larger screen.
So you may find sitting 10 feet from a 10ft wide screen is ideal for you, then realise you can fit a 15ft wide screen, but then have to move your seats to 15 feet back to retain the same comfort as before. In doing that, nothing has changed visually when viewing a movie.
If you can sit closer with a larger screen, then you probably weren't sitting as close as you could with the previous screen, or something else has changed, like perhaps the vertical viewing angle which is more limiting that the horizontal.
Originally Posted by elmalloc
Who says Cameron is "right" and why do we care about him so much - lol!
I trust Gary Lightfoot more than James Cameron.