So are all modern 4K movies shot in widescreen? Am I losing out by using a 16x9 screen? What size widescreen would be comparable too a 100” 16x9 screen? As I have upgraded my projector and receiver ...currently adding 4 speakers....my weakest point in my theater would be my screen. A basic white $300 16x9 100” fixed framed. Looking to stay in the $1500 budget area. Have about 24 inches on the wall width wise too play with. So likely a 120” screen.