Screen size with 4 metre projector throw?

[jautor]

Originally Posted by Visionist

How big of a screen does this give me in general? I suppose it varies from projector to projector, and whether one uses an anamorphic lens. I won't be going for a constant image height as I love films with IMAX scenes which open up.

There's less than 10 films that have the mixed-aspect IMAX presentation on BD - since The Dark Knight in 2008/2009 - that's about an average of one release a year. I'm biased because I have a CIH setup, but I wouldn't base my AV setup decisions on such a small amount of content.

I'm hoping for a 150" 16:9 screen although this might prove ambitious at that distance.

It may be possible depending on the PJ, but...

Also, at my seating distance of ten feet, would a 1080p resolution on a 150" screen look good? Or should I wait for 4K to become affordable?

1080p will be fine - but 150" would be huge for a 10' seating distance. My front row is at 9', and the 108" (in 1.85) screen is as big as I'd possibly want at that distance. Any larger would be uncomfortable. But it looks great from my second/third rows, which is why I made it that large.

Figure your screen size from your seating distances, not the other way 'round. And you should wait on the screen until after you're room is set up and you have the projector in hand, ready to use. Test various screen sizes for real (blank wall, photographer's backdrop, white sheet) to figure out your preference within the recommended range (THX view angles). Then order the screen...

Jeff