Recommended throw for the UH480 is 3X screen height or more, so you are good there. Optimum throw distance is 14.5 - 17.5 feet, but you should still have very good focus at 12'. I've seen the 480 at 12' many times and it looks great. It would be *slightly* sharper at 14.5', but we are talking differences in sharpness only really noticeable with test patterns at about 3 feet from the screen You will have some slight pincushion.
1/21/14 at 4:41pm