I have put a projector facing one of my walls (in a theatre/cinema style) in my condo and it took me hours of re-adjusting to get it right, and it perfectly fits the wall for me but my friends have said it looks very different for them then it does me (including showing each other what it looks like on the other persons screen, mine being pretty much perfect and theirs having most of the bottom cut off and a large portion of the top of the wall with nothing on it)
I have tried re-adjusting to fit for them but no matter what it looks different for other people