When you say it zooms out 'too far' - how far is that?? Screenshots?
Its possibly the fact that you're using the diagonal length thats throwing it off a bit. Maybe calculate the square root of the diagonal and redo your calculation (with more trial and error) from there. Should help to reduce the problem if its one of those things that becomes more apparent the further out you zoom.
Its possibly the fact that you're using the diagonal length thats throwing it off a bit. Maybe calculate the square root of the diagonal and redo your calculation (with more trial and error) from there. Should help to reduce the problem if its one of those things that becomes more apparent the further out you zoom.