Archived posting to the Leica Users Group, 1999/06/14
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]> This I understand. My question therefore seems to be how does one > calculate or even estimate just what that "as much infront of 'infinity' > as possible" might really be? At hyperfocal, the far distance is infinity, the near distance is one- half hyperfocal. (This gives maximum DOF.) If you set focus at infinity, the near distance is hyperfocal, the far distance is... who knows? The mathematics gives a negative number (the negative of hyperfocal, to be exact), which indicates something beyond infinity. It has been suggested (by a Minox user, but I've lost the URL) that for distant scenes, it is better to focus at infinity rather than hyperfocal. The argument in favor of this involves perspective geometry, which is as much off-topic as Rolex, Mont Blanc, and Rolls Royce. Richard S.