Archived posting to the Leica Users Group, 2000/08/27
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]><Snip> > After using the new aspherics for a while I really appreciate the difference > between critical focus and zone focus - not the same thing at all. Of > course, I could be wrong. Tell me I am. > Rob. > I'm not familiar with the difference between critical focus and zone focus, Rob. Sounds like what you are focusing on verses what you depth of field would then be. I would seem obvious that the center of you depth of field would be sharper than the edges. One could go one F stop "in" as Jim Brick mentions he does. Markwr