Archived posting to the Leica Users Group, 2001/02/08
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]on 2/8/01 12:59 AM, Jim Brick at jim@brick.org wrote: > At 09:48 PM 2/7/01 -0500, austin@darkroom.com wrote: > >> I believe you are 'confusing' DOF on the film with DOF on the printed > image at viewed distance. They are different. Even on the print, then > again at viewed distance have different 'DOF' too. I believe I posted > previously on this, and why. > > > Thank you Austin... > > Jim Okay, I understand the difference completely, but then we need to have a way of distinguishing these terms. DOF as commonly measured on eg lens scales or by DOF charts refers to DOF on the printed (or projected) image at certain nominal degrees of magnification. If you look up vanilla DOF formulae this is what they describe. Describing them both as DOF leads to exactly this confusion. Is there some convention to distinguish them? Like DOFf and DOFp? Otherwise it's madness. - -- Johnny Deadman http://www.pinkheadedbug.com