Archived posting to the Leica Users Group, 2003/08/08
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Don Dory wrote: > > Feli, > I use the 75 Summilux with either a 0.72 Classic and the 1.25 maginifier > or an M3 (equivalent to the 0.85 mag close enough). > > As you know the 75 has less DOF at 1.4 than the Noct at F1. > > Don At least a few of us know that part of the reason you are getting less in focus with the 75 over a 50 is because the magnification is probably higher. That and the close focus stop out with the Noctilux. If you pulled the 75 back behind the Noct so each was re coring the same amount of the image. At 1.4 the DOF would be the same if they are both set at 1.4. Then the Noctilux can open up to 1 and get less DOF (depth of field). Both lenses would be perhaps equal and rendering background you flew across the ocean to get, unrecognizable mush. And aquarium with a problem. Mark Rabiner Portland, Oregon USA http://www.rabinergroup.com - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html