Archived posting to the Leica Users Group, 2000/09/17
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I wonder how the 75/1.4 manages with the .58 model wide open? dan c. At 12:07 PM 17-09-00 -0700, Tom Schofield wrote: >Mark, > >Read Erwin's "more than you ever wanted to know" article on rangefinder >accuracy. (Or even just the concluding paragraphs!) Apparently, increasing >focal length is more of a problem to rangefinder accuracy than wider lens >openings. The 135 APO is more critical to focus with a rangefinder than the >Noctilux. Leica's press release says that the 0.58 is suficient for the >Noctilux and 90 APO. Erwin's paper says even the 0.72 is pretty marginal on >the 135 APO. > >> I'm not mathematician or physicist but I'm surprised they would have >frames for >> the Noctilux (which I don't got) and not for the 135 3.4 apo (which I do >got - >> and like) >> I would think the trigonometric situation would be just as adverse, >> course they wouldn't let be get NEAR trigonometry darn it! >> Markwr > > > > >