Archived posting to the Leica Users Group, 2004/05/06
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I thought Stolze stops were fairly close to f/stops ... Stolze 5 between f/4 and f/5.6, for example. The markings on the Photar relate to much smaller openings, and much less light passage. I have run some casual tests, and the difference seems to be in the range of 6 stops (metered at 1/30 @ f/2.8, shot at 8 seconds at f/(or whatever, stolze)8). I do not have access to Leica Manual 15th edition, so any help would be appreciated. Max ----- Original Message ----- From: "Marc James Small" <msmall@infionline.net> To: "Leica Users Group" <lug@leica-users.org> Sent: Wednesday, May 05, 2004 9:56 PM Subject: Re: [Leica] Photar 25mm > At 08:06 PM 5/5/04 -0400, Max Weisenfeld wrote: > >Any advice on using this lens? When mounted on a bellows and Viso, the > >f-stops do not seem to relate to any meter I have ever found. > > > > Max > > These are not f/stops but, rather, are Stolze stops. See the 15th edition > of the LEICA MANUAL for discussion. Stolze stops are normal on most macro > lenses, be they Leitz/Leica Photars or Zeiss Luminars or Carl Zeiss Jena > Mikrotars. > > Marc > > msmall@infionline.net FAX: +540/343-7315 > Cha robh b?s fir gun ghr?s fir! > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information