Archived posting to the Leica Users Group, 2009/01/18
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Doug, My question to David was not really about his lens. He is aware that I am about to receive a similar lens which I plan to use, with an appropriate adapter, on my Oly E-510. I assumed that, with no contact between the body mechanism and the piece that David broke, the lens would stop down to the setting called for by the aperture ring. In other words, I assumed the lens would operate similar to a Takumar when set to "M". If this is not correct, I could be in trouble with my plans to use the lens on the Oly. Jim Nichols Tullahoma, TN USA ----- Original Message ----- From: <wildlightphoto@earthlink.net> To: "Leica Users Group" <lug@leica-users.org> Sent: Sunday, January 18, 2009 11:45 PM Subject: Re: [Leica] Leica R lenses on Nikon bodies with the Leitax bayonet > Jim Nichols wrote: > >>If I install the 28 on an adapter which has no mechanism to contact the >>lens >>part that broke, will the aperture ring still operate the aperture leaves? > > Depends on how much broke off. The aperture ring is directly connected to > the inner aperture ring, (the thing that stops the arm) and in all of the > lenses I've worked on it's immediately inboard of the aperture ring. > Break off enough of the arm and it will miss the stop and close to minimum > aperture or smaller, no matter what the aperture ring is set to. > > The arm is part of the inner aperture ring assembly which as a new > replacement part was $300 a number of years ago. > > Doug Herr > Birdman of Sacramento > http://www.wildlightphoto.com > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > >