Archived posting to the Leica Users Group, 2012/01/14
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]One additional consideration is that it is possible to catch against the focus cam roller mechanism with the rearward protruding inner bayonet if the (collapsed) lens is not SQUARE to the mount when intitially presented or (after unlocking) as it is withdrawn. I tested with the collapsible Leitz Summicron 50mm. Cheers Geoff *Die besten W?nsche* http://www.pbase.com/hoppyman On 15 January 2012 12:45, Henning Wulff <henningw at archiphoto.com> wrote: > All collapsible Leica lenses can be collapsed without damaging an M8 or > M9; firing the shutter while the lens is collapsed will also not cause any > problem except a poor picture. The ONLY lens I am not sure about as I have > not had one to check is the old collapsible 90/4 Elmar. It extended quite a > bit into the camera when collapsed. As I've noted earlier, SA 21's and the > 15/8 Hologon can also be mounted without damaging anything. Banging the > protruding parts into the sides of the cavity is of course not recommended. > > This is easy to check. Get a piece of paper and measure the distance from > the camera flange to the shutter and also the diameter of the available > opening. Now check this against the protrusion of the collapsed lens, and > the diameter of the protruding pieces. > > The new macro Elmar cannot cause any problems as there is no part of the > lens which protrudes behind the foussing cam when the lens is collapsed. > > Henning > > > On 2012-01-14, at 7:53 AM, John Collier wrote: > > > I double-checked with the technical chap(ette)s from Leica NJ and the > late model 50/2.8 (1995 and on) can be used with impunity. With the > exception of the recent 90/4 macro, which also can be used without > trepidation, all other collapsible lenses should only be used fully > extended and never collapsed while mounted on an M8/9. > > > > John > > > > Robert wrote: > > > >> I have a modern Elmar 50 2.8 and an M8. I never tried lens and camera > together, so out of curiosity, I mounted it just now and took a picture. > There was no problem collapsing it. And it doesn't seem to bottom out > against the shutter blades. Although I didn't have the nerve to put it to > the ultimate test by taking a picture with the collapsed lens. > >> > >> The Elmar I have is 6 bit coded from the factory, so it must be ok to > use with an M8 or M9. > >> > >> John wrote: > >> > >> In the instruction manual it states that no collapsible lenses can be > collapsed on the M8 with the exception of the 90/4 "macro". Just double > checking that there is no way to collapse the modern 50/2.8? When the CL > and M5 were introduced, you just had to put a certain width of tape on the > barrel to limit how far the lens collapsed. Is this possible with the > modern 50/2.8 and a M8/9? > > > > _______________________________________________ > > Leica Users Group. > > See http://leica-users.org/mailman/listinfo/lug for more information > > > > > Henning Wulff > henningw at archiphoto.com > > > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >