[Leica] Collapsible lenses on the M8/9

[j2m46 at hotmail.fr (Jean-Michel Mertz)]

I use the collapsible Elmar 2.8 / 50 (the modern one) quite regularly and I 
find it makes excellent pictures with the M8 probably because of an adequate 
balance with the captor - my guess. No problem with retracting the 
lens.Jean-Michel
 > From: hopsternew at gmail.com
> Date: Sun, 15 Jan 2012 15:18:17 +1000
> To: lug at leica-users.org
> Subject: Re: [Leica] Collapsible lenses on the M8/9
> 
> 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 or (after unlocking) as it is withdrawn.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
> >
> 
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