[Leica] Screw Mount to Leica M Bayonet Adapter problems -- not at all typical

[masonster at gmail.com (David Mason)]

I have the alignment "issue" and the sticking adaptors. Ah well, I
love the CV 25mm enough to not care - what a great, "sleeper" lens
that is.


Dave

On Sat, 25 Dec 2004 21:32:59 +0000, jnswickard@comcast.net
<jnswickard@comcast.net> wrote:
> Steve,
> I do not have Frank's problem.  However, I have noticed that screwmount 
> lenses do line up at about 1 O'Clock on the M adapter.  This is mostly a 
> looks issue but I do have some concerns re the 15 and 12 mm heliars.  Dan 
> Goldberg (DAG) seems to think that this is about normal.  Any thoughts?
> Jack Swickard
> 
> -------------- Original message --------------
> 
> > Frank,
> >
> > do you really think that Leica would design and market a Leica screw 
> > mount to
> > Leica M bayonet adapter system which didn't work flawlessly ? Mr. K is 
> > only
> > using the system which Leica designed and invented in the 1950's.
> >
> > The troubles you are having with the adapters are in no way normal. 
> > Something
> > is wrong somewhere with 1) your technique 2) the adapter 3) the camera 
> > body
> > or 4) any combination of 1 to 3.
> >
> > A. hand tighten the adapter on screw mount lens
> > B. mount the adapter and lens together on the M mount. this will tighten 
> > up the
> > adapter to the lens. give the lens a gentle turn to the right towards the
> > rewind lever / knob just to be sure.
> > C. after that, if all is working right, the adapter will stick to the 
> > lens like
> > glue.
> >
> > D. to remove the adapter/lens combination depress the lens release and 
> > remove
> > like you would any other M lens
> > E. to remove the adapter from the lens, forget the rear lens cap adapter 
> > wrench
> > concept. Use the M body as a lens wrench instead. insert the 
> > adapter/lens into
> > the M camera body, and turn the lens to the left towards the advance 
> > lever. the
> > lens will unscrew and the adapter will fall off in your hand since you 
> > did not
> > lock it into place in the camera mount.
> >
> > All of the above work should work easily and flawlessly. If you are 
> > having
> > trouble with it, 1st tighten the lens a bit more on the adapter, then try
> > replacing the adapter. last resort is having the camera mount looked at 
> > by a
> > good Leica tech. in absolutely no way should the adapters become stuck 
> > on the
> > camera.
> >
> > Mr. K's logic is that screw mount lenses offer far more versatility to 
> > the buyer
> > than M mount lenses, since screw mount lenses work perfectly on both 
> > screw mount
> > and M bodies, but M mount lenses only work on M mount bodies. Leica was 
> > not
> > doing you a favor by switching over to all M mount lenses in the 1960's. 
> > It
> > was a marketing ploy to force buyers to buy M bodies in order to take 
> > advantage
> > of the newer optical designs in the M only lens mounts. The M mount 
> > cameras
> > initially encountered a big back lash in the 1950's about being too 
> > large and
> > heavy compared to the screw mount Leicas. The M mount only lens strategy 
> > was a
> > way to force even screw mount diehards to switch to the new M camera 
> > bodies --
> > and of course increase M body sales.
> >
> > Frankly Frank, I was really surprised when I read about your adapter 
> > problems.
> > I have never personally encountered such difficulties. But I am glad you
> > brought it up.
> >
> > Stephen Gandy
> >
> > Frank Filippone wrote:
> >
> > > I think it is pretty obvious that having an adapter is "silly". It is a
> > > piece of equipment that is not really necessary compared to machining 
> > > a M
> > > rear lens mount on the LTM lenses, or even permanently gluing one on) 
> > > , it
> > > is inconvenient, and it sticks to the bodies, and must, at times, be 
> > > removed
> > > using the equivalent of a wrench ( the back of CERTAIN Leica M mount 
> > > back
> > > caps). Remember, these are M cameras with M mounts, not M cameras with
> > > built in LTM adapters on front.
> > >
> > > I realize that you represent the CV company as a distributor of 
> > > theirs. You
> > > have done an excellent job of promoting their products. But there 
> > > remains
> > > a practical issue of consumer friendliness. LTM lenses with an adapter 
> > > are
> > > not consumer friendly to M users. Useable, yes, but not friendly.
> > >
> > > Personally, I would pay extra NOT to have to use the adapters. I bet 
> > > there
> > > are others out there that feel the same way......
> > >
> > > Feel free to chime in now, gang...... CV Lenses with M mounts are 
> > > preferred
> > > over LTM lenses with M adapters......for use on a M camera.
> > >
> > > Frank Filippone
> > > red735i@earthlink.net
> > >
> > > _______________________________________________
> > > Leica Users Group.
> > > See http://leica-users.org/mailman/listinfo/lug for more information
> >
> >
> > _______________________________________________
> > Leica Users Group.
> > See http://leica-users.org/mailman/listinfo/lug for more information
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