Archived posting to the Leica Users Group, 2011/12/03

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

Subject: [Leica] Infinity Focus off on 50 Summicron
From: photo.forrest at earthlink.net (Phil Forrest)
Date: Sun, 4 Dec 2011 00:22:38 -0500
References: <CAN4TZQ6XEY+KQ3YZ8XJKzGv0j7ZjuRhgPnZtZjN_a_qEnzyOrA@mail.gmail.com> <BLU162-W242C75BBD314B0287FB5938CB60@phx.gbl> <015301ccb133$dba342e0$92e9c8a0$@earthlink.net> <BLU0-SMTP27529BCA49128C437003198CB60@phx.gbl> <CAN4TZQ53frsSiEriZVEjd-fgGkFqf1j9NDWtRXqTwaVpxLNFgA@mail.gmail.com> <CAN4TZQ6-9b4XoskavUT=_4OXs6v5KCV=174MAyOesj-rxpXoGw@mail.gmail.com>

It IS a gorgeous night out. Lots of stars and a clear high pressure
sky. Gonna be chilly.

Make sure you remove those glass/air interfaces between you and the
star (your window)

Is the cam follower on your MP dirty or stuck or wobbly? Then, is the
cam surface on the 50 'cron dirty at all? Is your MP the same
magnification? I have a theory but it's a longshot. Is your Cron
mounting the same way on the MP? If the lugs and the locking tab are
just a mm or two off, the cut surface in the lens cam would be rotated
a bit clockwise (looking towards the camera front) and the cam follower
would then be riding on the raw surface into which the cam angle is
ground. I had this happen once with my rigid 'Cron but it was on a
significantly older camera so the lugs were worn and the locking tab
didn't engage as positively. This is just a thought. 
What you need is an M9 to see if your lens actually focuses to infinity
where it's supposed to.  ;)

Good luck.

Phil Forrest



On Sun, 4 Dec 2011 00:12:48 -0500
Chris Saganich <csaganich at gmail.com> wrote:

> I couldn't wait till morning since a nice bright star was shining
> into my bedroom window.  I tried 4 lenses on two bodies, MP and M2.
> On the MP only the 50 Summicron was short of infinity.  On the M2
> they all focused to infinity the 50 Summicron included.  Wierd.
> 
> On Sat, Dec 3, 2011 at 11:43 PM, Chris Saganich <csaganich at gmail.com>
> wrote:
> 
> > Thanks,  I'll try 'em on the M2 in the morning.
> >
> >
> > On Fri, Dec 2, 2011 at 4:05 PM, Vick Ko <vick.ko at sympatico.ca>
> > wrote:
> >
> >> I actually don't know how to.
> >>
> >> If it was a multiple thread helix, and it was "one thread off",
> >> you'd have to take it apart and move it one thread over.
> >>
> >> But if it is a finer adjustment, I don't know.  I'd have to take
> >> the focusing mount off and examine its construction for fine
> >> adjustments.
> >>
> >> Vick
> >>
> >>
> >>
> >>
> >> On 12/2/2011 3:49 PM, Frank Filippone wrote:
> >>
> >>> Vick.... That brings up a good question.. how do you adjust the
> >>> lens to move
> >>> the RF cam relative to the lens?
> >>>
> >>> Is this an easy fix or does it require major surgery?
> >>>
> >>> Frank Filippone, screwdriver in hand.....
> >>> Red735i at earthlink.net
> >>>
> >>> Sounds like the cam needs to go just a bit further into the body.
> >>>
> >>> Vick
> >>>
> >>
> >>
> >> ______________________________**_________________
> >> Leica Users Group.
> >> See
> >> http://leica-users.org/**mailman/listinfo/lug<http://leica-users.org/mailman/listinfo/lug>for
> >> more information
> >>
> >
> >
> >
> > --
> > Chris Saganich
> > www.imagebrooklyn.com
> >
> >
> >
> 
> 



Replies: Reply from csaganich at gmail.com (Chris Saganich) ([Leica] Infinity Focus off on 50 Summicron)
In reply to: Message from csaganich at gmail.com (Chris Saganich) ([Leica] Infinity Focus off on 50 Summicron)
Message from vick.ko at sympatico.ca (vick.ko at sympatico.ca) ([Leica] Infinity Focus off on 50 Summicron)
Message from red735i at earthlink.net (Frank Filippone) ([Leica] Infinity Focus off on 50 Summicron)
Message from vick.ko at sympatico.ca (Vick Ko) ([Leica] Infinity Focus off on 50 Summicron)
Message from csaganich at gmail.com (Chris Saganich) ([Leica] Infinity Focus off on 50 Summicron)
Message from csaganich at gmail.com (Chris Saganich) ([Leica] Infinity Focus off on 50 Summicron)