Archived posting to the Leica Users Group, 2012/01/15

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Subject: [Leica] Collapsible lenses on the M8/9
From: curtisbliss at yahoo.com (CB)
Date: Sun, 15 Jan 2012 16:32:28 -0800 (PST)
References: <AB3F375A-E428-4086-988C-D70A7424B1EC@shaw.ca> <CB38D83F.19039%mark@rabinergroup.com>

Go to the Hardware store and get some fat, black rubber "O" rings that are a 
snug fit around the lens.? Then it won't collapse all the way!?? I used to 
do this when I had a Bessa R2.


From: Mark Rabiner <mark at rabinergroup.com>
To: Leica Users Group <lug at leica-users.org> 
Sent: Sunday, January 15, 2012 6:23 PM
Subject: Re: [Leica] Collapsible lenses on the M8/9

I screw in my 50 3.5 Elmar into my IIIF every day before breakfast with
impunity. Oh! And its collapsed.
You really think I'm? going to extend it before I screw it on!?!?!
That just seems a bit odd and awkward to me.

-- 
Mark R.
http://gallery.leica-users.org/v/lugalrabs/winterdays/


> From: John Collier <jbcollier at shaw.ca>
> Reply-To: Leica Users Group <lug at leica-users.org>
> Date: Sun, 15 Jan 2012 17:17:47 -0700
> To: Leica Users Group <lug at leica-users.org>
> Subject: Re: [Leica] Collapsible lenses on the M8/9
> 
> Thanks Henning. In the manual, it hints at terrible, but unspecified,
> catastrophes that will surely result. Didn't make sense at the time either 
> but
> I wasn't about to try and then says oops and hope for the warranty to cover
> it.
> 
> Even a film M has enough bits and bobs that one shouldn't mount a 
> collapsible
> lens unless it is extended.
> 
> John
> 
> On 2012-01-14, at 7:45 PM, Henning Wulff 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
> 
> 
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information



_______________________________________________
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Replies: Reply from mark at rabinergroup.com (Mark Rabiner) ([Leica] Collapsible lenses on the M8/9)
In reply to: Message from jbcollier at shaw.ca (John Collier) ([Leica] Collapsible lenses on the M8/9)
Message from mark at rabinergroup.com (Mark Rabiner) ([Leica] Collapsible lenses on the M8/9)