[Leica] Collapsible lenses on the M8/9

[mark at rabinergroup.com (Mark Rabiner)]

But I think its working the way its supposed to be working..
And did work for many decades....
Don't need no stinkin o rings.

But grateful for any advice.

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


> From: curtis bliss <curtisbliss at yahoo.com>
> Reply-To: Leica Users Group <lug at leica-users.org>
> Date: Sun, 15 Jan 2012 16:32:28 -0800 (PST)
> To: Leica Users Group <lug at leica-users.org>
> Subject: Re: [Leica] Collapsible lenses on the M8/9
> 
> 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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> 
> _______________________________________________
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