Re: [Leica] 50 summicron and Canadian lenses

["Bruce R. Slomovitz" <brslomo@erols.com>]

You bring up a point or question which has concerned me.  Several months ago
I was having a problem with a Nikon 50mm f1.2 lens which I dearly love.  The
aperture ring was very hard to turn.  I took the lens to Strauss
Phototechnical Services in Washington, D.C.  When I got it back, the problem
had been cured, but In noticed in looking through the lens that the exposed
edge of one of the blades was longer (at certain apertures only) than the
others.  In other words, the apertures in question were no longer "round" or
perhaps I should say no longer symmetrical.  Is this or should this be a
cause of concern on any lens?

Bruce S.
- -----Original Message-----
From: Robert G. Stevens <robsteve@istar.ca>
To: leica-users@mejac.palo-alto.ca.us <leica-users@mejac.palo-alto.ca.us>
Date: Saturday, June 20, 1998 12:01 AM
Subject: Re: [Leica] 50 summicron and Canadian lenses


>Having both Canadian and German R and M lenses, but not of the same model,
>I have come to the conclusion I like the build quality of the Canadian
>lenses better.  The Canadian lenses I have all seem to have gorgeous glass,
>apertures that form round circles with many blades (10 blades), and smooth
>operation.  I do not have the equivalent german lenses to compare them to,
>but the German and Japaneses lenses of Leica that I do have do not have
>that more circular, more blade aperture (6 Blades) and have a different
>look to the glass.
>
>I must admit that two of the Canadian lenses are the 180 APO 3.4, and the
>Noctilux which probably have the rare glass in them anyways.  The
>Tele-Elmarit and the 35mm Summicron for the M are Canadian as well and seem
>to have a different build quality in comparison to say my new 50mm Elmar.
>The elmar aperture does not appear round and has fewer blades in it than
>the other lenses from Canada.
>
>This difference may be that the Canadian lenses are of older design and
>still uses the build tecniques of the sixties and seventies.  The aperture
>blade count may not make a difference anyways, and it probably isn't fair
>compairing a $3,000 Noctilux to a $1,000 Elmar.  The elmar takes the better
>pictures in brighter light anyways.
>
>
>Regards,
>
>Robert Stevens
>
>
>At 10:57 PM 6/19/98 -0400, you wrote:
>>
>>On 20-Jun-98 AJSymi@aol.com wrote:
>>> Michael wrote:
>>>
>>> << someone was selling one and made a point of saying it was
>>>  candian, if they are made in canada, when was the switch? >>
>>>
>>> Michael:
>>>
>>> I have the latest 50mm Summicron with the built-in lens hood and its
>made in
>>> Germany...and its a sweet lens!
>>>
>>> Arturo
>>Where the lens that were/are made in canada made at a specific time or
>>throughout the production run, if i pay leica prices i would just rather
have
>>the german lens.
>>
>>--
>>Michael Garmisa <elmar@webreach.com>
>>19-Jun-98 22:56:15
>>
>>
>>
>>
>