Archived posting to the Leica Users Group, 2002/03/20

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Subject: RE: [Leica] Re: Lenses
From: "B. D. Colen" <bdcolen@earthlink.net>
Date: Wed, 20 Mar 2002 14:02:40 -0500

If only they performed such rigorous QC on outgoing materials - such as
their cameras and lenses. ;-)

JHMO

B. D.

- -----Original Message-----
From: owner-leica-users@mejac.palo-alto.ca.us
[mailto:owner-leica-users@mejac.palo-alto.ca.us]On Behalf Of Jim Brick
Sent: Wednesday, March 20, 2002 12:38 PM
To: leica-users@mejac.palo-alto.ca.us; leica-users@mejac.palo-alto.ca.us
Subject: [Leica] Re: Lenses


At 12:04 PM 3/20/2002 -0500, Dr. Elliot Puritz wrote:
>I would be very interested in seeing what Erwin says about Leica glass
being
>obtained from different sources, and the coatings being modified  according
>to the properties of the glass.  In his book Erwin is very clear about the
>quality control that Leica uses in the manufacture of their lenses, and the
>pains that they take to insure that the glass used is of such a nature as
to
>assure that the computer design of the lens is in fact what is achieved in
>the final result.  If the glass is different from one "batch" of lenses to
>another ( naturally of the same type, e.g., the 50 summilux for example )
>then the final result might not be consistent.  Anyone going to Solms soon
>for one of the Leica courses?  Would be a great question to ask at the
>factory.
>
>Elliot



I suspect that, like all "good" manufacturing companies, Leica performs
rigorous QC on incoming materials, including glass.

JMHO,

Jim

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