Archived posting to the Leica Users Group, 1996/10/09

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To: leica-users@mejac.palo-alto.ca.us
Subject: Re: residual-aberration technique & leitz early history
From: Eric Welch <ewelch@cdsnet.net>
Date: Wed, 09 Oct 1996 00:43:58 -0700

At 07:31 PM 10/8/96 -0400, you wrote:

>Your citing of figures from the 1930's is quite instructive, but not on
>point.  Berek's concept was developed in the early 1920's, when Leitz had no
>background, at all, as anything but a microscope/binocular company.  Please
>keep the issue in perspective:  Leitz, by the 1930's, WAS a major player in
>camera technology.  They were not so in 1922.

True, Marc, but doesn't that sort of ignore the point that microscopes need
highly corrected lenses too? They have apo designs, and need lots of
correction to. Aren't you assuming that's not the case back then? They'd
been making microscopes for almost 90 years by then.

===========
Eric Welch
Grants Pass, OR