Archived posting to the Leica Users Group, 1999/05/14

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Subject: Re: [Leica] Erwin Qualifications
From: Lucien <lucien@ubi.edu>
Date: Sat, 15 May 1999 00:34:52 +0100

DonjR43198@aol.com wrote:

> The scientific method used by BASS is outlined in the BASS reports filling
> the entirety of page 3 in the M report and page 4 of the R report regarding
> the use of the MTF method of determining brilliance and sharpness.  At one
> time both of these nice reports were available from Leica USA.

And I wrote:

> BAS don't look so independent after all.
> Now, I agree with what they say about the Leica lenses in those tests.

The problem with the scientific BAS test, is that they were not
afraid to give 110/100  (yes) to the Leica APO SUMMICRON 2/180mm.
More than the maximum.
Really scientific!

And they gave the same result (100/100) to the APO-MACRO-ELMARIT 2,8/100m
without and WITH the APO-Extender 2X.
Wow!
I own the 100/2,8 and the APO-2X, and together they are outstanding,
but I don't think that the quality is equal on a scientific base.

Now that we have the APO SUMMICRON-M 2/90mm, which according
to Leica is even better, if not the best Leica lens ever made, how much will
they give?
150/100  ??
;-)

Lucien