Archived posting to the Leica Users Group, 1997/08/14

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Subject: Re: Summilux 80 f1.4/90 f2 "cron"
From: Pascal <cyberdog@ibm.net>
Date: Thu, 14 Aug 97 21:25:29 +0200

>Jay Coleman,
>
(snip)
  Per the BAS charts, sharpness for the 90 
>f2 (
>at f2 ) is slightly down ( contrast is great ) ; however, sharpness & 
>contrast
>for the 80 f1.4 ( at f2 ) are not computed. It's hard to extrapolate it's f2
>performance as the curves are only given for f1.4, f4, & f8! 
>
>Surely, there's a LugNut out there who knows the answer :~)!
>
>Tom D. 
>
>
Tom,

I have never seen these BAS tests of R lenses. How did you obtain them? 
What did they say about the Summilux-R 80mm f/1.4? Thanks.

Pascal


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