Archived posting to the Leica Users Group, 1996/07/24

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To: leica-users@mejac.palo-alto.ca.us
Subject: 90mm confusion
From: DFeldman@aol.com
Date: Thu, 25 Jul 1996 01:42:23 -0400

Someone, I can't remember who, posted a table showing maximum f-stops for
focusing accurately on an m2,m6 etc.

The table showed for a 90mm lens on a M6 a f-stop of 2.1.

My question, if you can't focus a 90mm summicron accurately wide open, then
why do they make the lens - it doesn't make sense to me.

Should I consider trading my summicron (I have noticed that I have difficulty
focusing it) for an elmarit, it would be lighter and smaller!

David Feldman