Archived posting to the Leica Users Group, 1998/12/23

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Subject: [Leica] 90mm Lens Sharpness
From: RedDrake@aol.com
Date: Wed, 23 Dec 1998 10:15:19 EST

I was off yesterday, so I took my Leica M2 down to one of my favorite spots
and took some pictures at different f stops and shutter speeds with my 
lenses. Found out my 1/1000 and 1/500 shutter speeds had a peculiar
tapering off causing only part of the frame from being exposed, but that's
another story.

I was testing my early model 90mm f/2.8 Elmarit (not the tele) with M mount
against my late model 90mm f/4 screw mount + adapter. I expected the 2.8
to win, but it looks like to me the 90 f/4 Elmar is just a touch sharper. How
can this be?