Archived posting to the Leica Users Group, 1999/07/08

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Subject: RE:[Leica]35 Summilux Asph compared to Summicrons
From: Dan S <>
Date: Thu, 08 Jul 1999 16:22:24 GMT

From my experiences with the lens I would say it is a Summicron ASPH with an 
extra stop.  The performance at 1.4 is notably better than the old Summicron 
at f 2.0, and comparable to the new ASPH Summicron at   f 2.0.

Both ASPH lenses are superb, even at full aperture.  The old Summicron is 
poor at full aperture, but improves dramatically at f2.8, to nearly perfect 
at f 3.5.

The primary defect in the old model is with edge quality from f2.0-f2.8, and 
light fall off and flare at f 2.0.  I have been properly flamed for my 
opinions of the old Summicron in the past and will no doubt feel the heat 

>In Erwin's comparison of the 35 Asph. lenses and the last 35 Summicron-M he
>*It seems as if the Summilux-M ASPH 35mm is a Summicron-M 35mm with one 
>stop more.*
>Any comments?

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