Archived posting to the Leica Users Group, 1998/02/09

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Subject: Re: [Leica] Aspherical Summilux versions
From: Erwin Puts <imxputs@knoware.nl>
Date: Mon, 9 Feb 1998 22:52:55 +0100

>Anybody out there know of any tests comparing the original 35mm Aspherical
>Summilux (with two hand-ground aspherical elements) with the current 35mm
>Summilux Asph. (with one moulded aspherical element)?
>Never mind cost, collectability and the nicer focusing ring - what about
>optical performance?

The first version of the ASPH and the second one are for all intents and
purposes identical:
differences: the second one has higher contrast at full aperture.
the first one is slightly better at f/5,6 only visible with very low speed
B&W film
Erwin