Archived posting to the Leica Users Group, 1997/10/08

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Subject: Re: 35-70mm. R f4.0 ASPH Zoom
From: "Jacques Bilinski" <jbilin@axionet.com>
Date: Wed, 8 Oct 1997 18:37:34 -0700

> 
> 
> Is that a glass Aspheric element (like in 21/2,8, 24/2,8, 35/2, 35/1,4
ASPH
> )
> or a plastic on glass Aspheric element like in some japanese zooms ??
> 
> Lucien
 
The press release says: "One of them is also aspherically ground and
polished according to an innovative technique which Leica Camera helped to
develop". 
 
Is plastic ever ground and polished, or is it always moulded? The glass
Aspheric elements on the 21mm ... 35mm Leica M lenses are moulded, not
ground. Correct?  
How about the 50mm ASPH Noctilux?