Archived posting to the Leica Users Group, 1997/10/05

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Subject: Re: 35-70mm. R f4.0 ASPH Zoom vs.35-70mm. R f3.5 Zoom
From: "Jacques Bilinski" <jbilin@axionet.com>
Date: Sun, 5 Oct 1997 19:29:54 -0700

> > 35-70mm. R f4.0  ASPH ??
> > 
> 
> Sorry, my mistake! Should be just 35-70 R f4.0. 

ASPH may not be part of the name but according to the Leica press release 
http://www.leica-camera.com/press/meldung/0297_02e.htm  this lens does have
an aspherical surface. 
Here is what it says about this lense's construction: "This optical
performance is achieved through eight elements, four of which consist of
highly refractive glass. One of them is also aspherically ground and
polished according to an innovative technique which Leica Camera helped to
develop. 
Through the precise and durable brass/aluminium mechanical elements, two
groups of lens elements are pushed against each other when the focal length
is adjusted, whereas only the front group is moved when the focusing is
adjusted. The focusing range extends to the close range of 60 cm, an
additional macro setting even enables photos to be taken as close as 26 cm.
This corresponds to a smallest object field of about 6.7 x 10.1 cm,
allowing frame-filling exposures of small objects and animals."