Archived posting to the Leica Users Group, 1996/09/30

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To: leica-users@mejac.palo-alto.ca.us
Subject: Re: New M 1:2.8/24 mm ASPH
From: Bert Keuken <bert.keuken@pi.net>
Date: Mon, 30 Sep 1996 19:39:59 +0200
Organization: Planet Internet
Posted-Date: Mon, 30 Sep 1996 20:42:30 +0200 (MET DST)
References: <199609291306.AA06192@Relay1.Austria.EU.net>

Hubert Nowotny wrote: 
> I feared it would be like that; somewhere hidden deep in my heart
> there is the secret wish to get aspherical faces grinded instead of
> moulded, but I know that I will be disappointed each time again. 
Dear Hubert,

Please take note that grinding aspherical lenses is *much* more 
expensive than high-precision blank moulding due to the large number of 
"rejects". It appears to be that grinding aspherical lenses is very 
cost-inefficient. That's why the S'lux-M 1.4/35 mm ASPHERICAL (with two 
aspherical ground surfaces, only 2000 made) is more expensive than the 
S'lux-M 1.4/35 mm ASPH. (with one moulded aspherical surface). I don't 
expect Leica to make ground aspherical lenses in the future.

Greetings, Bert

In reply to: Message from "Hubert Nowotny" <hubertn@mail.ctr.co.at> (Re: New M 1:2.8/24 mm ASPH)