Archived posting to the Leica Users Group, 2000/02/19

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

Subject: Re: [Leica] FS: 35 1.4 aspherical (1st ver)
From: Lucien <director@ubi.edu>
Date: Sat, 19 Feb 2000 18:12:45 +0100

Austin Franklin wrote:

> And I quote:
>
> "The first Summilux 35mm ASPH possessed two aspheric surfaces, polished
> with the normal technology available. It had 9 elements and had a limited
> production run of 2000 lenses at a price in 1990/91 that made Leica lovers
> faint. In 1994 The second version has been inroduced, now as a normal
> production lens. Still 9 lenselements, but a different design (different
> surface and different technique, pressed). pressing is cheaper than
> polishing, but the change from two to one surface has been explained by
> Zeiss, who maintain that two aspherics generate more problems than they
> solve. Leica now seems to agree.

Austin,

All I can say, and I know what I'm talking about, is that Leica was able to
produce
a 35/1,4 Asph with one aspheric element as good as the 35/1,4 Aspherical with
two.

Lucien