Archived posting to the Leica Users Group, 2001/02/22

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Subject: Re: [Leica] Voigtlander 90/3.5
From: Dr H L Lau <shllau@zdnetonebox.com>
Date: Fri, 23 Feb 2001 07:41:13 +0800
References: <200102221949.LAA09724@mejac.palo-alto.ca.us>
 
Tim,

They do not specify that glasses incorporating lanthanum oxide are used for this lens; they only say that glasses of extra-low
dispersion are used to achieve the "apo" quality. At 260g in weight and shortest focusing distance at 1 m, it is a handy lens to use. I didn't actually buy one, given the opportunity, because I've already had three Leica 90mm lenses in M mount (APO Summicron, Elmarit-M, and collapsible Elmar), which makes the addition of this Voigtlander lens superfluous, at least on monetary terms.

Horace Lau

>Date: Thu, 22 Feb 2001 20:28:42 +0100
>From: "Tim Spragens" <info@borderless-photos.com>
>Subject: Re: [Leica] Re: Is Voigtlander coming out with a 90 and/or 21?
>Message-ID: <3A95767A.16026.83F509@localhost>
>References:
>
>On 21 Feb 2001, at 8:53, Dr H L Lau wrote:
>
>> Apo-Lanthar 90/3.5
>
>Does this have Lanthanium glass, or are they just taking the name
>in vain?