Archived posting to the Leica Users Group, 2000/05/18

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Subject: Re: 100 R Macro (was [Leica] 60 Macro Elmarit-R)
From: "Gerry Walden" <>
Date: Thu, 18 May 2000 21:44:41 +0100
References: <>

As a matter of interest Sigma use a lens in front of the main lens to
achieve 1:1 ratio with their 90mm macro lens.   And they have been known to
manufacture for Leica under Leica quality control.   Who knows!?


- ----- Original Message -----
From: Arthur Leyenberger <>
To: Leica Users Group <>
Sent: 18 May 2000 20:42
Subject: 100 R Macro (was [Leica] 60 Macro Elmarit-R)

> Ferrel Anderson wrote..
> <<my 100 APO Macro Elmarit-R lenses to be
> my best lenses.  The APO lens was the best for
> resolution, but we're talking about
> gilding the lilly here.  If I were reduced to one
> lens, I would keep the 60.>>
> Ferrel do you  or anyone know why does Leica use
> another lens, in front of the 100mm macro, to achive
> life size when other manufacturers use an
> extension tube to get to 1:1 ratio (life size) with
> their macro lenses?
> I've always thought the more glass (additional lenses,
> filters, etc.) you put in front of your prime lens,
> the more degraded the image will be. I guess Leica has
> a reason for doing it this way.
> .....Art in NJ, USA
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Replies: Reply from Mark Rabiner <> (Re: 100 R Macro (was [Leica] 60 Macro Elmarit-R))
In reply to: Message from Arthur Leyenberger <> (100 R Macro (was [Leica] 60 Macro Elmarit-R))