Archived posting to the Leica Users Group, 2001/08/08

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Subject: Re: [Leica] Re: 400mm f/6.8 Macro-Telyt-R (180mm f/2.8 Apo-Macro?)
From: Doug Herr <>
Date: 8 Aug 2001 13:31:04 -0700

On Wed, 08 August 2001, Jeff Moore wrote:

> Ooh.  Now I'm really curious about how extension tubes and the 180/2.8
> Apo would get on.  Anyone tried *that*?
> I have this kind of sinking feeling that because the lens is one of
> those fancy internal-focusing designs, it's well-corrected within its
> proper range but less amenable than a more classic design to just
> being moved forward wholesale to focus even closer.
I suspect that's why Leica doesn't recommend extension tubes with the 100 APO-Macro.

Doug Herr
Birdman of Sacramento
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