Archived posting to the Leica Users Group, 2000/07/17

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Subject: RE: [Leica] Another (new) 15mm for Leica M (39mm) , the Panomigon 15mm f22
From: "Jason Hall" <JASON@jbhall.freeserve.co.uk>
Date: Mon, 17 Jul 2000 15:02:15 +0100
References: <200007170502.WAA14742@mejac.palo-alto.ca.us>
 
> From: "Henning J. Wulff" <henningw@archiphoto.com>
> >> An effective aperture (with ACV, whatever that
is!) of f/22, and at best
> >> geometric aperture of f/11 doesn't bode well for
either practicality nor
> >> optical performance.
>
> Sounds like a dithered center filter (the dots MUST
be denser in the center
> to work, right?).


Or a zone plate??

Jason Hall