Archived posting to the Leica Users Group, 2004/09/25

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Subject: [Leica] Two sets of aperture blades?
From: aaron.sandler at duke.edu (Aaron Sandler)
Date: Sat Sep 25 19:20:45 2004
References: <1db.209bdec9.2dc92eb2@aol.com> <1db.209bdec9.2dc92eb2@aol.com>
 
The second set must be to decrease finder flare.  There's a little known 
light path from just behind the lens mount up into the finder.  ;)

Anyone know how much Leica charges to retrofit the second set in a 
single-aperture lens?

-Aaron

PS--Please nobody take me seriously.

At 01:55 PM 5/4/2004, you wrote:

>OK, am I on drugs or does Leica use two sets of aperture blades? It seems 
>on many of my lenses, that looking from the front, there is one set (main 
>set?) that closes down, but from the rear, there's another set that 
>gradually closes down and catches up at f/22 or so. It's very odd.
>
>Is this to smooth out bokeh? Or am I seeing an illusion?
>
>Karen
In reply to: Message from SonC at aol.com (SonC@aol.com) ([Leica] More Sababurg)
Message from mail at gpsy.com (Karen Nakamura) ([Leica] Two sets of aperture blades?)