Archived posting to the Leica Users Group, 1997/10/01

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Subject: Re: Summitar / Iris?
From: Marc James Small <msmall@roanoke.infi.net>
Date: Wed, 01 Oct 1997 09:31:04 -0400

At 01:47 AM 10/1/97 -0400, Marvin Moss wrote:
> 
> I don't know what Barney means by "funky f-stops" but I have always
> wondered what the reason was for using double iris blades on some
> Summitars and hexagon (?) on others and even a convex shaped iris
> in addition to the normal issue. Any ideas would be appreciated.

Oh, I've owned a couple with the double iris.  I can think of no optical or
mechanical reason for this set-up, but these are rare enough to have a lot
of collector interest.

Over to you, Erwin!

Marc


Marc James Small
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