Archived posting to the Leica Users Group, 2001/04/10

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Subject: Re: [Leica] A Question re Summicron 35mm pre-ASPH
From: Dennis Painter <dwp@deltanet.com>
Date: Tue, 10 Apr 2001 22:57:59 -0700
References: <3AD39F13.41492711@earthlink.net>
 
Shel Belinkoff wrote:

> I just took delivery of this lens and noticed that, when wide open,
> the aperture blades are evident, as if they've not opened 100%.
> I've not seen this on any of the 40+/- lenses that I own, or on any
> of the lenses I've ever examined.  I have not, however, ever seen a
> pre-ASPH, 35mm S'cron before.  Is this normal or is there a problem
> with the lens?  I'll try to put a picture up later.

Normal if looking from the front. Try looking into the rear element.

I think this is just some optical effect. Never noticed it before.

Dennis
In reply to: Message from Shel Belinkoff <belinkoff@earthlink.net> ([Leica] A Question re Summicron 35mm pre-ASPH)