Archived posting to the Leica Users Group, 1997/08/01

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Subject: Re: Flare problems w/S'cron 50 collapsible
From: "Jim Bielecki" <jbieleck@northland.lib.mi.us>
Date: Fri, 1 Aug 1997 20:27:04 -0500

> From: Jim Brick <jim@brick.org>
> Date: Thu, 31 Jul 1997 12:42:41 -0700
> Subject: Re: Flare problems w/S'cron 50 collaps... help?
> 
> At 08:18 AM 7/31/97 -0500, you wrote:
> >i recently (30 rolls) started using summ. 2.0 #1234417 50mm collaps.
with
> >vented shade 12585H instead of my old reliable dual range for the
> >compactness and novelty of new lens.
> >
> >i'm getting more flare than ever in situations that i don't recall
having
> >problems with; backlit stuff, late afternoon sun etc.
> >
> >never had probs. w/elmar 50 collaps either, but the rotating f's are a
> >bother and like 2.0 (both work well w/Sooky-M, which replaces the dual
> >range and the package fits so well in an old army bag)
> >
> >so, what's with the flare?  anyone find this lens touchy?
> >
> >comments much appreciated,
> >Steven Blutter  (an M-3 & CL devotee)

My 50mm collapsible Summicron (#1234208) is somewhat soft wide open, but
improves immensly at F2.8 or so.  Do check for a fogged element.  Mine
required a thorough cleaning by John Van Stelten before performance
improved to it's current general high level.