Archived posting to the Leica Users Group, 2000/09/17

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Subject: Re: [Leica] Lens haze-35mm Summicron
From: Vick Ko <vick.ko@sympatico.ca>
Date: Sun, 17 Sep 2000 20:19:05 -0400
References: <001c01c020ff$4e934ec0$02000003@dnai.com>

If the metal is alloyed into the lens, John is probably correct - the
glass is literally changing its opacity (kind of like cataracts).

Here's an out-of-the blue suggestion!  Is the haze uniform?  If so,
maybe compensate for it using filters.

How much did you pay for it?  If it isn't outrageous, maybe I can
offer to buy it from you.  No tricks up my sleeve to restore it,
but I'd be interested in seeing what's inside.

...Vick


Roland Smith wrote:

> I purchased a 35mm Summicron with eyes on Ebay that was correctly
> represented to contain haze.   The condition of the lens was not overstated.
>
> Upon its receipt, I sent it to a camera repair that has successfully cla'd
> other Leitz lenses for me.   It wouldn't clean.
>
> I sent it to John Van Stelton who indicated that the glass used in this lens
> has metal in it and will oxidize and is not cleanable.  The two elements
> with the problem are the ones on each side of the aperture diaphragm.  He
> cannot eliminate the haze.
>
> While I greatly respect John's professional opinion, I am curious to know if
> anyone on this site has any suggestions before I scrap the lens.
>
> Roland Smith
> roland@dnai.com

In reply to: Message from "Roland Smith" <roland@dnai.com> ([Leica] Lens haze-35mm Summicron)