Archived posting to the Leica Users Group, 2004/11/19

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Subject: [Leica] thin rim of blackening around a lens?
From: corkflor at iol.ie (Alex Hurst)
Date: Fri Nov 19 05:14:47 2004
References: <BAY19-DAV10D75E4B355A3877AE50F5EDC30@phx.gbl>

Eric asked:

>I just bought a summaron 35mm 2.8 - was advertised as 'bargain' condition.
>
>There is an irregular very thin rim of blackening around the periphery of
>one ofthe rearward elements.
>I have never seen this before on a lens.
>
>Anyone know what could cause this?
>Fungus? Coating pulling off an element?
>

Could be the paint flaking off the edge of the element. When Malcolm 
Taylor (blessed be his name) completely overhauled my 50/1.5 LTM 
Summarit recently, he re-painted the edges of the elements with matte 
black.

I'd assume the elements of the Summaron were originally painted in 
the same way.

As always, try the lens out and see if the fault has any effect on 
actual performance.

Best

Alex


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Replies: Reply from leica_korenman at hotmail.com (leica) ([Leica] thin rim of blackening around a lens?)
In reply to: Message from leica_korenman at hotmail.com (eric) ([Leica] thin rim of blackening around a lens?)