Archived posting to the Leica Users Group, 2001/05/29

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Subject: Re: [Leica] Re: Cleaning Marks/ Recoating
From: "Aram Langhans" <>
Date: Tue, 29 May 2001 11:10:44 -0700

I am a bit confused.  I am new to Leica.  I use it because for years I heard
about their wonderful glass and coatings.  Does this mean that "anyone" can
duplicate the coating and have the lens turn out like new?  Is there nothing
special or proprietary about the coatings?


Date: Mon, 28 May 2001 14:21:28 EDT
Subject: Re: [Leica] Re: Cleaning Marks/ Recoating
Message-ID: <>

In a message dated 5/27/01 10:50:59 PM, writes:

>Some reputable experts suggest that if you have a lens recoated at Focal
>Point, it will be better than new (or at least as good).  Ken Ruth (another
>legendary repairman) told me that it's impossible to grind and recoat a
>without doing damage.
>I am, in short, confused.  Anyone have hard facts regarding this?

I am not an expert, and I have no hard facts, but....  I have a DR Summicron
that I bought cheap that had cleaning marks and or scratches on the front
element.  I sent it to John VanStelton at the Focal Point to be polished and
recoated.  Before he worked on it the lens was virtually unusable because of
flare.  When I got it back it looked like new and performs wonderfully.  The
difference is nothing short of amazing-flare is almost nonexistent.

Richard Wasserman