[rollei_list] Re: Lens coatings and veiling flare.
- From: Marc James Small <marcsmall@xxxxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Wed, 08 Jul 2009 12:46:40 -0400
On 7/8/2009 10:52 AM, Ellestads wrote:
Please be careful cleaning interior surfaces of older coated lenses. Many of
theses lenses (including Leica) ued soft coatings on the inner elements.
Cleaning can reduce those coatings.
Drip coatings these were, to avoid infringing on the Zeiss patent on the
Smakula vacuum technology. That patent expired in 1960, so you are good
to go after that date.
Marc
--
msmall@xxxxxxxxxxxx
Cha robh bàs fir gun ghràs fir!
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