18th May 2014, 11:45 AM
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Friend
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Join Date: Dec 2011
Location: Southend on Sea, Essex, England, UK
Posts: 3,800
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Enlarged copy negative with reversal process link
And here is a link to the article talked about some time ago now:
http://unblinkingeye.com/Articles/NbyR/nbyr.html
Terry S
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