A while ago i started a thread about the coating of lenses and an odd visual effect i observed:
http://www.optiboard.com/forums/show...reeForm-lenses

While researching the topic i found this interesting article which i wanted to share (the link is for the whole MAFO magazine, the article is on pages 18 to 23):
http://www.calameo.com/read/000126065ab55b67d0a6f

Best regards,
Nikolay Angelov