Purple/Green fringing caused by multicoating???

Started Jun 20, 2012 | Discussions thread
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SRT201
SRT201 Senior Member • Posts: 2,275
Purple/Green fringing caused by multicoating???

Interesting info I stumbled upon while looking up info on coatings used on 60's era lenses. This is from the astronomy community but hey lenses are lenses to significant degree. I have always wondered about purple and green fringing and assumed these aberrations were evidence of lousy lenses and possibly bad coatings. Go figure... it's the multi-coatings that cause fringing! Single coated lenses can actually be better for specific situations!

Needless to say there are better and worse coatings but the info is very interesting.

Interesting tidbit... multi-coating was invented in 1935?

http://www.jersey-mall.com/tpo/pages/coatings.htm

http://www.cloudynights.com/ubbarchive/showflat.php/Cat/0/Number/1960205/page/236/view/collapsed/sb/2/o/all

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