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Sigma APO 2.8/180mm macro. First results.
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PostPosted: Tue Aug 22, 2017 9:36 am    Post subject: Sigma APO 2.8/180mm macro. First results. Reply with quote
This 1990 Sigma is a typical victim of the Zen-coating. The glass-parts however still work as they were meant to work.

Some first pictures

Sympetrum vulgatum by Ouwesok, on Flickr

Araneus marmoreus by Ouwesok, on Flickr

Polygonia c-album by Ouwesok, on Flickr

Sympetrum vulgatum by Ouwesok, on Flickr


PostPosted: Tue Aug 22, 2017 1:43 pm    Post subject: Reply with quote
Like 1 small Like 1 small Like 1 small what do you mean by ZEN coating??


PostPosted: Tue Aug 22, 2017 3:56 pm    Post subject: Reply with quote
superb!
S.


PostPosted: Tue Aug 22, 2017 5:16 pm    Post subject: Reply with quote
kds315* wrote:
Like 1 small Like 1 small Like 1 small what do you mean by ZEN coating??


Just guessing here, but I think he's referring to the black rubberized (sort of) coating Sigma used on their lenses. Once the lens was a few years old, it would begin to flake off, basically making a big mess, and making the lens look ugly as well.
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