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Dust, separation or fungi?

Started Oct 28, 2015 | Questions thread
dgumshu
dgumshu Veteran Member • Posts: 4,623
Re: Dust, separation or fungi?

Looks like fungus to me.  Fungi secretions will etch the glass coatings and you can't fix it.  If you just bought that lens, you may want to return it if you can.  I always check a lens with a flashlight before buying.  Good luck.

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