Could you help and share your opinion: dust or fungus?
Could you help and share your opinion: dust or fungus? Hello everyone! I would appreciate your thoughts. I received a lense and noticed that it has spots strangely gathered on one side of the rear inside part of the lense. I cannot see any visible webs, but since the spots are on one side mainly, I have doubts whether it is just a dust or an early stage of fungus? Many thanks!
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