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Today, I'm putting a couple of old lenses that I own out into the bright sunshine to treat fungus that's inside these lenses. One of these lenses is a vintage Nikkor lens that is NOT weather resistant.
Over the years, I've owned many lenses that had fungus inside; but when I reflect back on them, I just realized that none of my fungus lenses were rated as being weather resistant. None of the weather resistant lenses that I've owned ever had fungus inside of them.
Of course that's just my personal experience, but I would like to throw this out there and see what your experiences have been with fungus inside of lenses. Have you ever owned a "weather resistant" lens that had fungus in it? Is it even possible for a weather resistant lens to get fungus inside of it? Do you feel that if a lens is rated as being weather resistant that it is less likely to get fungus inside of it?