Looks like some sort of fungus or just dust that made its way in. Might make some cool lens flare to go a long with the already cool Helios effect. I’d say test the lens first before breaking it open to try and remove the debris.
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Lens fungus?
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I’ve had the lens for like 4 years and it’s stayed the same the whole time. Is it stupid to think about opening it myself and wiping it off with a microfibre cloth?
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Is it stupid to think about opening it myself and wiping it off with a microfibre cloth?
It grows in the glue between the glass, so that won't work. I can't say if it's that for sure though.
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Not necessarily, it could be on the surface of a glass element.
I had a similarly vintage lens that had a lens growth, and was able to clean it with alcohol and a cloth.
Not for the faint of heart though, lens are full of teeny tiny screws, and the aperture blades are super light and easy to dislodge.
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