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Humidity is around 55-65% in that room. So probably not great for these lenses. Moving them to a different room right away. So far only one lens is affected, and it appears to have grown very quickly. I'll send the photos to Christoph Greiner first thing in the morning, hopefully the lens can be saved. My 'active' photo gear is not in that room, thank goodness.
Thanks for the advice, I placed the lens elements on a windowsil, so it should get some sunlight tomorrow. I'll reach out to Greiner tomorrow.
It's inside the glued elements, I think. Great.
If Greiner doesn‘t work out for you, I can point you to a different repair place in Germany where I had good experiences.
you cant see it from outside. It can be on the outer side of the glued element. this would be no problem. I cleaned a lot of such lenses. most of them I could clean fully. some old historical lenses not, the fungus demaged the coutings, but i could kill the fungus and these lenses are still optical OK.
this is really scary indeed. But the schneider lenses are not a really big problem, they can be opened and cleaned, thay are 6 or 8 elements classic and easy design, where the cleaned glasselements can be mounted back on the right place also very easy. This will be a big problem with rodenstock digarons that have 14-16 elements. Ones i talk about is with Mr Wenzel he told me that every glass replacemant of the digarons would be so complicated that the work and new optical calibration would cost like a new lens.
