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I have a Pentax-F 50mm F1.7 that I bought that had some fungus in the rear elements. I was able to take the rear elements out and clean them with
hydrogen peroxide and get them back together. They are much better now and the lens is very usable.
the front elements have some junk around the edges so I would like to clean behind the front lens. However, I am not sure which part comes out first.
Has anyone taken the front element out of a F1.7 50mm and can they share the process?
Thanks !