a dry Jupiter 9
Hi all! I'm back after an intense working time.
I received a MINT black Jupiter 9 f/2 for my Kiev 4 (in the meanwhile the kiev turned BLUE: it's very cool, soon you'll see pics here).
The problem (as often occurs with russian lenses) is that the focusing movement is hard and absolutely not smooth. It needs some lube, and I have all I need to do it.
... But I cannot reach the helicoid! It seems to be impossible to dismantle.
I've lubed some Industars, but never Jupiter: can you help me?
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