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Kern Switar 16mm RX focus ring binds

Chris Peters

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I just got a Kern Switar 16mm RX lens.   When I turn the focus ring it binds in one particular spot, right around the 9 inch mark to the 1 ft mark.  It's not enough to impact functionality, I can easily turn through it, but it does bug me.   Any suggestions?   Where do people go to look at their Kern Switar lenses?

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I fix a lot of these lenses for people in Oz. Binding in one spot on a Kern lens is usually caused by a high spot in the key way fouling against the mount as it slides through. I don’t know who to recommend in the States for Kern lens service, but probably someone who works on Bolex products rather than a general lens service company. Maybe Procam (Bolex USA) or Jean-Louis Seguin or Visual Products or Bernie from Super16inc?

Hopefully someone more local might chime in.

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