Leica LTM How tight should the aperture ring on a 5cm Elmar be ?

Leica M39 screw mount bodies/lenses

Moto Mark

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When I change the aperture ring on my 5cm Red Scale Elmar I have to hold the outer ring with one hand and use the fingernail on the other hand to turn the aperture ring.

It has a lot of resistance on the ring, is this normal ?
 
In mine, the focusing ring rotates very smoothly but the aperture ring has some resistance to it but not too much. I always thought that it feels fine.
 
When the aperture is turned, the barrel should not move. Sometimes a very little bit of sewing machine oil helps. If not, the lens must be professionally cleaned.


Erik.
 
Thanks Victor, it was that same video that got me thinking I might have the same issue.

At best I’d try Erik’s suggestion and use sewing machine oil but that’s as far as I’m capable of going.
 
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