It sounds to me like the inner part of the ring and the detent ball need
to be cleaned and lubed. But that doesn't tell you how to get to the ring.
Chuck Norcutt
iwert bernakiewicz wrote:
> Hello everybody,
>
> after succesful recalibration of my Pen FT meter by carefull wigling
> of the speed knob,
> I'm looking for a solution to a problem my 60mm f1.5 developed:
>
> The aperture ring is stiff between f4 and F11, aperture is dry and snappy.
> It is an FT lens so with the reversible scale. I have an exploded view
> diagramm
> from the book of John Foster (biofos), but that shows the first "F
> version" of the lens.
>
> Question is how to get at the ring? I suppose a carefull cleaning of
> the inner parts
> of the ring will do, but don't know how to get at it (and I'm not in a
> mood to experiment
> with this lens :)
>
> Many thanks for any advice,
>
> Iwert
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