In a message dated 00-02-13 00:26:40 EST, you write:
> I received a telescopic auto extension tube in the mail today.
>
> Can somebody tell me why it sounds like a "rain stick" one would buy at
the
> Nature Co?
> It sounds like there are little balls or something sliding down springs
> whenever I flip it over or move it all, for that matter.
>
> Is this a problem?
>
This is a good thing because it means that there is a ball bearing raceway in
the mechanism that transfers the energy shutting down the diaphragm and
transferring the aperture information.
Warren
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