Kennedy wrote:
> I would suggest putting something over the rubber focus ring - or even
> removing it - before giving the lens a heavy dose of UV from that sort
> of lamp. I don't know how sensitive they are to UV, but most rubbers
> and plastics are to a certain degree and that sort of lamp gives out
> much shorter wavelegnths than is present in sunlight. Fortunately its
> these very wavelengths that are fatal to most carbon based life forms.
> :-)
Speaking of carbon based, is there nothing, inside of the lens, which
will be damaged by the UV rays (lubricants, paint)?
Richard
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