Shel wrote:
> I mentioned the few bits of dust in the lens I'm
> offering because I want potential buyers to be
> absolutely clear about what they are getting.
> For some a speck of dust is a heart stopping
> experience, for others it's just part of life.
> Even brand new lenses can be found with
It's not always dust either, a lot of the times it can be small chips of
the black matte paint that have started to peel from the inside of the
lens. On zoom lenses it is impossible to seal the unit anyway, because of
lens elements moving around would cause a vacuum, or areas of high pressure
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Scooterman wrote:
> but how in the world does
> one get crud INSIDE of a sealed unit??
Lenses aren't sealed. They have to be vented to allow for expansion
of air and movement of internal workings.
> Is this something I need to be worried about?
Generally not. In fact, I've seen some lenses
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