On 17/10/03, [EMAIL PROTECTED] disgorged:

>I wonder if Canon "sealed" L lenses are dust free?
>
>Alan Chan
>http://www.pbase.com/wlachan
>
>>Which brings an interesting possibility - creating a vacuum 
>>inside............

Actually, I may be talking a load of nonesense here. What is the general
opinion regarding dust in lenses - am I right that it gets slowly sucked
in over the years through pressure difference??

Can you really have a totally sealed lens??




Cheers,
  Cotty


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