DSLR lenses - do 'sealed' lenses not suck in dust?

Started Sep 27, 2012 | Discussions thread
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Re: DSLR lenses - do 'sealed' lenses not suck in dust?
In reply to Bjorn_L, Sep 28, 2012

Thanks, I've been pondering the Canon 17-40 as it says it is sealed. I am not so worried about getting dust inside a lens, I am more concerned about dust on the sensor. And I do not understand if static electrical attraction is the main culprit or if lens action moving in-out helps pull dust into the body through card door, battery door, etc.

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