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

Started Sep 27, 2012 | Discussions thread
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SoCalBeachBum Regular Member • Posts: 176
DSLR lenses - do 'sealed' lenses not suck in dust?

reviewing DSLR lens choices, the higher end lenses say they are sealed. does this mean dust would not get sucked into the body as easily?

or does dust get sucked into a body through card and battery doors? is the sucking action less on lenses that do not extend when focusing or zooming?

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