Even internally zooming and focusing lenses suck air in, since moving lens groups don't act in a vacuum.
Here again, we have a typical case of belief vs. experience.
And when it comes to experience, I'd guess that LensRentals' Roger has more of it than all our forum members. His statement was absolutely clear!
I've just bought the RF 70-200, the "dust-pump" type, because I'm fully convinced of the concept!
Here again, we have a typical case of belief vs. experience.
And when it comes to experience, I'd guess that LensRentals' Roger has more of it than all our forum members. His statement was absolutely clear!
I've just bought the RF 70-200, the "dust-pump" type, because I'm fully convinced of the concept!
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