In the photography community, the Nikon 18-200VR (AF-S DX VR Zoom-Nikkor 18-200mm f/3.5-5.6G IF-ED) is discussed quite controversally all the time, its optical qualities, its mechanical qualities, and whatnot.
Well, its the lens that I'm using most of the time, simply because its so versatile. Its field of view corresponds to 27-300mm if you consider the crop, and the VR makes it possible to shoot freehand at the long end quite safely (while f/5.6 together with the crop of 1.5 is not exactly good to isolate a subject at the long end, indeed).
But what I haven't read about very often is the dust problem you're facing sooner or later when you're using this lens (or, most likely, any other superzoom lens). If you have dust on your sensor, its most likely NOT from exchanging lenses in a dusty environment - it CAN happen, but how likely is it? I dare say that, if you have dust on your sensor, its more likely the result of using a (super-)zoom lens.
The 11.1x zoom range of the 18-200VR moves a LOT of air in and out of the lens... and into the camera's mirror cabinet of course. When you zoom in & out all the way while looking through the viewfinder, you can even feel the air moving. And that air is unfiltered, of course...
So - is spring the most lovely time to get dust-freckles on your sensor? With all the pollen flying around, it wouldn't surprise me.
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