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Ken Rockwell ( http://www.kenrockwell.com) calls this a "magic lens".
|Photos of the Nikkor 18-200 VR lens: At shortest focal length, at longest focal length, and metal mount. It's a bit larger and heaver than the 18-70mm lens at its shortest zoom. The front extends a LOT when zooming out to 200mm.|
Vibration reduction. I have taken photos hand-held at one full second that were only slighly fuzzy at wide angle. Taking photos from a moving automobile is easy and the results are sharp.
11-to-1 Zoom Ratio. Incredibly, this lens appears to be sharp at all focal lengths with very little focus shift during zooming. Over the past few months before I purchased this lens, I frequently found myself needing to change lenses from the 18-70 wide to the 70-300 tele zooms. Very often you will want to not remove your lens (dust or salt in the air) so this lens is the answer to that problem.
Aperture. At 200mm, the f-stop is 5.6 wide open, so this lens is not very "fast". If you are shooting indoor sports you will be better off with a fast f2.8 70-200mm zoom or a fast fixed focal length lens.
Autofocus. The AF-S silent wave autofocus is very fast and quiet. In continuous auto-focus it can properly track fast moving action (be sure to set VR to "normal" or turn it off entirely if you are shooting sports). It isn't a sport lens, but being able to go from 18mm wide to 200mm tele in half a turn of the wrist is an incredible asset for some sports -- just imagine winter sports; zoomed out to see an oncoming skier, snowmobile or whatever -- then zooming back as the autofocus follows the action. At the closest point you are at 18mm wideangle, then start following the action back out to 200mm. I've noticed the autofocus predictor is confused briefly when a fast moving subject is coming toward you and then suddenly leaving you.