I’ll keep this one brief. If you are at all looking for a lens in the 18-50 range, this one should be all you need. I use it on my D200 and love it. Fast, crisp and versatile. I used it for a wedding recently and found I didn’t need to change the lens at all, but did have to move in closer to the subjects. I used it at a conference recently and found it coped pretty well with the very low light levels. I love the crispness of the image and whilst I can see some slight vignetting in the corners at each end of the zoom range, it is not significant enough to make me stop using it. Go and try it yourself – make sure it is the HSM version, and you won’t be disappointed.
I am now wondering about the 18-200 lens I have written about previously… this new one knocks spots off it at equivalent zoom range, so I might well be looking to replace the older one. Maybe I ought to try the Nikkor 18-200 VR lens… anyone managed to get hold of one for less than Â£500, and if so, what do you think of it?