I was very excited when I saw this article. I am shopping around for a replacement of my 18-55 kit lens (I bought a Nikon D90 from B&H last March and opted to have 18-55 & 55-200 lenses instead of the 18-105 kit lens - hoping to have a better total zoom range). I then learned the hard way that changing lenses costs you time and you may lose a shot (or your wife loses her nerve!) or you may get dust on your lens. And also it is not always easy and practical to carry a second lens with you.
As my experience builds up my frustration with the kit lens increases. Especially the need for a faster lens is like a thorn on my side.
Having said that, I was very surprised that my top of the shopping list lens does not appear on your article: Sigma 17-70 f2.8-4.0 . This lens (at least on paper-I did not have the chance to test it) has a acceptable zoom range and a very respectable f-stop range. I first looked at Nikon's own 16-85 but it is not different from the 18-55 in terms of f-stop range. The Sigma beats Nikon on price and f-stop range (but falls short of the zoom capability - but I can live with that)
I honestly would like to hear your opinion on the Sigma. It would be good to have an expert opinion before I buy the lens.
Wish I can help you but as of November 22nd, 2010, @ 5:12pm I have not had any hands-on experience with this particular lens. That said, I won't venture past whatever I've put to press. If I did, I'd be lying and Mom said I shouldn't lie.
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