dj dunzie Offline Dedicated FM Upload & Sell: Off
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I've gone one step further... I've compared the 18-70 head to head with the 18-200VR and the 17-55 f2.8. I ended up getting rid of the 18-70 because it got filed in the department of redundency department.
Just plain and simple I found the 18-200VR was capable of results just as good as the 18-70 (maybe even slightly sharper and punchier in the common range with my copies!), and of course added the terrific VR (the VR is better on the 18-200 than the 70-200!) and the huge range extension.
As for comparing the 18-70 to the 17-55, there was really no comparison, except for the fact that results have to be tempered with the obvious huge cost difference.
Let me put it this way... I kept listening to folks on this forum rave about the 17-55 f2.8 ad nauseum (Jack O was the main raver... ). I hesitated and hesitated, until finally I had to put in an order. And once I got it, used it regularly, and tested it thoroughly, I say this... This lens is the shorter-length equivalent of the 70-200VR. It's that good. It is an amazingly good focusser, it is sharp as a tack, it produces vivid colors, and best of all I can't find ANY of the usual zoom lens weaknesses with it. It's sharp wide open, it's sharp at the edges, it's sharp in the center, it's sharp at 17mm and it's sharp at 55mm. If there is a weakness to this lens I honestly am baffled where it is. With the 18-70 and 18-200VR, I know the lenses have "tricks" to get the best out of them. With the 17-55 I don't avoid ANY kind of shot. I just set up and shoot, and know I'll never be able to blame the lens for poor results. Everything it does it does well, including limiting any distortion at 17mm!
Now, whether or not it's worth the huge difference in cost to you only you can decide. If you find you're wishing for better results wide open, or do a lot of lower-light shooting and can take advantage of a shorter-range zoom that goes 2.8, it's not going to disappoint.
Grab your camera and 18-70 and a card and go to a store that will let you try it out, and compare your results at home against your 18-70... that'd be a good test, and peace of mind before you put out the money it takes to do the switch.
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