Therefore, I had several times with the Tamron 17-50 mm VC flirted. It overlaps Although my Nikon 18-200 mm, but it has the continuous maximum aperture of 2.8 and that's what matters. I was a bit confused by the negative reviews here, but then it decided to it here at Amazon, because you can give it within a period without comment. After several hundred photos, especially many spontaneous shooting under available light conditions (a few I have set here under user photos), I am thrilled with the lens. It allows thanks to the VC freehand photos that I could not have succeeded before without a tripod. The sharpness, I find it very good. One can very well take pictures without flash people and receives the light conditions in accordance with very natural photos.
It's a heavy lens, but it is very comfortable to hold. The parking barrier I do not need, because the zoom is heavier than the Nikon consistently 18-200 mm, the constantly zooms me without parking lock when worn. As for the here highlighted by some volume of the lens, I can tell. They do not bother me and is nowhere near as noisy as one might think because of the reviews. In everyday sounds is practically inaudible. Also I find the autofocus quickly enough for my purposes.
If one does not need to telephoto, the lens for many shooting situations suitable. Beyond the purely technical merits has been reported enough in other reviews, I would only repeat myself. My experiences relate explicitly to the Nikon version in combination with a D90. If you consider that Tamron gives 5-year warranty when you register online the lens and the value for money weighs, the lens is a clear buy for me.