I have owned both the VC version and the non-VC version of this lens in a Nikon fit. The non-VC version is definately the sharper of the 2 and gives good image quality but I have since upgraded to the nikon 24-70mm and the difference is worth the money. The build quality of the Tamron is OK and what you'd expect for the price tag, the image quality is good but the one thing that I found let it down was the lack of any real focus speed and it's inability to lock on to a target regularly enough. It's just one of the downsides to buying the cheaper lenses but if you're willing to put up with it then definately good value for money.