Summary: I wish I had known more about the OS (optical stabilizer) feature of the lens before I purchased, tested, and returned it for a full refund minus some delivery costs. The lens overall takes excellent photos. The problem is with its vibration reduction feature which is called OS on this lens. Here is how it works and why it did not work for me as a shooter of events and weddings.
Summary: I got this lens a few days ago, its works fine for me coz i am a mostly an events photographer, I use it with a canon 60D. Pros: -dont have to interchange lenses to get wide angle and close up shot -it is very light and so easy to run around with -it comes with a 62mm lens hood which helps reduce lens flare -nicely marked with approximate distances when shooting in macro mode -has a lens lock at 18mm which doubles up as a macro setting and as a safety feature while...
Summary: my review is so so.. picture quality is not very impressive when you zoom the lens. at 200, its very blur and not satisfactory. at low zoom it is good. I would go for nikon lens by paying more money to get the good quality photo.
Summary: I have no brand loyalty so after spending many hours debating and comparing the sigma 17-70, nikon 16-85, and the tamron 18-50 2.8 I settled on this one due to the features and my past experience with some great sigma lenses. After selling my 18-55 kit lens from my old d5000, I wanted a good all around lens for my d7000. I am comparing it to my $200 35mm prime, a 10-20mm sigma HSM, and the 18-55 kit vr lens.
Summary: I was initially very impressed with the size and build quality of this lens. It just felt very stable. The more I used it, however, the less impressed I was. I found it hunting for focus too much and was slower to lock onto an object than my kit lens. It was quiet, but in low light conditions, especially, it just wouldn't autofocus in time for me to catch the shot I was after.
Pros: Consistent Output, Durable, Rugged, Strong Construction
Summary: I was hoping to replace my Tamron 28-75mm with this for the wider focal length and OS. However, it's quite soft at 70mm. The Tamron is sharper across all focal length and aperture. This is still a great lens and a good upgrade to any kit lens. The OS works really well and focus is fast and accurate. You do have to step down to f5.6 to get good image quality.