Wanted a lens that I could travel with by air that would not consume all of my allowable weight and space in the cabin. This fits the bill. Hand holding is a piece of cake. The focus worked hot damn on my Nikon bodies at all focal lengths. This lens represents excellent value at a modest price.
UPDATE: Took this lens on a recent trip to Antarctica, South Georgia and the Falklands. I shot in excess of 20,000 images of BIF just with this lens!! My technique sucked the first week and most were throwaways. By week three, with all that practice, most images were keepers in terms of the technical aspects - focus and exposure. I have kept only the very best of the 20,000+ images (about 100) and all are tack sharp. I got better at BIF and the lens performed admirably for me. Big bonus was that, given the focal length and the proximity to the wildlife, I was able to use this lens in many more scenarios than a prime telephoto could have or would have been used. A terrific lens at a fabulous price. What's not to like?