Summary: This lens isn't going to be as great as a more expensive lens but it does a good job. A bonus is the light weight of the lens which makes it more comfortable carrying around while bird watching. Very nice to have the vibration compensation for a lens with long telephoto capabilities while hand-holding it so you don't need to carry a tripod either. So far the photos are in focus and it is compatible with my Fujifilm S5 Pro DSLR.
Summary: We ordered the Nikon version of this lens to have it for a wedding we were attending later that week. It came but it was a day or two before I got to open it. You can imagine how my heart sank when we discovered that the VC didn't work right. Pictures were much clearer without it and it made a terrible growling noise. I contacted amazon and explained the situation. They shipped me a fully functional replacement overnight and it came just hours before the wedding.
Summary: This has become my standard carry lens, and has beat out some of my other mid zooms from Nikon. When I am at an event, and have no idea what I need, this will be the lens. When I am just out for fun, this is the lens. When I want to have 1 lens, and little weight, this is the lens.
Summary: I have used this lens now for about 8 months. I love it. The lens has been the best investment since buying my camera and was quite a bit less than a similar Nikon. This lens takes the place of two of my most used lenses. I am a novice photographer and love to take pictures of family and nature. My family has commented on many more of my photos since using the lens. The pictures just look better.
Summary: So far I've mostly shot landscapes with it, so heavy on the wide-angle end at f/11 & f/16. I'm very happy with the sharpness of the photos. At the long end, no so much. The few that I've taken near the 300mm haven't been particularly sharp. Acceptable for vacation photos, which is why I bought it, but not really crisp. Overall, it's a pretty darn good all-in-one lens to cover a lot of different scenarios.