Summary: I've been using this a lot, almost as my walk-around-with lens. All controls work smoothly, it holds position even when aimed straight up or down, and seems to add little in the way of distortion (at least to my view). Compact, weight within reason (nothing is LIGHT light any more), As an amateur, I have to say it's a good'un.
This is a great lens. You can get semi-macro shots
james freeman, Amazon
2 August 2014
Summary: This is my go to lens. I am only a casual photographer, so I want something that does it all. This is a great lens. You can get semi-macro shots, and panaramic ones all with the same lens, and the focus is really sharp. It is a breeze to work with, and very easy on beginners like me.
Excerpt: This lense gives me the wide angle I needed without paying too much, and, at the same time, a pretty good zoom that makes possible a discrete approach to your target! I highly recommend it. The delivery was fast and easy, right on the day scheduled.
Pros: Fast / accurate auto-focus, Strong Construction
Excerpt: I've used several popular all-in-one lenses, and my very unscientific comparisons show this to be noticeably the sharpest. Other nice features include light weight, no lens creep when the lens is pointed down, and fast and quiet focusing.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Nice Bokeh, Rugged, Strong Construction
Summary: This is a great lens that compliments my 70-200 f2.8. The f 2.8-4 fits almost any situation. Although it is a DX lens, which I use on a D7000, I also routinely use it on my D600 with no vignette seen on the image (to the native eye, not pixel peepers). Do be aware that as soon as you zoom out of 17mm, the 2.8 goes up to 3 and then after about 30mm to 3.2 and then at about 60mm it goes to f4, but, overall, is one stop that important?
Summary: I say WAS because I updated to the latest version (Sigma 17-70 Contemporary) so I could use the new USB dock with and update firmware and fine-tune focus. This lens was on my camera 95% of the time. No need for a 35 or 50mm f1.8. This takes the place of both...and then some. If you can't afford the newer version...buy this. If it broke, I'd buy it again.
Summary: First off I'm going to say WOW! I shoot with a Nikon D5100, and a D3000 as a backup. I bought this lens looking for something to replace my Nikon 18 - 55mm kit lens, turns out it replaced most of the glass I use. I've been on probably 15 - 20 shoots with this lens now and it still has not stopped amazing me. This glass will probably be my everyday use lens for a long time.