Excerpt: I thought I had heard great things about this lens, but perhaps it was a different Sigma lens. This one was too noisy for use with my 70d for video. It's a nice range, but that was my primary reason for getting it.
Summary: This was my first non- Nikkor lens. I had done considerable research before I bought this lens. Everybody loved it, and I had hoped that it would enrich my photography experience. Unfortunately, my copy had an autofocus problem. It would focus behind the intended focal point.
Excerpt: I purchased this Sigma as an alternative to a 16-35 f2.8 from Canon as I was able to buy lots more products for the same money (bags, cards etc). I mainly use the Sigma at night parties/events but gradually the focusing was very much hit and miss.
Excerpt: The good: it is light weight. The bad: it is not as sharp as it should be for a 2.8 lens. The ugly: the fact that I was anticipating a great lens from the reviews. Will stick with Nikon from here on out. Just got a Nikon 24-70mm f/2.8 and its everything it was promised to be. Excellent lens.
Excerpt: I really wanted to like this lens. I have Canon 17-40 f4 L, but got this for the extra stop. The lens arrived with spots, the focus ring was very hard. The image quality okay. I decided to return it.
Summary: I bought this camera used from Adorama. I thought this was a safe option because I assumed Adorama checked their used items really well. Well I was wrong. My copy of this lens does focus from the center going out to the right edge of the photography.
Summary: Got this lens after lots of research suggested it to be better than the tamron and as good as the canon 17-55. Build quality seems good but AF leaves a lot to be desired. I found pictures to be less sharp than I had expected so I used my camera's AF microadjustment setting to correct it.
Summary: I bought this lens to take photos of our newborn baby. I rented it beforehand along with another I wanted to try, and chose this one based on fast relatively quiet AF, adjustable zoom, fast enough aperture, and OS. My rental copy was perfect. no front or back focus issues on my D7000.