A good Brand replacement if you cannot afford nikon
20 December 2013
Summary: Small, Light and does the work perfectly. Bought this for my brother who is a professional photographer and he is really happy with it. Took few pics and sent it to me and they were just awesome. No doubt he is professional but the lens did play a good role to assist him.
Summary: I bought this lens for shooting DSLR video, not pictures, and so far I've been impressed. For the price, you get quite a lot in this hefty piece of glass: good image stabilization, a decent zoom range and outstanding close-up shots. The "OS," or optical stabilizer, works effectively and quietly.
Summary: I was looking for a video lens that would give me a nice wide-angle to long telephoto to use on my Canon 7D without much bulk and at a reasonable price. I priced the Canon equivelant and even the used lenses (on e-bay) were a couple hundred dollars more than I wanted to pay.
Summary: I can't write a review about this lens because it didn't fit my camera. it needed an adapter. Make sure you ask questions before buying I didn't ask had to find out the hard way. there are adapters that will fit the lens.
Nice compromise of quality, weight, and cost. But it failed in 6 months
Arthur Zatarain "Artzat", Amazon
14 July 2012
Summary: Note: See update below. After 7 years with my Canon 20D I finally decided to replace the 18-55 "kit" lens. I chose this Sigma 17-70 after considerable research (and even some testing). While traveling in Utah I borrowed one from a stranger who was admiring the same scenery.
Summary: it is what it says. I just needed a lens. this isn't anything special but has a great zoom. works great with my Nikon D50. Make sure you have a focus motor in your camera or this won't work with it.