Summary: I really couldn't afford a new lens of this caliber for my Nikon camera. This was used, but when I received it in perfect condition and didn't appear to be used. I have used it a few times and been very satisfied with it.
Summary: I needed a small, lightweight, robust lens with some wide angle capacity for daylight outdoor photography with my Nikon D5000. I chose between the Sigma and the Nikon 18-55 kit lens. The Nikon got good reviews on the optics, but the Sigma appeared more robust and still more compact.
Summary: While this is a basic wide angle zoom, lacking features like super-fast aperture or image stabilization, it performs better than it's price class indicates. The build quality is solid, the controls are obvious and easy to use, and the images taken with this lens are superb.
Summary: I was cursed with a Nikon "kit" lens. After a period of time the motor simply stopped working. I had no idea how poor the lens was until I purchased this Sigma to replace it. The Sigma is a quality product at a reasonable price.
Summary: I love this lens. It's great for every day shooting. The wide angle isn't really super wide, but you know that from the numbers. The only reason I say it's not super portable is that it's a little big- there's really only one configuration that works with my smallest bag, so it's less than...
Summary: Bought this lens to use as a wide angle landscape lens. It is great so far. The sharpness is excellent, it focuses quickly and zooms easily. I would reccommend this lens to anyone looking for a lens in this focal range, especially for the price.
Summary: I was not too happy with the product when it first arrived, mainly because mine did not look anything like the one in the picture. I tried to contact the seller to return it but had to wait forever to get a response. It didn't worth the hassle so I decided to keep it.