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. I save a lot of money buying it on Amazon and no other like products came close to it in price. Can't complain about it's performance. Meets my need for wide angle shots.
GREAT all-purpose lens! More bang for the buck than the big brand names!
18 February 2012
Summary: I did a portrait session last night, and had a chance to compare several Nikon lenses with my newest addition to my bag, the Sigma 18-50 mm. It's quickly becoming my favorite lens! It auto-focuses very fast, and the pictures are sharp. This is my third Sigma lens, and I'm very impressed with the quality and the value.
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. For my first use of the lens I was in a hurry and found only a 10 dollar UV filter in a shop. My photos were sharp but seemed a little over exposed and washed out in the colors.
Summary: This lens is great! I bought it for my Canon EOS 10D, and I can get pretty sharp pictures with minimal CA, purple fringing, or barrel distortion. The lens body feels rugged overall, the mount is very sturdy, and the zoom and focus rings turn smoothly. Then there are the downsides, which are more or less common among lenses at this price.