A minimum focusing distance of 20cm (7.9"), a maximum magnification of 1:3
Large aperture of F2.8 throughout the entire zoom range
Special Low Dispersion (SLD) and Extraordinary Low Dispersion (ELD) glass elements provide excellent correction of color aberrations. This lens produces an exceptional level of optical performance
Compact and lightweight lens
Reduced Ghosting and Flare The super multi-layer lens coating reduces flare and ghost. High image quality is assured throughout the entire zoom range
Customer Reviews
Average Rating:
Rating: - ..not great
I really wanted to buy this lens. Unfortunately, my kit lens (Nikon 18-55 EDII) is a lot sharper than this!! I tried this previously at a local trade show. Although the build quality seems very good. It appears very soft at f/2.8 across its entire zoom range. That in itself was a deal breaker for me. The whole idea of having a lens like this is low light performance and some respectable sharpness. Sharpness does not come close to respectable for my taste. I was told that there are sample to ... Read More
Rating: - Another good Sigma Buy...
I received my Sigma 18-50 f2.8 lens from 47th Street photo via Amazon a few days ago. This was my second sigma lens and I am quite satisfied with my very first experiences as a replacement of the kit 18-55 lens. The only draw back is that I realized a shadow on the photos when I used the built in flash of my Nikon D40x, most probably because of the size of the lens.
The quality of the lens itself (including the lens bag and construction) and the photos are incomparably better than the ... Read More
Rating: - Fabulous lens if not for the front-focus and random overexposure problems...
I purchased this lens in spite of the possibility of receiving one of the "faulty" lenses I'd read about in other reviews. Unfortunately I seem to have bad luck.
I kept the lens for nearly a month, hoping it was my camera (I have a Nikon D40) but I tried it on a Nikon D200 and got the same disappointing results. If one were to merely glance at the photos, they would probably not notice anything wrong. But as I looked closely at almost every picture with a narrow depth of field (pictures ... Read More
Rating: - Issue with connectivity
I liked the photos I took with this lens. THe macro is just fantastic. After a week I started having problems when the camera would not fire and the display would show F-- . The lens metal connectors were not sitting right on the camera connectors. It had to be twisted a little to connect with the camera body connectors otherwise it would not fire. I returned it to Amazon.
Just to make sure I have no faulty camera body I tried the original Nikon lens and it works perfect.
PS: I used this ... Read More
Rating: - Another Sigma front-focus problem
I've owned Sigma before and this is yet another lens from them that has the front focus problem. I used this on the D200. I own the Sigma 24 1.8 and I had to send both the lens and camera body to Sigma to fix the focusing problem. I just don't want to bother with that any more so I returned it. The Sigma 18-50 has the potential to be a good lens but focusing issue causes images to be extremely soft (especially at 50mm). I borrowed a friend's Tamron 17-50 and it focused perfectly on his D80 and my ... Read More
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- ..not great
- Fabulous lens if not for the front-focus and random overexposure problems...
- Issue with connectivity