Sigma 17-50mm f/2.8 EX DC OS HSM

Last updated (11 March’12):
– Review by Photozone

The Sigma 17-50mm f/2.8 EX DC OS HSM features 17-50mm at focal length with maximum aperture of f/2.8. The lens construction has 17 Elements in 13 Groups and has diagonal angle of view at 72.4 degrees. Closest focusing distance at 28 cm/11 in and has a filter size of 77mm. The Sigma 17-50mm f/2.8 EX DC OS HSM lens weighs 565g/19.9oz and it measures 3.3 inches in diameter and 3.6 inches long.

Sigma 17-50mm f/2.8 EX DC OS HSM
Overall Rating: ★★★★☆ | Latest Price Info

Expert Reviews

Sigma 17-50mm f/2.8 EX DC OS HSM Reviews

Photozone reviews the Sigma 17-50mm f/2.8 EX DC OS HSM and writes;
“Lateral CAs are not really field relevant. The distortion characteristic is about average for a lens in this class. The quality of the bokeh (out-of-focus blur) is slightly better compared to most competitors.. The AF is both very fast and near silent. “
Rating: ★★★★☆

User Opinions

Sigma 17-50mm f/2.8 EX DC OS HSM User Reviews

A must if you are shooting video! | Rating: ★★★★★
“I purchased mainly to utilize the OS (Optical Stabilization) option while shooting video. I have the Canon 50mm 1.4f which is a great lens for low light, but with no OS it can get pretty shaky when hand held. In the small amount of test footage I can already tell a major improvement over non OS or VS..” – by Jonathan Thurmond

Finally a good lens for me! | Rating: ★★★★★
“I am glad to see that I can get perfectly sharp focus without the micro-adjust capability so I have returned the 7D. My T2i and the new Sigma zoom lens take perfect pictures…” – by JayC

Superb Lens at half the price of Canon’s 18-55 f/2.8 | Rating: ★★★★★
“I have to say, I am surprised how good it is. Honestly, I would have to say that it’s almost “L” lens quality. It’s a little soft at f2.8, but by f4, it is incredibly sharp and the color and contrast is amazing. The OS (“IS” in Canon terms) on this lens is quiet and works magically. It is comparable to any IS lens from Canon I’ve ever used. I’ve successfully shot decently sharp photos as low as 1/4 second shutter speeds…” – by One_Wei

After spending an hour with the Tamron and Canon competitors.. | Rating: ★★★★★
“I actually found it easier to hit marks with the Sigma than the Tamron, because of the quality of the ring. For video applications, auto-focus doesn’t really even matter. Sure it’s super silent, but if you’re pro, you’re probably operating this guy in manual anyway..” – by Cullen J Hoback

Amazing Lens | Rating: ★★★★★
“The colors on the Sigma were so much more saturated and the details were so much better. I understand that it’s not fair to compare the Canon 15-85 and this Sigma because either one has its own advantages (such as the zoom range), but the quality of the glass is a huge difference. And don’t even get me started on the sharpness…it is razor sharp! The OS, AF, and large aperture are also a huge plus.” – by Super slim

More user opinions | Write your opinion

Features & Specifications

Sigma 17-50mm f/2.8 EX DC OS HSM Specifications

Sigma’s new 17-50mm F2.8 EX DC OS HSM large-aperture standard zoom lens covers a focal length from 17mm wide angle and offers a large aperture of F2.8 throughout the entire zoom range, making it ideal for many types of photography especially portraiture and landscapes. The OS, Sigma’s anti shake feature offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible. The OS feature allows Sony and Pentax users the option of viewing a stabilized image in the viewfinder, a feature offered only by Sigma. HSM provides fast and quiet AF. Sigma’s own FLD glass elements, which have performance equal to fluorite along with two glass mold and one hybrid aspherical lens, provide excellent correction for all types of aberrations. The Super Multi-Layer coating reduces flare and ghosting.

This lens boasts superior peripheral brightness and provides sharp, high contrast images even at the maximum apertures. With a minimum focusing distance of 11 inches throughout the entire zoom range and a magnification ratio of 1:5. When you need to stand ready for any photo opportunity you need a fast aperture so you can shoot in low existing light or at maximum range with a flash. This Sigma lens is perfect. With its compact size and light weight, it’s a necessary addition to your camera bag.

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