Sigma 18-50mm f/2.8 EX DC HSM

Last updated (28 June’10):
- Review by Topicpoint

Sigma 18-50mm f/2.8 EX DC HSM features 18-50mm at focal length with maximum aperture of f/2.8. The lens construction has 15 Elements in 13 Groups and has diagonal angle of view at 69.3º-27.9º. Closest focusing distance at 28 cm/11 in and has a filter size of 72mm. The Sigma 18-50mm f/2.8 EX DC HSM lens weighs 450g/15.9oz and it measures 3.1 inches in diameter and 3.4 inches long.

Sigma 18-50mm f/2.8 EX DC HSM
Overall Rating: ★★★★☆ | Latest Price Info

Expert Reviews

Sigma 18-50mm f/2.8 EX DC HSM Reviews

Topicpoint reviews the Sigma 18-50mm f/2.8 EX DC HSM and writes;
“The overall image quality seems to be good to excellent. On the wide angle 18mm end of the zoom range, there is very noticeable barrel distortion, but zoomed to 50mm there is very little. “
rating: N/A

Shuttertalk reviews the Sigma 18-50mm f/2.8 EX DC HSM and writes;
“Past experience shows that the 17-35mm Sigma exhibited some distortion and softness around the edges, even on a camera with an APS-C size sensor and resultant crop factor. It was good therefore, to find the 18-50mm f/2.8 lens reasonably sharp along the edges and corners when stopped down, with only moderate distortion at the wider-angle settings. Edge distortion was barely evident at full zoom.”
Rating: ★★★★½

The-digital-picture reviews the Sigma 18-50mm f/2.8 EX DC HSM and writes;
“The optical quality of the Sigma 18-50mm f/2.8 EX DC Lens is decent – it delivers good results for the price. If proper focus is achieved, images are sharp wide open and even better stopped down a stop or so. Right side sharpness is very good, but left side sharpness is very bad. “
rating: N/A

Whatdigitalcamera reviews the Sigma 18-50mm f/2.8 EX DC HSM and writes;
“Although chromatic aberrations are always expected to a slight degree it is surprising to see a small but noticeable amount of pincushion distortion. That is not a fatal flaw but it does very slightly take the edge of what would otherwise be a very impressive set of technical results.”
Rating: ★★★★½ reviews the Sigma 18-50mm f/2.8 EX DC HSM and writes;
“the resolution results are generally very fine except at 18mm where the extreme border performance leaves something to be desired below f/5.6. Distortions as well as CAs are about in line with the rest of the gang. Typical for most dedicated APS-C lenses the vignetting could be a little better at wide-open aperture. The build quality and handling of the Sigma is fine.”
Rating: ★★★★☆

User Opinions

Sigma 18-50mm f/2.8 EX DC HSM User Reviews

Versus Tamron 17-50, Canon 17-55 [is], Canon 17-85[is], Canon 18-55[is] | Rating: ★★★★☆
“Sigma 18-50 f/2.8 Macro is jack-of-all-trade, master of none. While tamron is sharper @17mm f/2.8 than sigma is @18mm f/2.8 “when in focused”, sigma has superior AF motor that is far more reliable under any circumstance. Sigma is a pleasure to use in real life ownership, free from fousing-worrying that plagued my tamron. Sigma 18-50 f/2.8 is a combination between the reliable yet so-so IQ of canon 17-85is + tamron 17-50′s superior IQ, but poor autofocusing mechanics. “ – by Peter Yang

Excellent Image Quality, Low Cost, Great Build! | Rating: ★★★★☆
“Opening the lens up to f/2.8 lowers sharpness, especially in the extreme corners. The nice thing, though, is that my Sigma is about as sharp wide-open, as my Nikkor 24-120mm VR lens is at f/5.6. It is quite usable and impressive at f/2.8 and even has very low vignetting, which is an unexpected bonus.” – by Darrell R. Young

An amazing lens! | Rating: ★★★★★
“this is the first one I’m really happy with, it is sharp at any ange, I have a fixed 50mm lens, which is extremely sharp and bright, and 24mm lens fixed, this lens get the same results as the fixed lenses, When it gets really all the way to 18, it’s slightly changes, otherwise, this is a perfect lens!” – by Avraham Kapuya

An Affordable Alternative | Rating: ★★★★☆
“The lens is slightly wider in size than the Nikon 18-200mm vr, solid and weighty (18.9 ounces according to the specs), but feels just right in the hand. Perfect for low light situations, it is also an attractive looking lens, which comes with a beautiful, well-made lens hood, and an adequate, if somewhat ugly, square case.” – by cyberpsycho

Sigma 18-50mm F/2.8 EX HSM | Rating: ★★★★★
“The pictures I have taken with this lens are a little soft while wide open (common with many lenses), but become razor sharp around f/4. The colors are neutral if not just a tiny bit on the warm side. I haven’t had any experience with lens flare, but I use the included lens hood while outdoors.” – by Chris Lawley

Awesome | Rating: ★★★★★
“The sharpness beat my expectations. I have heard of people complaining about softness and front focusing, but I have not seen either. I was also surprised the HSM motor. Mine is very quiet and very fast. I have the excellent Nikon 18-200 VR and I would say that the focusing speed is maybe not quite as fast, but very close to it.” – by B. Durham

Great lens for the price | Rating: ★★★★★
“It has worked out for me quite nicely. It is a fast enough lens for me to do nice indoor shots with minimal light. The quality of this lens is great. Sigma knows how to make a lens!! “ – by Daniel J. Lundwall

More user opinions | Write your opinion


Sigma 18-50mm f/2.8 EX DC HSM Sample Photos

- Sigma 18-50mm f/2.8 EX DC HSM Sample Photos @
- Sigma 18-50mm f/2.8 EX DC HSM Sample Photos @
- Sigma 18-50mm f/2.8 EX DC HSM Sample Photos @
- Sigma 18-50mm f/2.8 EX DC HSM Sample Photos @
- Sigma 18-50mm f/2.8 EX DC HSM Sample Photos @
- Sigma 18-50mm f/2.8 EX DC HSM Sample Photos @


Sigma 18-50mm f/2.8 EX DC HSM User Manual

- Download Sigma 18-50mm f/2.8 EX DC HSM User Manual (PDF – 1.2Mb)

Features & Specifications

Sigma 18-50mm f/2.8 EX DC HSM Specifications

Sigma’s 18-50mm EX series macro lens is specially designed for Nikon digital SLR cameras with a minimum focusing distance of 20 cm (7.9 inches), making it suitable for a wide variety of subjects. The lens offers a large aperture of F2.8 throughout the entire zoom range, along with a maximum magnification of 1:3 for close-up macro photography. The interior, meanwhile, incorporates both glass-mold and hybrid aspherical lens technology to deliver superior peripheral brightness and extremely high image quality. Add in Special Low Dispersion (SLD) and Extraordinary Low Dispersion (ESD) glass elements and you have a lens that can correct all types of color aberrations while providing a high level of optical performance at every interval.

The lens also offers a super multilayer lens coating that reduces flare and ghosting, a common problem among many digital cameras. Users will also appreciate the inner focusing system, which provides a fast autofocus speed while preventing the front of the lens from rotating, making it particularly suitable for use with circular polarizing filters and the petal-shaped lens hood (included). The Sigma 18-50mm lens–which measures 3.1 inches in diameter and 3.4 inches long–weighs only 15.9 ounces and carries a one-year warranty.

See also: Lens Reviews | Sigma Lenses

Share your photos with our readers, make your own profile page, create blog, get unlimited storage for your photos, discuss photography equipment & techniques by joining our photo community

Subscribe for our latest updates sent to your e-mail (no spam)

Preview | Powered by FeedBlitz

RSS feed

Comments »

No posts yet.

Have Your Say

Your Comment may not appear immediately due to moderation
Name (required)
E-mail (required - never shown publicly)
Your Comment (smaller size | larger size)
You may use <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong> in your Comment.