Sigma 18-50mm f/2.8 EX DC Macro

Last updated (06 July’10):
– Review by Photodo

The Sigma 18-50mm f/2.8 EX DC Macro 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 69.3 degrees. Closest focusing distance at 28 cm/11 in and has a filter size of 72mm. The Sigma 18-50mm f/2.8 EX DC Macro lens weighs 450g/15.9oz and it measures 3.1 inches in diameter and 3 inches long.

Sigma 18-50mm f/2.8 EX DC Macro
Overall Rating: ★★★★☆ | Check Availability

Expert Reviews

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

Photodo reviews the Sigma 18-50mm f/2.8 EX DC Macro and writes;
“this lens goes way past average with even the edge performance being good and the resolution achieved in the centre of the lens being outstanding. The figures for the lens at f/5.6 at 28mm being the highest achieved on any lens I have tested to date. The colour rendition is neutral, as is the norm with Sigma lenses and the contrast excellent.”
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Ephotozine reviews the Sigma 18-50mm f/2.8 EX DC Macro and writes;
“This is where this lens really proves its worth! It’s outstanding and the sharpest lens I have tested to date, which includes some top glass from leading camera manufacturers. Chromatic aberration is very well controlled, although at the wide-open aperture of f/2.8 there is some evidence in the corners of the pictures.”
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Topicpoint reviews the Sigma 18-50mm f/2.8 EX DC Macro and writes;
“The Sigma 18-50mm F2.8 EX DC lens is a nice, light weight, bright lens. It serves well as a general-purpose lens, and its bright f/2.8 aperture is wonderful, especially given its compact size and light weight. The lens is sharp at f/8.0 to f/16 throughout its range, very good at f/5.6 and f/22, and usable at f/2.8 though rather soft.”
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Photozone reviews the Sigma 18-50mm f/2.8 EX DC Macro 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: ★★★★☆

The-digital-picture reviews the Sigma 18-50mm f/2.8 EX DC Macro 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. “
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User Opinions

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

Excellent value, excellent lens | Rating: ★★★★★
“I did some research and decided to buy a Sigma dslr body (VERY pleased with the camera) and a good lens. I decided on the Sigma 18-50mm f/2.8. Excellent speed excellent optics, excellent speed. Exactly what I wanted, and the price for everything wasn’t too bad. “ – by Bill B.

Impressive Quality and Performance | Rating: ★★★★★
“I am amazed with the pictures that I took with this lens at all apertures. When compare to the kit lens even at F2.8 the pictures taken using Sigma are way sharper, few reviewers mention about soft image at F2.8 but perhaps my results are different as maybe the kit Olympus lens which is made in China failed quality control and as a result I end up with bad lens.” – by A Kid’s

Compact, reliable, fine image quality, excellent overall, | Rating: ★★★★☆
“Well built mid range zoom for cropped sensors. Lightweight. Excellent image quality. My only complaint is that this lens doesn’t have the HSM focus system. “ – by joe_n_bloe

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

Great low light lens for my Pentax K20D | Rating: ★★★★★
“I was worried about losing the extra 5mm of zoom but the lower light f2.8 capability absolutely made this lens the way to go. My light conditions constantly range from “too much” to “not enough”. This lens performed perfectly in all conditions. Mechanical motions are smooth and didn’t change in a recent 9 day temple shoot of 7,000 photos in 9 days. The lens feels solid and performed reliably. “ – by Kent Davis

An amazing lens! | Rating: ★★★★★
“I had few lenses before, 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

great build, a bit squirrely in AF usage | Rating: ★★★★☆
“After some more tests, I figured out that one issue was camera-shake (the battery tests were on a stable surface)– I might just have an unsteady hand, but this is a short lens, and I hadn’t experienced this on my various Canon lenses (both IS and non). A further issue was that even with good contrast, the AF wasn’t picking the center (strongest) focus point. Switching to single-point as I had with the battery test produced the sharply focused images I had expected. This was my first non-Canon lens, so I’m not sure if this is somehow intrinsic to using a 3rd party lens.” – by Omar Siddique

Great lens for the price | Rating: ★★★★★
“I thought I would write a review today as I purchased this lens some time ago and have had a chance to use it. 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. “ – by Daniel J. Lundwall

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

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


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

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

Features & Specifications

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

The Sigma Corporation is pleased to announce the launch of the 18-50mm F2.8 EX DC MACRO lens. This lens has a large aperture of F2.8 throughout the entire zoom range, a minimum focusing distance of 7.9-inches and a maximum magnification of 1:3, making it ideal for close-up photography. Specially designed to suit the characteristics of digital SLR cameras this lens provides a high level of optical performance.Its design incorporates both glass-mold and hybrid aspherical lens technology which offers superior peripheral brightness, extremely high image quality as well as a compact and lightweight construction.

Special Low Dispersion (SLD) and Extraordinary Low Dispersion (ELD) glass elements provide excellent correction of color aberrations. The super multi-layer lens coating reduces flare and ghosting, a common problem with digital cameras. High image quality is assured throughout the entire zoom range. An inner focusing system eliminates front lens rotation, making the lens particularly suitable for using the petal-type lens hood (supplied) plus circular polarizing filters.

EX Lens
The exterior of this lens is EX-finished to denote the superior build and optical quality, and to enhance its appearance.

DC Lens
These are special lenses designed so that the image circle matches the smaller size of the image sensor of most digital SLR cameras. Their specialized design gives these lenses the ideal properties for digital cameras, the compact and lightweight construction is an added bonus ! including compact and lightweight construction.

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