After reading what feels like dozens of reviews - all complimentary, I decided to take the plunge and get one of these - I do a lot of indoor fast action and kids photos, needed something fast and decent zoom. Unbelievably sharp photos, better than my prime lens...

Easy to use; Build quality

I purchased this lens after a recomentdation. After using it for a day to get familiar with it, I found that it was just too slow for an f2.8 for the money. The focus seemed to be just a little bit off when wide open at 200mm.

Nice Bokeh; Strong Construction

Slow Focus

Versatile, sturdy, and built with high-quality optics, the Sigma APO 70-200mm F2.8 EX DG OS HSM offers a good value, although it's not exactly cheap.

It lacks weather sealing; and the autofocus falls a step short

The Sigma APO 70-200mm F2.8 EX DG OS HSM ($1,259) is a less-expensive professional alternative to similar lenses from Canon, Nikon, and Sony. The stabilized 70-200mm f/2.8 zoom is the go-to lens for many an event shooter, and getting one for under $2,000 is an appealing prospect.

Excellent center sharpness through most of its range; Fixed f/2.8 aperture; Includes tripod collar; Optically stabilized

So-so images at 200mm f/2.8; Distortion at 70mm; Edge performance could be better

It's expensive, but not as expensive as similar lenses from the first-party manufacturers. If you want speed, quality and versatility, the chunky Sigma 70-200mm lens is a belter.

Fast constant maximum aperture; build quality; AF/MF switching

A focus limiter would be nice; no macro ratio scale; no image stabilisation

Mount: Canon, Nikon, Pentax, Sigma, Sony A Format: Full frame Construction: 22 elements in 17 groups, nine diaphragm blades Closest focus distance: 140cm Filter size: 77mm Autofocus: ultrasonic (ring) Dimensions: 86 x 198mm, 1,430g Tested on: Nikon D7100 Compared with the equivalent Canon and Nikon...

Even though there's a slight drop in sharpness at 200mm, the Sigma delivers excellent overall image quality, making it exceptional value at the price.

Value for money; Overall performance; Dual-mode image stabilizer

Slight loss of sharpness at full zoom; f/2.8 maximum aperture makes it big and heavy

This lens is good as Nikon 70-200

Perfect

Sharp and Fast

This lens will please the most discriminating photo enthusiast and pros alike. This lens is just as sharp as the canon lens. The constant F2.8 is a big plus too. I can not say one bad thing about this lens it's that good. Buy one you will love it, and love the $$ you saved.

Quality feel; fast Auto focus and HSM motor; Tripod collar; case and Sigma warrantee

None noted

Produces great colours and the focus is pretty fast, however can be a little inaccurate or miss read the subject. at 2.8f the background blur is beautiful! I would definitely recommend this as a economical option to the Nikon version with cost double.