Buy it for the cost, love it for it ability to take great photos.

Lower cost than Canon lens; 4 year warranty ; awesome pictures

High cost

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.

I purchase this Sigma 70-200mm lens as a replacement for my Canon 70-200mm lens without stabilize capabilities. WOW, what a amazing lens, on my first day of purchasing it I went out to back country National park area,I guess I can call it my lucky lens.

My second Sigma 70-200 F/2.8 and now with OS (Image Stabilized). Sigma made some really important and necessary improvements. I loved the previous version but there were some issues with micro contrast and slight CA. But it was such a tremendous value.

Image Stabilizer; Fast Aperture; Comparable quality to Canon and Nikon equivalents; Quick Release Tripod Ring; Large Zoom Ring

Noisy IS which takes a second or two to activate; heavy; not weather proofed

Daniel Lezano puts Sigma's fast telezoom through its paces Guide Price: £1,540 / Street Price: £1,000 construction: 22 elements in 17 groups Maximum aperture: f/2.8 Minimum aperture: f/22 Filter thread: 77mm Angle of view: 34.3º – 12.3º No.

The new Sigma 70-200mm/f2.8 APO DG HSM with optical stabilizer (OS) is an updated version for the popular fast 70-200mm zoom. For the first time from a third-party lens supplier, a 70-200mm, f/2.8 zoom has optical image stabilization.

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

Sigma has been producing fast tele zoom lenses for hand-held photography since the late 1980s and, although the new 70-200mm f/2.8 APO EX DG OS lens claims to be a second generation model, we estimate it's the sixth in a line that reaches back to the original AF 70-210mm f/2.8, which was designed...

Overall it's a very good lens and a good investment. It gives fantastic results when used at f/4 and also gives very good and perfectly usable images at f/2.8 It's only a notch off the Nikon and Canon alternatives. I am very pleased with it and have not regretted buying it one bit.

A bit soft at f/2.8

Great Build Quality, Stabilizer works very effectively with low shutter speeds, has a very heavy and solid feel, silent and fast autofocus; It has very smooth zoom and focus rings; It performs great in low light situations and provides high shutter speeds

Sigma's first optically stabilised 70-200mm f/2.8 promises much. Gary Wolstenholme takes a look at whether it delivers.

Excellent centre sharpness at most focal lengths and apertures; Very low CA levels; Fast AF; Optical Stabiliser; Decent build quality

Lacklustre resolution performance at 70mm and f/2.8