EOSDigitaal.nl

The Sigma 70-200mm F2.8 EX DG OS HSM is a bold attempt to challenge the quality and functionality of some of the very best lenses on offer today - the fast image-stabilized telezooms form Nikon and Canon. Overall, it has to count as a success: the image quality is very decent, especially when stopped down a bit, and those crucial focusing and stabilization systems work well.

The first thing many will look at when considering such a lens is of course sharpness, and this is probably the Sigma's weakest suit in comparison to its peers, as the latest Canon and Nikon 70-200mm F2.8s have set the bar extraordinarily high. It tends to be very sharp in the center of the frame even wide open, but somewhat soft and low in contrast towards the corners. However it improves dramatically on stopping down, giving truly excellent results across the frame by F5.6 - F8. But overall, it can't quite match the
extraordinary clarity of its more expensive rivals.
..

Sigma has announced a price drop for its 70-200mm F2.8 EX DG OS HSM lens to $1,399, down from $1,699. The company says 'the reason the price went down is to remain competitive in this category and incent sales for this very popular lens.' The lens was amongst the first to incorporate Sigma's FLD glass element. It is currently available for Canon, Nikon, Pentax, Sony Alpha and Sigma DSLRs.