Sigma 24-70mm F2.8 DG OS HSM Art Review

The Sigma 24-70mm F2.8 DG OS HSM Art is an exciting new professional standard zoom lens for full-frame DSLR cameras. Retailing for £1399 / $1299, can the Sigma 24-70mm f/2.8 compete with the equivalent lenses from Canon and Nikon? Read our Sigma 24-70mm F2.8 DG OS HSM Art review to find out... Read the review »