Review: Sigma 24-70mm f/2.8 EX DG HSM|
Andrew Alexander, The Imaging Resource
(Monday, October 5, 2009 - 16:49 EDT)
At Photokina 2008, Sigma announced an update to one of its lenses: the 24-70mm f/2.8 EX DG HSM. The update included rounded diaphragm blades, an additional extra-low dispersion lens element, and most importantly, an HSM autofocus motor. We've just finished putting the lens through its paces in our lab, and have found some interesting results: click here to read our full review of the Sigma 24-70mm f/2.8 EX DG HSM lens.