Sigma 50-150mm F2.8 EX DC APO OS HSM
Sigma 50-150mm f/2.8 EX DC OS HSM Lens Review
By: Jon Tarrant, What Digital Camera (Feb 18, 2013)
The 50-150mm zoom is a useful lens in its own right. It would be nice if it were slightly smaller and lighter as it's noticeably larger than its predecessor. It's actually almost identical in size to the 70-200mm f/2.8 from Sigma, but as it stands it feels robust and durable. The AF system generally performed well but occasionally hunted at 150mm. That, and minor colour fringing, aside this is...