Sigma's 150mm f/2.8 EX DG OS HSM APO Macro lens is a second-generation product, adding optical stabilisation to an already popular (and high-performing) lens. The new lens is optically more complex than its predecessor and, thanks to the added Optical Stabilisation (OS) system, just over 250 grams...

There aren't many third-party manufacturer products which truly stand out from the crowd. However, Sigma's 150mm f/2.8 EX DG HSM APO macro lens was clearly one of them. Sigma has just released its successor featuring Sigma's OS (Optical Image Stabilizer).