Earlier this week, Sigma announced a 150mm f/2.8 Macro lens with its great HSM AF motor inside.  The new macro lens offers a 1:1 magnification ratio, along with a 9-blade circular diaphragm.

While Sigma showed off the new lens at Photokina 2010, it has not released further details concerning its price or availability.  For the sake of reference, the current 150mm f/2.8 Macro lens is available in Canon, Nikon, Olympus and Nikon mounts and carries a street price of around $730.

More details in the press release below. [Read more…]