Olympus E-PM2 Alanya Ships Photos created with Sigma 30mm F2.8 Lens in my holiday travel in july 2013. The Sigma Auto focus 30 millimeters f/2.8 Ex lover DN can perform supplying an outstanding middle overall performance from f/2.8. The Sigma AF 30mm f/2.8 EX DN is a cute little fellow but not only that – it’s good quality stuff, too.