Sigma makes some great glass and asobinet leaked three lenses that are coming to E-mount this year along with interesting patents for a Sigma 150-600mm F5-6.3 OS and 150-700mm F5-6.3 OS that are probably related to the Sigma 150-600mm f/5-6.3 DG DN OS Sports. 17mm f/4 DG DN | Contemporary Full Frame Lens construction: 9 elements … Continue reading Sigma 17mm, 23mm, 50mm Lenses Coming to E-Mount and 150-600mm F5-6.3 OS, 150-700mm F5-6.3 OS Patents