Tamron 20mm f/2.8 Di III OSD M 1:2 Lens for Sony E. Tamron SP Front Lens Cap (67mm). Sleek and ultra-wide describe the 20mm f/2.8 Di III OSD M 1:2 Lens from Tamron; a flexible wide-angle prime designed for full-frame Sony E-mount mirrorless cameras. This lens uses a modestly bright maximum aperture to achieve a […]