Key Features E-Mount Lens/Full-Frame Format Aperture Range: f/2.8 to f/22 One Low Dispersion Element One Aspherical Element A favored focal length for everything from street photography to portraiture, the 35mm f/2.8 Di III OSD M 1:2 from Tamron is a sleek and lightweight take on one of the most popular and beloved focal lengths around. Designed for full-frame Sony E-mount mirrorless cameras, this wide-angle prime is distinguished by its f/2.8 design