Key Features E-Mount Lens/Full-Frame Format Aperture Range: f/2.8 to f/22 Three Low Dispersion Elements One Aspherical Element Offering a new take on a popular wide-angle focal length, the Tamron 24mm f/2.8 Di III OSD M 1:2 is sleek and lightweight prime designed for full-frame Sony E-mount mirrorless cameras. By utilizing a modest f/2.8 maximum aperture, this lens is able to remain impressively sleek, making it ideal travel shooting applications.