The Tamron 20-40mm f/2.8 Di III VXD Lens spans a useful range of focal lengths for everyday shooting. Offered here with a Sony E-mount, this compact and portable lens is well-suited for everything from landscapes and cityscapes to street scenes and portraits. An excellent travel companion, this full-frame lens delivers beautiful images across the entire zoom range and is a great choice for still photography, vlogs, and other video content. A VXD (Voice-coil eXtreme-torque Drive) linear motor focus mechanism provides fast, quiet, and precise autofocus performance throughout the zoom range, and the lens also supports Sony's Fast Hybrid AF and Eye AF features with select cameras. Constant f/2.8 maximum aperture provides bright illumination throughout the zoom range and also enables precise control over the depth of field for working with selective focus techniques. Compatible with many camera-specific features and functions including Fast Hybrid AF and Eye AF. A rapid zoom ring arc of 65° enables swift adjustment to the desired focal length with minimal movement. Compatible with Tamron Lens Utility software for customizing lens functions and updating firmware.