Wide-Angle Zoom Lens The Tamron 11-20mm F/2.8 Di III-A RXD Lens is an ultra-wide-angle zoom lens with a fast aperture, designed to suit the Sony E-mount APS-C mirrorless range of cameras. With a fast 2.8 aperture across the full zoom range, you can easily capture photos and videos in varying light conditions. The equivalent (35mm) range of 16.5-30mm makes this lens perfect for everyday shooting, casual snaps, landscapes, and street photography. Compact & Close Up Even with the excellent fast 2.8 aperture, the lens is still very compact in nature at just 8.62cm high. It is perfectly balanced when attached to a compact APS-C mirrorless camera body, making it a great wide angle for everyday use. At its widest angle, the 11mm focal length, the lens offers wonderful close-up shooting,.