The Tamron 17-28mm F / 2.8 Di III RXD is a fast ultra-wide angle zoom developed specifically for mirrorless system cameras with Sony E-Mount. It offers outstanding image quality and a consistently large aperture of F/2.8. In addition, with a length of only 99 mm and a weight of just 420g, it is as compact and light as any other lens in its class. It is the ideal lens to discover natural and urban landscapes from a new perspective. The optical design includes LD (low dispersion) and XLD (eXtra low dispersion) lens elements, which have been positioned to suppress chromatic aberrations as much as possible. Combined with the most advanced camera features, the full focal length range achieves very high imaging performance that fully exploits the potential of high-resolution sensors.