The Tamron 11-20mm F/2.8 Di III-A RXD is a light and compact lens for Sony APS-C cameras. It is a perfect choice for gripping perspectives & extraordinary viewing angles and is ideally suited for dynamic video recordings. Special optical glasses ensure an optimally corrected, sharp and detailed image. The short close-up distance, only 15cm at the shortest focal length. Tamron - 11-20mm F/2.8 Di III-A RXD for Sony APS-C Mirrorless - B060 - The thrilling new experience of an ultra wide-angle zoom - Cover every... The Tamron 11-20mm Di III-A RXD Lens for Sony E-mount APS-C mirrorless cameras is the world's first ultra wide f/2.8 zoom that comes packed with technology including stunning close shooting performance.