17-70mm F/2.8 Di III-A VC RXD (Model B070).World’s first 4.1X large aperture standard zoom for APS-C mirrorless cameras. The 17-70mm F2.8 is a large aperture everyday zoom lens for Sony E-mount and Fujifilm X-mount APS-C mirrorless cameras created to achieve a broad zoom range and excellent image quality (full-frame equivalent of 25.5-105mm). It features image stabilization optimized for video for excellent hand held shooting.