Focal length: 100-400mm Aperture range: f/5-6.3 to f/22-29 Sony E-mount lens For full-frame mirrorless cameras Powerful image stabilization (OS) of four steps 22 elements in 16 groups, with 1 FLD and 4 SLDs Compatible with high-speed autofocus Designed to minimize flare and ghosting Exceptional level of bokeh and compression effect Stepping motor system for phase detection AF and contrast AF