Real time eye AF for still + Animal Eye AF Real time tracking World fastest 0.02 Sec AF speed with 425 phase detection and contrast points 24.2MP, EXMOR CMOS sensor with outstanding light sensitivity A double-gauss configuration effectively suppresses field curvature and distortion F1.8 maximum aperture opens up a world of beautiful prime-lens bokeh An affordable, compact recommendation for step-up user Designed for reliability in a wide range of environments