THE ULTIMATE PORTABLE, WIDE-ANGLE MIRRORLESS PRIME Category: Lenses, DG DN , I SeriesClass: ContemporaryTypical Photography: Creative, Travel, Landscape, Wedding & Events, Family, Specialty 10 elements in 8 groups, with 1 SLD glass and 3 aspherical lensesCompatible with high-speed autofocusAuto Focus Stepping MotorCompatible with lens-based optical corre...