Product Details + 35mm Equivalent: 24-75mm Aperture Range: f/2.8-22 For DT Alpha & Minolta DSLRs Optimized for APS-C Image Sensors Extra-Low Dispersion (ED) Elements Aspheric Glass Lens Elements SSM Super Sonic Wave Motor Minimum Focus Distance: 1.0' 7x Circular Aperture Blades Filter Thread: 72mm