12-24mm Focal Length/ Three ED (Extra-Low Dispersion) Glass Elements/ Nano AR Coating II/ Four High-Speed, High-Thrust XD (Extreme Dynamic) Linear Motors/ Dust And Moisture Resistant/ Floating Focus Mechanism/ Customizable Multi-Function Focus Hold Button/ Natural, Linear Manual Focus Response/ Instant Auto/Manual Focus Selection/ Fluorine Front Element Coating/ Rear Filter Holder/ 35mm Equivalent On APS-C And Super-35 Bodies/ Black Finish
