STM Auto Focus Motor Produces Fast, Precise and Quiet Auto Focus. Manual Focus Mode.
F1.4 Max Aperture. F16 Min Aperture. Metal Aperture Ring With Precise Detent Click Stops.
Multicoated Optical Glass
2 Customizable Buttons. The FN2 button is set to the minimum focus distance. A single press switches the lens to the minimum focus distance, and a long press locks the current focus distance. This feature adds more convenient and quick operation when using the lens.
72mm Filter Ring. Includes Pre-installed 72mm Inlaid Adapter for use with 72mm Revolution & Revolution Plus Magnetic Filters (Filters are not included).
Lens Construction: 10 Groups 13 Glass Elements. (5 low-dispersion glass elements + 2 high-refractive-index glass elements).