Features Maximum T2.9 aperture for deep depth of view and increased area focus 11 aperture blades for smooth, circular bokeh Lens construction of 22 elements in 18 groups 270° focus rotation, 42° aperture rotation, 100° zoom rotation Lens markings in feet and meters 0.23x maximum magnification, 2.7x zoom ratio EF mount bayonet included; built-in lens support foot 77mm front filter thread 19.3″ minimum focusing distance Industry-standard 0.8 MOD focus, aperture, and zoom rings for use with follow focus systems
