The Multi-Focus System uses Dual STM motors for fast and precise focus for either still or video applications. It achieves quiet, high-speed, highly accurate autofocus, with superb imaging performance, even when working at close distances. The linear focus function is internal, resulting in minimal focus breathing.

The inclusion of two aspherical elements combined with one ED element in the optical design minimize fluctuations from aberrations, providing superior corner-to-corner sharpness, and reducing the risk of onion-ring bokeh.

The Nano Crystal coating prevents ghosting and flare effects, even in backlit situations.

11 rounded aperture blades allow the quality of image bokeh to maintain an even description

Superior weather sealing makes this lens a suitable choice for excursions out in the world, including street photography and landscapes in any environment

The default setting of the control ring is set to adjust manual focus, but can also be used to control aperture or exposure compensation.