Along with this, it has a fast f/2 maximum aperture, useful for creating images with a shallow depth-of-field and working in low-light conditions. Ensuring optimal image quality is a 9 element in 6 group design that incorporates two ED and two aspherical elements that work to minimize aberrations and distortion for crisp, clean imagery. Also, the lens has the Nano-GI coating which dramatically limits the effects of ghosting and flare.
For operation, the lens is equipped with a physical aperture ring for tactile control when desired. It also has a fast internally focusing AF system that can lock onto a subject in just 0.08 seconds. Further benefitting usage is a weather-resistant construction with eight seals throughout the lens barrel. Additionally, a rounded 9-blade diaphragm produces pleasing out-of-focus elements.