The continuous f/2.8 maximum aperture provides constant efficiency throughout the zoom range and pairs with a rounded nine-blade diaphragm to produce smooth shallow depth of field images.
The lens' design includes a trio of extra-low dispersion elements, 3 aspherical elements, and one anomalous dispersion aspherical aspect to manage a range of aberrations and distortions in order to produce well-corrected images with significant sharpness as well as lighting.
An HD coating has been applied to further benefit operating in challenging lighting conditions by reducing lens flare and ghosting for enhanced contrast and color neutrality.
Matching the optical efficiency of the lens is a Supersonic Direct-drive Motor, which provides quick, peaceful, and fast autofocus efficiency that is perfect for both stills and video shooting.
A weather-resistant build is included, for operating in extreme environments, and a Quick-Shift Focus System and zoom lock lever offer instinctive handling and control.