A bright f/2.8 maximum aperture makes it possible to shoot under pretty much any lighting conditions, and the lens coatings have been optimized to seriously reduce ghosting and flare, while maintaining exceptional color balance.
Six elements, including one aspherical element, produce consistently high image quality from the center of the frame to the edge.
With seven diaphragm blades, the wide f/2.8 aperture, and the ability to focus as close as 11.8 inches, this is a crackerjack lens that also offers superlative bokeh the out of focus background area in an image.