This fast wide-angle lens is well-suited to photojournalism, astro and street photography. Its wide perspective is complemented by the f/1.4 maximum aperture, which excels in low-light conditions and also offers increased control over depth of field. The optical design incorporates three extra-low dispersion elements to reduce chromatic aberrations and two XA (extreme aspherical) elements, which significantly control spherical aberrations for a high degree of image sharpness and clarity. Additionally, a Nano AR coating has been applied to limit ghosting and lens flare for increased contrast and color fidelity when working in strong lighting conditions.
Direct Drive SSM (Super Sonic wave Motor) is quick and quiet, along with responsive manual focus. The lens also sports a dust- and moisture-sealed design and fluorine-coated front lens element to support shooting in inclement conditions and a dedicated focus hold button, AF/MF switch, and manual aperture ring lend further control while shooting.