Sony’s large-aperture ultra-wideangle zoom is a truly amazing lens, with remarkable optical performance that’s on a par with high-end primes. The sharpness is very impressive from edge to edge, even at maximum aperture. The lens is also astonishingly compact considering its 122° angle of view and bright maximum aperture of f/2.8. The high build quality includes weather-sealing and a water- and oil-repellent fluorine coating on the front element. Quick and accurate autofocus makes this lens a useful tool for both landscape photographers and photojournalists.