The latest addition to Zeiss' collection of fast lenses designed for Sony's A7-series cameras -- though they'll also work on smaller-sensor models like the A6000 and A6300 -- the Batis 2.8/18 is Zeiss' fastest and widest lens to date for a mirrorless camera. As usual, though, speed costs you; in this case, $1,500 (£1,190; directly converted, AU$1,950).
The lens has all the typical Batis physical and Distagon optical design characteristics, including weather sealing and an OLED focus-distance readout for use in manual mode. It can focus as close as 9.8 inches/25 cm. You'll be able to welcome it to your camera bag in May 2016.