Sigma has announced pricing and availability details for its 18-35mm f/1.8 DC HSM Art lens. Billed as the first zoom lens ever to achieve a maximum aperture of f1.8 throughout the zoom range, the Sigma 18-35mm f/1.8 DC HSM is designed for digital SLR cameras with APS-C size sensors, and offers a focal range equivalent to 27-52.5mm in the 35mm format. The lens will arrive in the United States early July for the street price of $799. The UK RRP will be £799.99 including VAT. This new lens will be available in Canon and Sigma mount in early July with Nikon mount following towards the end of July. Availability for Sony and Pentax mount is to be announced at a later date.