Sigma announces 18-35mm f1.8 wide-angle zoom lens
Sigma has announced that they are releasing an 18-35mm wide-angle zoom with a constant aperture of f1.8. The 18-35mm F1.8 DC HSM Art lens is, the company claims, the first lens to offer such a large aperture throughout its zoom range. Suitable for DX cameras, the camera has a minimum focus distance of 11”, which may make it suitable for underwater use.