Type: The SIGMA 10-18mm F2.8 DC DN Contemporary is an ultra-wide-angle zoom lens for APS-C cameras. It is the world's smallest and lightest ultra-wide-angle zoom lens for APS-C cameras, covering an effective focal range of 15-27mm (35 mm equivalent). The lens has a bright F2.8 aperture, sharp optics, and a fast AF stepping motor. It is designed exclusively for APS-C mirrorless cameras and features minimal focus breathing. The lens has a petal type hood and is compatible with Sony E mount devices.