The Sigma 10-20mm f/4-5.6 EX DC lens is designed for Nikon cameras, featuring a maximum aperture of f/4 and a focal length range of 10-20mm. This wide-angle lens is made of durable plastic and is compatible with 77mm filters. With both auto and manual focus options, this lens provides versatility for photographers in various shooting situations. Weighing 470g and manufactured in Japan, the Sigma lens is a high-quality unit suitable for capturing expansive landscapes or architectural shots with impressive clarity and detail.