The Sigma 12-24mm f/4.5-5.6 DG AF HSM Wide Angle Zoom Lens is designed for Nikon cameras, featuring a maximum aperture range of f/4.5-5.6. This lens offers a focal length range of 12-24mm, making it ideal for wide angle shots. It has both auto and manual focus capabilities, along with a sturdy aluminum exterior construction. The Sigma EX series lens is compatible with Nikon AF mount cameras and is crafted in Japan.