The Sigma DG 70-300mm f/4.0-5.6 DG Lens is a telephoto zoom lens designed for Sigma mount cameras. With a maximum aperture of f/5.6, this lens allows for a smooth and precise focus through both auto and zoom options. Weighing 530g, it is a versatile and lightweight option for photographers looking to capture distant subjects with clarity and sharpness. Sigma's reputation for producing high-quality optics ensures that this lens is a valuable addition to any photographer's equipment collection.