Sigma 120-300mm f/2.8 APO DG OS HSM - Canon EF, Nikon F, Sigma SA Mount

The Sigma 120-300mm f/2.8 APO DG OS HSM is a high-speed telephoto zoom lens that provides a versatile focal range for sports and wildlife photography. It features an Optical Stabiliser (OS) providing approximately four stops of compensation and a Hyper Sonic Motor (HSM) for fast, quiet focusing. The internal focusing and zooming design ensures the lens length remains constant during operation. Its wide f/2.8 aperture throughout the zoom range allows for excellent subject isolation and performance in challenging light. On used examples, carefully test the Optical Stabiliser to ensure it engages and disengages smoothly without 'jumping' the image in the viewfinder. Check the tripod foot and collar for secure locking and smooth rotation. SDS examines the internal elements for dust or haze, which can occur in large telephoto lenses. We also verify the zoom mechanism for consistent tension across the range and check the mount for any signs of heavy professional use.