Sigma APO 800mm f/5.6 EX DG HSM Lens for Canon EF

A super telephoto prime offering immense reach, the Canon EF-mount Sigma APO 800mm f/5.6 EX DG HSM is further characterized by its advanced optical and physical design. Designated an apochromat, this lens uses a pair of extra-low dispersion elements to effectively eliminate color fringing and chromatic aberrations for high clarity and color accuracy throughout the aperture range. A multi-layer coating has also been applied to lens elements to control flare and ghosting for improved contrast and clarity.