Lens Lab
    Sigma AF 100-300 mm f/ 4 EX DG HSM APO
    Sigma AF 100-300 mm f/ 4 EX DG HSM APO

    Sigma AF 100-300 mm f/ 4 EX DG HSM APO

    100–300mm · f/4

    Overview

    The Sigma AF 100-300mm f/4 EX DG HSM APO is a constant-aperture telephoto zoom with excellent build quality, featuring a metal body and smooth controls. Optically, it delivers very good sharpness at shorter focal lengths, especially on APS-C, but suffers from softness at the long end and potential de-centering issues, particularly on full-frame. It lacks image stabilization and weather sealing. The lens is well-suited for users seeking a versatile, fast telezoom for sports or wildlife on APS-C, but may not satisfy those needing consistent edge-to-edge sharpness at 300mm.