Lens Lab
    Sigma 300-800mm F5.6 EX DG HSM
    Sigma 300-800mm F5.6 EX DG HSM

    Sigma 300-800mm F5.6 EX DG HSM

    300–800mm · f/5.6

    Overview

    The Sigma 300-800mm F5.6 EX DG HSM, nicknamed 'Sigmonster', is a unique super-telephoto zoom offering 300-800mm at constant f/5.6. Optically, it is quite sharp, especially stopped to f/8, but not on par with modern prime lenses. Build quality is good, but the lens is massive (21.4 inches, 12.7 lbs) and lacks image stabilization. Handling demands a sturdy tripod and gimbal head; the tripod collar is smooth. It suits wildlife photographers willing to manage its bulk for versatile reach, though it shows its age against modern sensors.