Lens Lab
    Sigma AF 50-500 mm f/ 4-6.3 APO EX HSM
    Sigma AF 50-500 mm f/ 4-6.3 APO EX HSM

    Sigma AF 50-500 mm f/ 4-6.3 APO EX HSM

    50–500mm · f/4–6.3

    Overview

    The Sigma AF 50-500 mm f/4-6.3 APO EX HSM ("Bigma") offers a unique 10x zoom range from normal to super-telephoto, making it versatile for wildlife, sports, and travel. Optically, it uses SLD glass to control aberrations, but sharpness drops significantly at longer focal lengths. Build quality is good for its EX line, with smooth rings and a solid tripod collar, though it is heavy at 4.1 lb and extends considerably. It suits photographers needing extreme reach in bright conditions, but the narrow aperture limits low-light use.