Lens Lab
    Sigma 120-400mm F4.5-5.6 DG HSM
    Sigma 120-400mm F4.5-5.6 DG HSM

    Sigma 120-400mm F4.5-5.6 DG HSM

    120–400mm · f/4.5–5.6

    Overview

    The Sigma 120-400mm F4.5-5.6 DG HSM is a competitively-priced telephoto zoom with optical stabilization. Build quality is high, with smooth zoom and focus rings. Optical strengths include good sharpness at wide angles, especially at f/5.6-8, but performance degrades significantly beyond 200mm, with softness and unevenness at 400mm. Chromatic aberration is well-controlled via SLD elements. It suits landscape and wildlife photographers on a budget who can stop down for best results.