Lens Lab
    Sigma AF 100-300 mm f/ 4 D EX IF APO
    Sigma AF 100-300 mm f/ 4 D EX IF APO

    Sigma AF 100-300 mm f/ 4 D EX IF APO

    100–300mm · f/4

    Overview

    The Sigma AF 100-300mm f/4 D EX IF APO is a well-built telephoto zoom with a constant f/4 aperture, offering excellent sharpness at shorter focal lengths but showing softness at 200mm and beyond, especially on full-frame cameras. Its metal construction, smooth controls, and non-rotating front element are praised. However, it is heavy and lacks weather sealing. It suits enthusiasts seeking an affordable, fast telezoom for APS-C bodies, where it provides an effective 150-450mm range.