Lens Lab
    Tamron 100-400mm F4.5-6.3
    Tamron 100-400mm F4.5-6.3

    Tamron 100-400mm F4.5-6.3

    100–400mm · f/4.5–6.3

    Overview

    The Tamron 100-400mm f/4.5-6.3 Di VC USD is a compact, lightweight telephoto zoom (1115g) with weather sealing and a 67mm filter thread. Optical strengths include good sharpness and contrast with low chromatic aberration, thanks to LD elements. Weaknesses include a modest maximum aperture and an optional tripod mount at extra cost. Build quality is high with smooth zoom and AF override. It suits wildlife and sports photographers seeking an affordable, portable 400mm reach, though fast action AF may lag behind premium lenses.