Lens Lab
    Sigma 18-125mm F3.8-5.6 DC OS HSM
    Sigma 18-125mm F3.8-5.6 DC OS HSM

    Sigma 18-125mm F3.8-5.6 DC OS HSM

    18–125mm · f/3.8–5.6

    Overview

    The Sigma 18-125mm F3.8-5.6 DC OS HSM is a superzoom for APS-C DSLRs, offering a versatile 6x zoom range. Optically, it suffers from barrel distortion at wide-angle and strong pincushion distortion in mid-range, with mediocre sharpness and contrast even stopped down, plus visible chromatic aberration. Build quality is decent with good materials and a zoom lock, but the AF is noisy and not particularly fast, and manual focus is not full-time. It suits budget-conscious users seeking a single-lens solution for travel and walkaround photography, but not demanding shooters.