Lens Lab
    Sigma UAF Zoom 55-200 mm f/ 4.5
    Sigma UAF Zoom 55-200 mm f/ 4.5

    Sigma UAF Zoom 55-200 mm f/ 4.5

    55–200mm · f/4.5

    Overview

    The Sigma UAF Zoom 55-200mm f/4.5 is a budget telephoto zoom for APS-C DSLRs, noted for its lightweight build and metal mount. Optical strengths include good sharpness at f/8-f/11, especially at the long end, low distortion, and effective flare control. Weaknesses are poor wide-open performance and slightly low contrast. Autofocus is audible and slower than HSM lenses. It suits beginners or budget-conscious users seeking an affordable telephoto zoom.