Lens Lab
    Sigma AF 170-500 mm f/ 5-6.3 APO DG
    Sigma AF 170-500 mm f/ 5-6.3 APO DG

    Sigma AF 170-500 mm f/ 5-6.3 APO DG

    170–500mm · f/5–6.3

    Overview

    The Sigma AF 170-500 mm f/5-6.3 APO DG is a budget-friendly ultra-telephoto zoom suited for wildlife and sports. Optically, it delivers nice colors, good contrast, and pleasant bokeh, but suffers from chromatic aberration in high-contrast scenes and lens creep (Scott D Welch). Build quality is decent with a smooth zoom and excellent tripod collar, though it is heavy and autofocus can be slow (Scott D Welch). It works best on a tripod for sharp results; hand-held keeper rates are lower. Ideal for users seeking long reach at a low cost, accepting its limitations.