Lens Lab
    Olympus G.Zuiko Auto-W 20 mm f/ 3.5
    Olympus G.Zuiko Auto-W 20 mm f/ 3.5

    Olympus G.Zuiko Auto-W 20 mm f/ 3.5

    20mm · f/3.5

    Overview

    The Olympus G.Zuiko Auto-W 20mm f/3.5 is the widest lens for the Pen F system, offering a 35mm equivalent focal length of 28mm on full-frame digital after cropping. Its imaging circle shows visible edges, requiring cropping to exclude vignetting, but aspect ratio changes can yield a slightly wider 25mm equivalent. Build and handling are typical for the system. It suits photographers comfortable with cropping and using half-frame lenses on full-frame cameras.