Lens Lab
    Pentax FA 28-105 mm f/ 4-5.6 Power zoom
    Pentax FA 28-105 mm f/ 4-5.6 Power zoom

    Pentax FA 28-105 mm f/ 4-5.6 Power zoom

    28–105mm · f/4–5.6

    Overview

    The Pentax FA 28-105mm f/4-5.6 Power zoom offers good image quality, sharp across focal lengths, especially at f/8-11. It has solid weather sealing with a rubber O-ring. Build is light and compact with textured grips, but the manual focus ring spins continuously. The variable aperture is a compromise for size. It suits Pentax full-frame or APS-C users needing a versatile walkabout lens for general, night, or astrophotography.