Lens Lab
    Promaster AF 28-105 mm f/ 4.0-5.6
    Promaster AF 28-105 mm f/ 4.0-5.6

    Promaster AF 28-105 mm f/ 4.0-5.6

    28–105mm · f/4–5.6

    Overview

    The Promaster AF 28-105 mm f/4.0-5.6 is a versatile zoom lens with good sharpness across focal lengths, especially between f/8 and f/11. It features solid weather sealing with a rubber O-ring. Weaknesses include a variable aperture and a manual focus ring that spins continuously without stops. The lens is light, compact, and pleasant to handle, making it a great walkabout lens for general photography, including night and astrophotography. It suits Pentax K-mount users seeking an affordable, weather-sealed zoom.