Lens Lab
    Tamron 28-70 mm f/ 3.5-4.5 Adaptall-2 model 159A
    Tamron 28-70 mm f/ 3.5-4.5 Adaptall-2 model 159A

    Tamron 28-70 mm f/ 3.5-4.5 Adaptall-2 model 159A

    28–70mm · f/3.5–4.5

    Overview

    The Tamron 28-70 mm f/3.5-4.5 Adaptall-2 (model 159A) is a compact, versatile zoom with interchangeable mounts. Optically, it shows no noticeable difference between focal lengths and minimal corner falloff, but is a bit soft wide open compared to primes. Build quality is acceptable, with a better focus ring than zoom ring, which feels less durable. The 62mm filter version is superior to the 52mm version. It suits users needing a lightweight, adaptable lens for general use, especially with fast film to compensate for the variable aperture.