Lens Lab
    Tamron SP 28-135 mm f/ 4-4.5 Adaptall-2 model 28A
    Tamron SP 28-135 mm f/ 4-4.5 Adaptall-2 model 28A

    Tamron SP 28-135 mm f/ 4-4.5 Adaptall-2 model 28A

    28–135mm · f/4–4.5

    Overview

    The Tamron SP 28-135mm f/4-4.5 Adaptall-2 (28A) is a heavy, all-metal push-pull zoom with a useful 28-135mm range. Optical strengths include good sharpness at f/5.6 and pleasing bokeh at close distances, with 135mm performance rivaling primes. Weaknesses include low contrast without a hood, a long 2m minimum focus in normal mode, and only 1:4 macro. Build is solid but heavy (~710g), with possible zoom creep. It suits manual focus users wanting a versatile walk-around lens on a budget.