Lens Lab
    Tamron SP 90 mm f/ 2.5 Adaptall-2 model 52BB
    Tamron SP 90 mm f/ 2.5 Adaptall-2 model 52BB

    Tamron SP 90 mm f/ 2.5 Adaptall-2 model 52BB

    90mm · f/2.5

    Overview

    The Tamron SP 90mm f/2.5 Adaptall-2 model 52BB is a manual-focus macro lens praised for its sharpness and pleasant bokeh. It offers 1:2 native magnification, extendable to 1:1 with an optional tube or teleconverter. Build is solid but heavy, with a plastic aperture ring and smooth focus ring. Weaknesses include a short infinity focus throw and potential purple reflections in certain lighting. It suits macro and portrait photographers seeking a sharp, classic lens on mirrorless or DSLR systems.