Lens Lab
    Tamron SP 500 mm f/ 8 Adaptall-2 model 55B
    Tamron SP 500 mm f/ 8 Adaptall-2 model 55B

    Tamron SP 500 mm f/ 8 Adaptall-2 model 55B

    500mm · f/8

    Overview

    The Tamron SP 500mm f/8 Adaptall-2 model 55B is a compact, lightweight mirror lens offering affordable super-telephoto reach. Optically, it delivers good contrast and can be sharp under ideal conditions, but resolving power is limited and it suffers from doughnut bokeh. Build quality is sturdy with a smooth focus ring, though the short focus throw and dark f/8 viewfinder make manual focusing challenging, especially handheld. It suits patient photographers on a budget who can use stable support and modern cameras with stabilization or high ISO performance.