Lens Lab
    Optomax 300 mm f/ 5.6
    Optomax 300 mm f/ 5.6

    Optomax 300 mm f/ 5.6

    300mm · f/5.6

    Overview

    The Optomax 300mm f/5.6 is a budget-friendly M42 telephoto lens, often found for £15-30. It offers decent contrast and definition, outperforming the Optomax 200mm f/3.5, but shows chromatic aberrations when shooting into the sun. Build is all-metal with a preset aperture (f/5.6-32) and smooth focusing, though close focus is poor at ~4.5 feet. It suits vintage lens enthusiasts seeking an affordable, lightweight telephoto for casual use, especially on mirrorless cameras.