Lens Lab
    APO Tair-1 300 mm f/ 4.5
    APO Tair-1 300 mm f/ 4.5

    APO Tair-1 300 mm f/ 4.5

    300mm · f/4.5

    Overview

    The APO Tair-1 300 mm f/4.5 is a solidly built metal-and-glass lens from the Soviet era, weighing 1550g and measuring 246mm long. Optically, it performs passably wide open but improves significantly at f/5.6, with some edge distortion and blue flare on bright stars. Focusing requires force and is difficult for moving subjects; a tripod is recommended. It suits astrophotographers or patient still-life shooters who can manage its weight and manual operation, but not action or handheld use.