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    Tamron 400 mm f/ 6.9 T mount
    Tamron 400 mm f/ 6.9 T mount

    Tamron 400 mm f/ 6.9 T mount

    400mm · f/7.1

    Overview

    The Tamron 400mm f/6.9 T-mount (model FO-69, circa 1963) is an early collectible consumer lens. It is very light and handy for a 400mm, with sturdy build and simple finish (luisalegria). Optically, it is sharp wide open with excellent contrast, though coating wear may reduce performance (luisalegria). Its main weakness is a long minimum focus of 30ft/9m (luisalegria). It suits collectors or users wanting a lightweight, low-cost long lens.