Lens Lab
    Mamiya/Sekor SX 50 mm f/ 2 Auto
    Mamiya/Sekor SX 50 mm f/ 2 Auto

    Mamiya/Sekor SX 50 mm f/ 2 Auto

    50mm · f/2

    Overview

    The Mamiya/Sekor SX 50mm f/2 Auto is a sturdy, all-metal M42 lens from the 1960s, often overlooked but capable of beautiful, contrasty images. Optically, it is sharp from f/4 but soft wide open, with significant flare and contrast loss when pointed at the sun. Build quality is robust, with a smooth focus ring, though less refined than some contemporaries. It suits vintage enthusiasts seeking a characterful, adaptable lens for mirrorless or SLR use, but those needing wide-open sharpness or low flare should look elsewhere.