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    Auto Mamiya / Sekor SX 21 mm f/ 4.0
    Auto Mamiya / Sekor SX 21 mm f/ 4.0

    Auto Mamiya / Sekor SX 21 mm f/ 4.0

    21mm · f/4

    Overview

    The Mamiya Sekor SX 21mm f/4.0 is a rare ultra-wide lens with optics similar to the Olympus 21mm f/3.5 (MFlenses). It delivers good image quality despite minor front element imperfections and internal dust (MFlenses). Build quality is decent, though the front ring may rattle if not tightened (MFlenses). It suits users seeking a compact, vintage wide-angle for M42 mount, but those preferring smoother focus may favor alternatives (MFlenses).