SG-image AF 55mm F1.8 Lens for Sony E mount Full Frame STM Auto Focus A7C A9 a1
Focus Mode: AF (Autofocus). The mount also features a USB port for connecting to a PC for firmware upgrades. Focal Length: 55mm (35mm equivalent). Aperture Range: F1.8 – F16. Minimum Focusing Distance: 0.5m.