X-Mount Lens/APS-C Format 20mm (35mm Equivalent) Aperture Range: f/1.4 to f/16 Two Aspherical Elements Two High Refractive Elements Four Extra-Low Dispersion Elements STM Stepping AF Motor 9-Blade Diaphragm
Z-Mount Lens/APS-C Format 20mm (35mm Equivalent) Aperture Range: f/1.4 to f/16 Two Aspherical Elements Two High Refractive Elements Four Extra-Low Dispersion Elements STM Stepping AF Motor 9-Blade Diaphragm