Sony FE 20mm f/1.8 G (SEL20F18G)

Key Features
E-Mount Lens/Full-Frame Format
Aperture Range: f/1.8 to f/22
Two Aspherical Elements
Three Extra-Low Dispersion Elements
Nano AR Coating and Fluorine Coating
Dual XD Linear Motor AF System
Linear Manual Focus Response
Focus Hold Button, Focus Mode Switch
Dust and Moisture Resistant
Rounded 9-Blade Diaphragm