Compare Samyang 35mm F1.4 AS UMC vs Samyang 20mm F1.8 ED AS UMC vs Voigtlander Nokton 21mm F1.4 Aspherical

[[{"Ft":"Construction","Fn":"Form Factor","Fv":"Wide-Angle Prime Lens"},{"Ft":"Construction","Fn":"Image Size","Fv":"Full-Frame"},{"Ft":"Construction","Fn":"Lens Barrel","Fv":"Physical aperture ring, Distance scale, DoF scale"},{"Ft":"Construction","Fn":"Lens Mount","Fv":"Canon EF-mount, Nikon F-mount, Micro Four Thirds-mount, Pentax K-mount, Sony A-mount, Sony E-mount, Samsung NX-mount"},{"Ft":"Construction","Fn":"Optical Formula | Elements","Fv":"12 elements"},{"Ft":"Construction","Fn":"Optical Formula | Groups","Fv":"10 groups"},{"Ft":"Construction","Fn":"Optical Formula | Special Glass","Fv":"2 high-refraction glass elements1 aspherical element groups"},{"Ft":"Dimensions","Fn":"Filter Diameter","Fv":"77 mm / 3.03 in"},{"Ft":"Dimensions","Fn":"Size | Diameter","Fv":"63 mm / 2.48 in"},{"Ft":"Dimensions","Fn":"Size | Length","Fv":"112 mm / 4.41 in"},{"Ft":"Dimensions","Fn":"Weight","Fv":"660 g / 23.32 oz"},{"Ft":"Function","Fn":"Angle Of View","Fv":"63.5° Diagonal | 54.4° Horizontal | 37.8° Vertical"},{"Ft":"Function","Fn":"Aperture","Fv":"f/1.4 ~ f/22"},{"Ft":"Function","Fn":"Autofocus","Fv":"No"},{"Ft":"Function","Fn":"Focal Length","Fv":"35 mm"},{"Ft":"Function","Fn":"Image Stabilization","Fv":"No"},{"Ft":"Performance","Fn":"Min Focus Distance","Fv":"300 mm / 11.81 in"},{"Ft":"Production","Fn":"Debut","Fv":"2010-09-16"}],[{"Ft":"Construction","Fn":"Aperture Blades","Fv":"7 blades"},{"Ft":"Construction","Fn":"Form Factor","Fv":"Ultra Wide-Angle Prime Lens"},{"Ft":"Construction","Fn":"Image Size","Fv":"Full-Frame"},{"Ft":"Construction","Fn":"Lens Barrel","Fv":"Physical aperture ring, Distance scale"},{"Ft":"Construction","Fn":"Lens Mount","Fv":"Canon EF-mount, Canon EF-M-mount, Fujifilm X-mount, Micro Four Thirds-mount, Nikon F-mount, Pentax K-mount, Samsung NX-mount, Sony A-mount, Sony E-mount"},{"Ft":"Construction","Fn":"Optical Formula | Elements","Fv":"13 elements"},{"Ft":"Construction","Fn":"Optical Formula | Groups","Fv":"12 groups"},{"Ft":"Construction","Fn":"Optical Formula | Special Glass","Fv":"Two aspherical + 3 ED elements, Ultra Multi Coating groups"},{"Ft":"Dimensions","Fn":"Filter Diameter","Fv":"77 mm / 3.03 in"},{"Ft":"Dimensions","Fn":"Size | Diameter","Fv":"83 mm / 3.27 in"},{"Ft":"Dimensions","Fn":"Size | Length","Fv":"88 mm / 3.46 in"},{"Ft":"Dimensions","Fn":"Weight","Fv":"497 g / 17.56 oz"},{"Ft":"Function","Fn":"Angle Of View","Fv":"94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical"},{"Ft":"Function","Fn":"Aperture","Fv":"f/1.8 ~ f/22"},{"Ft":"Function","Fn":"Autofocus","Fv":"No"},{"Ft":"Function","Fn":"Focal Length","Fv":"20 mm"},{"Ft":"Function","Fn":"Focus Type","Fv":"Internal"},{"Ft":"Function","Fn":"Image Stabilization","Fv":"No"},{"Ft":"Function","Fn":"Weather Resistance","Fv":"No"},{"Ft":"Performance","Fn":"Min Focus Distance","Fv":"200 mm / 7.87 in"},{"Ft":"Production","Fn":"Accessory","Fv":"Lens hood included"},{"Ft":"Production","Fn":"Debut","Fv":"2016-08-08"}],[{"Ft":"Construction","Fn":"Aperture Blades","Fv":"12, Straight"},{"Ft":"Construction","Fn":"Image Size","Fv":"Full-frame"},{"Ft":"Construction","Fn":"Lens Mount","Fv":"E-mount"},{"Ft":"Construction","Fn":"Optical Formula | Elements","Fv":"13 elements"},{"Ft":"Construction","Fn":"Optical Formula | Groups","Fv":"11 groups"},{"Ft":"Dimensions","Fn":"Filter Diameter","Fv":"62 mm"},{"Ft":"Dimensions","Fn":"Size | Diameter","Fv":"70.5 mm"},{"Ft":"Dimensions","Fn":"Size | Length","Fv":"79.5 mm"},{"Ft":"Function","Fn":"Angle Of View","Fv":"90.8 deg"},{"Ft":"Function","Fn":"Aperture","Fv":"F/1.4 - f/16"},{"Ft":"Function","Fn":"Focal Length","Fv":"21 mm"},{"Ft":"Performance","Fn":"Min Focus Distance","Fv":"0.25 m"},{"Ft":"Production","Fn":"Debut","Fv":"2019-05"},{"Ft":"Production","Fn":"Made In","Fv":"Japan"}]]