Compare Samyang 20mm F1.8 ED AS UMC vs Laowa 4mm f/2.8 Fisheye vs Olympus 9mm F8 Fisheye Body Cap

[[{"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":"7 blades"},{"Ft":"Construction","Fn":"Form Factor","Fv":"Ultra Wide-Angle Prime Lens"},{"Ft":"Construction","Fn":"Image Size","Fv":"MFT"},{"Ft":"Construction","Fn":"Lens Mount","Fv":"Canon EF-M-mount, Fujifilm X-mount, Leica L-mount, Micro Four Thirds-mount, Sony E-mount"},{"Ft":"Construction","Fn":"Optical Formula | Elements","Fv":"7 elements"},{"Ft":"Construction","Fn":"Optical Formula | Groups","Fv":"6 groups"},{"Ft":"Dimensions","Fn":"Size | Diameter","Fv":"45 mm / 1.77 in"},{"Ft":"Dimensions","Fn":"Size | Length","Fv":"26 mm / 1.02 in"},{"Ft":"Dimensions","Fn":"Weight","Fv":"135 g / 4.77 oz"},{"Ft":"Function","Fn":"Angle Of View","Fv":"210° (fisheye)"},{"Ft":"Function","Fn":"Aperture","Fv":"f/2.8 ~ f/22"},{"Ft":"Function","Fn":"Autofocus","Fv":"No"},{"Ft":"Function","Fn":"Crop Factor","Fv":"2.0"},{"Ft":"Function","Fn":"Focal Length","Fv":"4 mm"},{"Ft":"Function","Fn":"Focal Length (35mm Equivalent)","Fv":"8.0 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":"Max Magnification","Fv":"0.11x"},{"Ft":"Performance","Fn":"Min Focus Distance","Fv":"80 mm / 3.15 in"},{"Ft":"Production","Fn":"Debut","Fv":"2018-04-20"},{"Ft":"Production","Fn":"Made In","Fv":"China"}],[{"Ft":"Construction","Fn":"Form Factor","Fv":"Ultra Wide-Angle Prime Lens"},{"Ft":"Construction","Fn":"Image Size","Fv":"MFT"},{"Ft":"Construction","Fn":"Lens Mount","Fv":"Micro Four Thirds-mount"},{"Ft":"Construction","Fn":"Material","Fv":"Plastic"},{"Ft":"Construction","Fn":"Optical Formula | Elements","Fv":"5 elements"},{"Ft":"Construction","Fn":"Optical Formula | Groups","Fv":"4 groups"},{"Ft":"Construction","Fn":"Optical Formula | Special Glass","Fv":"2 aspherical elements groups"},{"Ft":"Dimensions","Fn":"Size | Diameter","Fv":"56 mm / 2.20 in"},{"Ft":"Dimensions","Fn":"Size | Length","Fv":"13 mm / 0.51 in"},{"Ft":"Dimensions","Fn":"Weight","Fv":"30 g / 1.06 oz"},{"Ft":"Function","Fn":"Angle Of View","Fv":"100.5° Diagonal | 90.0° Horizontal | 67.4° Vertical"},{"Ft":"Function","Fn":"Aperture","Fv":"f/8 ~ f/8"},{"Ft":"Function","Fn":"Autofocus","Fv":"No"},{"Ft":"Function","Fn":"Crop Factor","Fv":"2.0"},{"Ft":"Function","Fn":"Focal Length","Fv":"9 mm"},{"Ft":"Function","Fn":"Focal Length (35mm Equivalent)","Fv":"18.0 mm"},{"Ft":"Function","Fn":"Focus Type","Fv":"Internal"},{"Ft":"Performance","Fn":"Max Magnification","Fv":"0.046x"},{"Ft":"Performance","Fn":"Min Focus Distance","Fv":"200 mm / 7.87 in"},{"Ft":"Production","Fn":"Accessory","Fv":"Lens hood sold separately"},{"Ft":"Production","Fn":"Debut","Fv":"2014-01-29"}]]