Pentax HD Pentax DA 15mm F4 ED AL Limited

[{"Ft":"Construction","Fn":"Aperture Blades","Fv":"9 blades, Rounded aperture diaphragm"},{"Ft":"Construction","Fn":"Colors","Fv":"Black, Silver"},{"Ft":"Construction","Fn":"Form Factor","Fv":"Ultra Wide-Angle Prime Lens"},{"Ft":"Construction","Fn":"Image Size","Fv":"APS-C"},{"Ft":"Construction","Fn":"Lens Barrel","Fv":"Distance scale, DoF scale"},{"Ft":"Construction","Fn":"Lens Mount","Fv":"Pentax K-mount"},{"Ft":"Construction","Fn":"Motor","Fv":"Screw drive from camera"},{"Ft":"Construction","Fn":"Optical Formula | Elements","Fv":"8 elements"},{"Ft":"Construction","Fn":"Optical Formula | Groups","Fv":"6 groups"},{"Ft":"Construction","Fn":"Optical Formula | Special Glass","Fv":"1 Hybrid aspherical element, 1 ED glass element, High-grade multi-layer HD (High Definition) Coating groups"},{"Ft":"Dimensions","Fn":"Filter Diameter","Fv":"49 mm / 1.93 in"},{"Ft":"Dimensions","Fn":"Size | Diameter","Fv":"63 mm / 2.48 in"},{"Ft":"Dimensions","Fn":"Size | Length","Fv":"40 mm / 1.57 in"},{"Ft":"Dimensions","Fn":"Weight","Fv":"189 g / 6.68 oz"},{"Ft":"Function","Fn":"Angle Of View","Fv":"87.8° Diagonal | 77.3° Horizontal | 56.1° Vertical"},{"Ft":"Function","Fn":"Aperture","Fv":"f/4 ~ f/22"},{"Ft":"Function","Fn":"Autofocus","Fv":"Yes"},{"Ft":"Function","Fn":"Crop Factor","Fv":"1.5"},{"Ft":"Function","Fn":"Focal Length","Fv":"15 mm"},{"Ft":"Function","Fn":"Focal Length (35mm Equivalent)","Fv":"22.5 mm"},{"Ft":"Function","Fn":"Focus Type","Fv":"Unit"},{"Ft":"Function","Fn":"Image Stabilization","Fv":"No"},{"Ft":"Performance","Fn":"Max Magnification","Fv":"0.15x"},{"Ft":"Performance","Fn":"Min Focus Distance","Fv":"180 mm / 7.09 in"},{"Ft":"Production","Fn":"Accessory","Fv":"Lens Hood: built-in hood (supplied)"},{"Ft":"Production","Fn":"Debut","Fv":"2013-08-27"}]