Compare Sigma 17-70mm F2.8-4 DC Macro OS HSM | Contemporary vs Pentax HD Pentax-DA 55-300mm F4.5-6.3 ED PLM WR RE

[[{"Ft":"Construction","Fn":"Aperture Blades","Fv":"7 blades, rounded"},{"Ft":"Construction","Fn":"Form Factor","Fv":"Standard Zoom Lens"},{"Ft":"Construction","Fn":"Image Size","Fv":"APS-C"},{"Ft":"Construction","Fn":"Lens Barrel","Fv":"Distance scale"},{"Ft":"Construction","Fn":"Lens Mount","Fv":"Canon EF-mount, Nikon F-mount, Pentax K-mount, Sigma SA-mount, Sony A-mount"},{"Ft":"Construction","Fn":"Material","Fv":"Plastic barrel, metal mount"},{"Ft":"Construction","Fn":"Motor","Fv":"Micro-type ultrasonic"},{"Ft":"Construction","Fn":"Optical Formula | Elements","Fv":"16 elements"},{"Ft":"Construction","Fn":"Optical Formula | Groups","Fv":"14 groups"},{"Ft":"Construction","Fn":"Optical Formula | Special Glass","Fv":"2 FLD (\u0026#34;F\u0026#34; Low Dispersion) glass elements, 1 SLD (Special Low Dispersion) glass element, 3 aspherical glass lenses including double sided aspherical lens groups"},{"Ft":"Dimensions","Fn":"Filter Diameter","Fv":"72 mm / 2.83 in"},{"Ft":"Dimensions","Fn":"Size | Diameter","Fv":"79 mm / 3.11 in"},{"Ft":"Dimensions","Fn":"Size | Length","Fv":"82 mm / 3.23 in"},{"Ft":"Dimensions","Fn":"Weight","Fv":"465 g / 16.43 oz"},{"Ft":"Function","Fn":"Angle Of View","Fv":"80.7° Diagonal | 70.4° Horizontal | 50.4° Vertical (wide) ~ 23.3° Diagonal | 19.5° Horizontal | 13.0° Vertical (tele)"},{"Ft":"Function","Fn":"Aperture","Fv":"f/2.8–4 ~ f/22"},{"Ft":"Function","Fn":"Autofocus","Fv":"Yes"},{"Ft":"Function","Fn":"Crop Factor","Fv":"1.5"},{"Ft":"Function","Fn":"Focal Length","Fv":"17 mm ~ 70 mm"},{"Ft":"Function","Fn":"Focal Length (35mm Equivalent)","Fv":"25.5 mm ~ 105.0 mm"},{"Ft":"Function","Fn":"Focus Type","Fv":"Internal"},{"Ft":"Function","Fn":"Image Stabilization","Fv":"Yes"},{"Ft":"Function","Fn":"Zoom Type","Fv":"External zoom"},{"Ft":"Performance","Fn":"Max Magnification","Fv":"0.36x"},{"Ft":"Performance","Fn":"Min Focus Distance","Fv":"220 mm / 8.66 in"},{"Ft":"Production","Fn":"Accessory","Fv":"Lens Hood: LH780-03 (supplied)"},{"Ft":"Production","Fn":"Debut","Fv":"2012-09-17"},{"Ft":"Production","Fn":"Made In","Fv":"Japan"}],[{"Ft":"Construction","Fn":"Aperture Blades","Fv":"9 blades, Rounded blades"},{"Ft":"Construction","Fn":"Colors","Fv":"Black"},{"Ft":"Construction","Fn":"Form Factor","Fv":"Super Telephoto Zoom Lens"},{"Ft":"Construction","Fn":"Image Size","Fv":"APS-C"},{"Ft":"Construction","Fn":"Lens Mount","Fv":"Pentax K-mount"},{"Ft":"Construction","Fn":"Motor","Fv":"Stepper motor"},{"Ft":"Construction","Fn":"Optical Formula | Elements","Fv":"14 elements"},{"Ft":"Construction","Fn":"Optical Formula | Groups","Fv":"11 groups"},{"Ft":"Construction","Fn":"Optical Formula | Special Glass","Fv":"ED elements + HD and SP coatings groups"},{"Ft":"Dimensions","Fn":"Filter Diameter","Fv":"58 mm / 2.28 in"},{"Ft":"Dimensions","Fn":"Size | Diameter","Fv":"77 mm / 3.03 in"},{"Ft":"Dimensions","Fn":"Size | Length","Fv":"89 mm / 3.50 in"},{"Ft":"Dimensions","Fn":"Weight","Fv":"471 g / 16.64 oz"},{"Ft":"Function","Fn":"Angle Of View","Fv":"29.4° Diagonal | 24.6° Horizontal | 16.6° Vertical (wide) ~ 5.5° Diagonal | 4.6° Horizontal | 3.1° Vertical (tele)"},{"Ft":"Function","Fn":"Aperture","Fv":"f/4.5–6.3 ~ f/22–32"},{"Ft":"Function","Fn":"Autofocus","Fv":"Yes"},{"Ft":"Function","Fn":"Crop Factor","Fv":"1.5"},{"Ft":"Function","Fn":"Focal Length","Fv":"55 mm ~ 300 mm"},{"Ft":"Function","Fn":"Focal Length (35mm Equivalent)","Fv":"82.5 mm ~ 450.0 mm"},{"Ft":"Function","Fn":"Focus Type","Fv":"Extending front"},{"Ft":"Function","Fn":"Image Stabilization","Fv":"No"},{"Ft":"Function","Fn":"Weather Resistance","Fv":"Yes"},{"Ft":"Function","Fn":"Zoom Type","Fv":"External zoom"},{"Ft":"Performance","Fn":"Max Magnification","Fv":"0.3x"},{"Ft":"Performance","Fn":"Min Focus Distance","Fv":"950 mm / 37.40 in"},{"Ft":"Production","Fn":"Accessory","Fv":"Lens Hood: PH-RBK58 (supplied)"},{"Ft":"Production","Fn":"Debut","Fv":"2016-06-08"}]]