Whats in the box:"Vortex" Fisheye 0.2x HD LensThe Opteka Vortex Lenses produce the highest distortion of any fisheye lens available today. Adding the Opteka Vortex lens to a camera or camcorder zoom lens results with an angle of view up to 220Deg.-Lens Construction: 6 Elements / 4 Groups-Magnification: 0.2X-Angle of View: Up to 220 Degrees-Rear Mount Diameter: 37mm-Front Element Diameter: 101mm (Does not accept filters)-Length: 75mm-Weight: 610g/21.5oz.-Includes Lens Pouch & Lens Caps