The Hercules 37mm .3X Ultra Fisheye Lens Adapter uses multi-coated, low-dispersion glass to produce crisp, high-definition video images. Great for dramatic effects and extremely wide fields. This fisheye adapter screws onto the front of your existing camcorder lens and bends a 180° view into a peephole-style circle. Straight lines become curved, noses become bulbous, eyes become goggly, and objects in your viewfinder will be closer than they appear.