The Opteka 43mm 0.3X HD 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 of view--think sports, think dream sequences, think the HAL-9000 computer--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.