The Raynox HDP-2800ES High Definition 0.28x Diagonal Fisheye Conversion Lens is a compact, 3-group/3-element converter lens that provides an ultra-wide angle of view on HD camcorders and digital still cameras. When you need more dynamic shots, especially for effects and extreme sports, the HDP-2800ES widens and distorts your camera's point-of-view. Providing vignette-free images through zoom ranges up to 5x, the lens screws easily onto a 52mm filter thread, or--using one of the included adapter rings--a 37mm or 43mm filter thread. This makes the HDP-2800ES compatible with an especially large range of popular HD camcorders and DSLR lenses.