Opteka OPT-SC52FE Titanium Series 52mm 0.3X HD Ultra Fisheye Lens for Professional Video Camcorders Direct 52mm mount. Includes 52-52mm spacer ring HD, super anti-reflective scratch resistant multicoated glass optics for sharper images Produces an extraordinary degree of barrel distortion resulting in a 130 degree horizontal angle of view Exaggerates depth, pulling nearby objects closer and causing distant objects to recede into the background 5 Year warranty