0.35X Fisheye Lens,52MM Super High Definition Wide Macro Fisheye Lens HD Panoramic Macro Fish Eye Lens for Digital SLR Cameras Camcorder with 52MM Thread: Amazon.co.uk: Electronics & Photo
Fisheye lens - Wikipedia
Opteka .35x HDA Super Wide Angle Panoramic Macro Fisheye Lens for JVC GZ-MG730, GZ-HD5, GZ-HD6, GZ-HD10, GZ-HD30, GZ-HD10, Digital Camcorders - Walmart.com
58mm 0.3X Ultra Fisheye Wide fish eye Lens for 58 mm 0.3 Camcorders DV camera|Camcorder Lenses| - AliExpress