Amazon.com : Opteka 58MM 0.35x Fisheye Wide Angle Lens Compatible with Canon DSLR Cameras Including Macro Close Up Attachment : Camera Lenses : Electronics
Amazon.com : Rokinon HD8M-N 8mm f/3.5 HD Fisheye Lens with Auto Aperture Chip and Removable Hood for Nikon DSLR 8-8mm, Fixed-Non-Zoom Lens : Camera Lenses : Electronics