Amazon.com : Opteka 58MM 0.35x Fisheye Wide Angle Lens Compatible with Canon DSLR Cameras Including Macro Close Up Attachment : Camera Lenses : Electronics
Opteka 500mm/1000mm f6.3 Telephoto Lens for Nikon F D3500 D3400 D3300 D3200 | eBay
Opteka 6.5mm f/3.5 Manual Focus Aspherical Wide Angle Fisheye Lens with Cleaning Kit for Nikon D7500, D7200, D7100, D7000, D5500, D5300, D5200, D5100, D3400, D3300, D3200 and D3100 Digital SLR Cameras Camera