Amazon.com : Opteka 58MM 0.35x Fisheye Wide Angle Lens Compatible with Canon DSLR Cameras Including Macro Close Up Attachment : Camera Lenses : Electronics
Professional .20x Super Wide Angle HD Lens + .35x Macro Fisheye Adapter Lens + UV Filter
Amazon.com : Hi Def 0.15x X-treme Fisheye Lens for Canon EOS M6 M50 (52mm or 58mm or 49mm Compatible) : Electronics
Canon RF 5.2mm f/2.8 L Dual Fisheye 3D VR Lens 5554C002 - Adorama