Opteka 6.5mm f/3.5 Fisheye Lens for Canon EF OPT65C B&H Photo
Opteka 6.5mm f/3.5 HD Aspherical Fisheye Lens with Removable Hood for Fuji X-Pro1, X-T1, X-E2, X-E1, X-M1, X-A2, and X-A1 FX Digital Mirrorless Cameras - Walmart.com
Amazon.com : Opteka 6.5mm f/3.5 HD Aspherical Wide Angle Fisheye Lens with Optical Cleaning Kit for Canon EOS 80D, 77D, 70D, 60D, 60Da, 50D, 7D, T7i, T7s, T7, T6s, T6i, T6, T5i,
Opteka 6.5mm f/3.5 HD Aspherical Fisheye Lens - Walmart.com