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Compare Opteka 6.5mm f 3.5 Fisheye Lens for Canon EF vs Samyang 8mm f 3.5 HD Fisheye Lens with Removable Hood for Canon vs Rokinon 8mm f 2.8 UMC Fisheye II Lens
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Opteka 6.5mm f/3.5 HD Aspherical Fisheye Lens with Removable Hood for Canon EOS 80D, 70D, 60D, 50D, 7D, Rebel T6s, T6i, T6, T5i, T5, T4i, T3i, T3, T2i and SL1 Digital SLR
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