This is a TTArtisan-made lens that comes with auto focus for best possible result. Also, it is a fish-eye and wide lens.
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TT Artisan Fisheye Lens 11mm f 2.8 Connector Canon R Ultra-Wide Angle Lens for Full Format in Aluminium Housing Viewing Angle 180 Degrees TTAL1128CR, Black
WEX Photo Video
TTArtisan 11mm f2.8 Lens for Canon RF - Black