B00460SW5A Opteka Platinum Series 0.2X Low-Profile “Ninja” Fisheye Lens for Canon VIXIA HF M31, M32, HF10, HF100, HF11, HF20, HF21, HG21, HR10, DC40, DC50, HV10, iVIS HV10, LEGRIA HF M31 and M32 Digital Camcorders

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Direct 37mm mount, adapter included (if necessary)
Produces an extraordinary degree of barrel distortion
Sleek low-profile design — Adds only 1cm of length to your camcorder
Ideal for filming that requires minimal drag
1 Year Opteka Warranty