B00460WBBG Opteka Platinum Series 0.2X Low-Profile Ninja Fisheye Lens for 30.5mm Camcorders

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Direct 37mm mount, 30.5mm adapter included
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