27-37mm Snap On Insta-Wide Semi-Fisheye 0.3 Ultra Wide Angle LensAttaching this unique Semi-Fisheye Super Insta-Wide lens to your camcorder, you can produce a creative movie in wedding party, or make practically useful picture in your trade activity such as housing, insurance, construction and others.The Snap-on universal mount is for 27-37mm filter sizes. (Limited in use at most wideangle setting)Nominal 0.3X(Actual 0.3X/diagonal).