Raynox Raynox HD-3032 Pro, 0.3x High Definition Semi Fisheye Conversion Lens for 37mm Filter Thread, with 5 Adapters Rings and LS-03W Lens Shade Adapters Rings for 27mm & 30mm & 30.5mm & 43mm & 34P5mm Magnification:: Nominal 0.3X, Actual 0.34X/Diagonal, 0.44X/Horizontal(4:3mode) Lens Structure:: 2G/2E Optical coated glass elements Front filter size: none Mounting threads: 37mm