Raynox Conversion Fisheye HD-3037PRO Semi-Fisheye Lens, 0.3x Wide-Angle

Nominal magnification: 0.3x, Actual magnification: Diagonal 0.3x, Horizontal 0.42x By attaching the HD-3037PRO to the filter hole of a 4K/high-definition digital camera, it is possible to capture images with a diagonal magnification of 0.3x, which is an ultra-wide angle, and eliminates the large distortion typical of semi-fisheye lenses.