Inon UFL-G140 SD Underwater Semi-fisheye Conversion Lens For GoPro Hero3, Hero3+ & Hero4 Cameras
Measured maximum angle of view of GoPro HERO4/HERO3/HERO3+ Black Edition is approx. 151_on land which will narrow down to approx. 94_ when we put the camera in genuine dive housing and bring it underwater due to different refraction index. The INON UFL-G140 SD provides ultra wide semi-fisheye imaging with angle of view 140_ underwater enabling wild underwater video work.