If you run DJI FPV and don’t care too much for gopros this lens will give that GoPro fisheye effect if you record in 4:3 ratio and stretch the recording with software to 16:9 ratio. This provides a better field of view as well. For installation use a heat gun on original lens for 30 seconds and use pliers to twist it off. Install adjustment ring on new lens and install new lens and fire up goggles and adjust to your needs. Perfect! Thank you!