ITEM NAME:4.35mm Lens 1/2.3 Inch 10MP 72D Distortion For Sporty Cameras And Phan JC!E Feature: Focal Length: 4.35mm Lens 35mm Equivalent: 24.80mm Distortion: NO Black Vignetting: NO Horizontal Field of View (HFOV) : 72 ° Aperture (f Stop): 2.8 Back Focal Length (BFL): 3.65mm Native Camera Sensor Support: 1/2.3" Native Megapixel Support: 10MP Thread Material: Metal Optics Material: Glass Installed Filter: Daylight (IR-Cut) Works on Following Stock Cameras: Hero 4 Black & Silver, Hero 3+ Black & Silver, Hero 3 Black, Silver, White RibCage Modified GoPro Hero 4/3+/3 Black.Distortion: NO. 35mm Equivalent: 24.80mm. Focal Length: 4.35mm Lens. Black Vignetting: NO.