1/2.3" 3.8MM Gopro Lens 16Megapixel M12 Mount Low Distortion for Hero 4 Sport Camera
Amazon.com: 5.4mm 10 Megapixel Flat Lens for GoPro Hero 3 3+ 4 Sport Cameras : Cell Phones & Accessories
4.35mm Rectilinear Lens for GoPro, Xiaomi Yi,DJI Phantom
The Consumer Electronics Hall of Fame: GoPro Hero - IEEE Spectrum
PeauPro72 4.35mm GoPro H4 Black – Peau Productions
12 mm Manual Focus Lens for GoPro 5/6/7/2018 PIXAERO
4K Resolution LENS 5.4mm 1/2.3" 10MP 60Degree Non Distortion Lens for GoPro Hero 3+/4 Xiaomi Yi 4K/4K+ EKEN H9R SJCAM Camera - AliExpress
RIBCAGE: LENS BUYING TIPS - BACK-BONE
What is the focal length (focal length range) of GoPro Hero 4? - Quora
5.4mm 10 Megapixel Lens for GoPro Hero 3 and 4 M12 1/2.3 Inch
MODIFIED GOPRO HERO4 SILVER CAMERA 3.5MM RECTILINEAR LENS RIBCAGE AIR BACKBONE | eBay
Back-Bone Gear 5.4mm 10MP M12 Mount Lens for Ribcage BBM1254 B&H
Amazon.com : GoPro HD HERO 4 Black Modified Camera with 5.4MM Narrow FOV 10MP Lens - Great for use with FPV DJI Phantom Zenmuse Gimbal by Stuntcams : Electronics
GoPro Replacement Lenses for Hero3/3+ Black from Peau Productions by Jeff Foster - ProVideo Coalition
GoPro Pro 3.5mm Mic Adapter AAMIC-001 – Stream Source