The Newly 4K LENS 3.8mm f/2.8 82d HFOV 16MP (No Distortion) is a new that is a direct replacement for most action cameras like the GoPro Hero 4, SJCAM, XIAOMI YI and others. It is 17.5*21.05mm, nearlly the same as gopro original ones.
It designed with 1/2.3" 16MP Low distortion < 2.8%, wider than popular 4.35mm and 5.4mm lens.
