Very good lens for my gopro 4+. You need to find a way to fix the lens inside the camera because it doesn't stop turning. When you see that the lens is in focus (make test and you'll get the focus point) you have to glue or fix it with something. I made a silicon rubber ring, so the lens stays on its place and doesn't turn, and keep the lens centered, because if is not centered, you'll se not a full focus image. But, it is a good lens and it worked, Thanks.