Just a tip from me. I scratched the lens of my go pro hero 3 black camera. Through this board I found a company who sells them for around 190 dollar. But I live in Europe and with clearing and VAT (outside EU) and shipping, this was very expensive. But I found a company in Germany who are selling the original Go Pro lenses at a reasonable price. I live in the Netherlands. The shop is called Vision Dimension http://www.vd-shop.de/index.php?language=en. The original lens with lens holder (so no focussing) is 89 euros. As I was searching for a really long time for this lens, i thought maybe i could help someone who is searching for it. I already took some footage and the result is great, same as the original.