Having acquired a GoPro Hero 4 recently, I am also looking at how to set it up. Right now I have a Sola800 and an AdventureX 1200 making somehting like 2000 lumen, and I am hoping this will work for nearby stuff, say, a trumpetfish at 1m. I fear it will be no use for sharks or schools of jacks etc. I am willing to try with filters (any advice which ones?) before plunging into massive video lights. Appreciate any advise.