I have GoPro Hero 4 Black and all in all, it really doesn’t need much lighting. You need the filters. depending on type of water this is very important. I dive the dark green cold murky waters of North east and every time i look at the video i say how i didnt see half the stuff the video shows. If you want quality color get a simple tray and a real good light, if you look at my picture of the eel, this is with gopro and simple all time on light, no strobe, on flex arm. most of the time i don’t use lights unless i want close up quality pictures of color or if im gong into a dark wreck. I mostly wear it on my head and just capture my dive. If i want to spend the dive with video and pictures i will put it on a tray with a light. I actually used to dive a high resolution HD cinematography camera and gave it up for the ease of the go pro. Post production with there free software is good for most things, and all in all I love the Go Pro for its simplicity. As far as the depth i have taken the case it comes in to 100’ with no problem. Anything beyond that and they have a specific dive case but honestly up here any wreck i am diving beyond 120’ is so dark a little camera with a simple light wnt capture much so i just leave it at home for those dives. Deep Caribbean is a different story.