I found this article on blackwater photography very helpful. It's well written and got a lot of useful information (including settings) in it, and also some great photos too!
https://www.divephotoguide.com/underwater-photography-special-features/article/blackwater-photography-anilao-philippines-sony-alpha-1-a1/
Hi everyone, my name is Harry. I'm currently based in Hong Kong and while I have dived here quite a few times here, I try and get out to the Philippines as much as possible!
Looking forward to being part of this community as I love diving and underwater photography (both macro and wide angle) and really enjoy reading about it when I'm not in the water!