I'm a Canadian cold water tech diver learning photography. I've gone from a GoPro, to a phone in housing with video light/diopter to now I've got an A6500 in a SeaFrogs Salted and some Z240s. Mostly doing CFWA with a bit of macro. I very recently bought a package with a GH4, Nauticam housing and WWL-1 (mainly for the WWL-1 and the price was right). Currently doing some port and lens planning around that MFT system.