The Olympus OM-D E-M5 Mark II is a powerful 4/3 mirrorless camera. It has 16-megapixels but is also capable of shooting in a 40-megapixel (64 in RAW), high-resolution shooting mode. The E-M5 Mark II also has WiFi to make sharing photos with your dive buddies even easier. This camera is a great option for photographers who travel often and want a camera that won’t break the bank.
This is the Swiss army knife of tough cameras, equipped with ring lights around its lens that function as a torch as well as a macro light, allowing you to see what you're doing underwater as well as keep your subjects illuminated. While it's not a big update over the previous WG-50, it's got a fair few nifty features that make it worth consideration. The microscope mode lets it focus at distances as close as 1mm, while the Handheld Night Snap captures several images of a low-light scene in quick succession and blends them together to create a blur-free composite image. This is all housed in a body with serious protections, able to stay submerged in 14m of water for up to 2 hours.
Then there's resolution and video quality. You'll want a camera that can record in 4K for sure. The top-end models from DJI and GoPro offer 60fps 4K with digital stabilization that's absolutely incredible. They're also not limited to ultra-wide views; you can set a narrower angle to remove lens distortion, making them solid choices for vlogging and travel logs.