Sony has been spreading its imaging talents across a wide swath of camera products, from its mirrorless rigs to DSLR’s, point-and-shooters to action cameras. The new RX0 II (along with its predecessor, the RXO) is in a class by itself. It’s not an action camera — the appropriately named Action Cam line fills that slot more directly — and it’s not just a ruggedized point-and-shoot, either, since it doesn’t have the zoom capability or the typically larger sensor those cameras have. Instead, it’s simply the smallest and most durable camera for any of those users. It’s like they averaged out the needs of all the photographers in the world and compressed the result into a bulletproof 5-ounce box that fits in the palm of your hand.
The good: This RX0 II ($698) introduces a few key improvements, most notably internal 4K video and a flip-up/down rear screen. The waterproof cube now has image stabilization, and its baseline usability and quality make it a fine companion on most adventures. Finally, it’s crush-proof. Like, really crush-proof. You can place the RX0 II on a golf tee, drive it straight into the face of Half Dome, and get some pretty great footage of the whole affair. (In all seriousness, it’s rated to 440 pound-feet of crush-proofing, a number that likely reflects the glass and screen giving up first.) It’s got nicely granular programmability and lots of features from the larger prosumer cameras.
Who it’s for: The camera is clearly targeted toward vloggers and other types of creators, something Sony mentions explicitly in its media information. But that’s a bit misleading. After all, this is a mass-market — though relatively expensive — product, and the only fully ruggedized camera in Sony’s lineup. So while YouTubers and Instagrammers and folks making content professionally will certainly have their curiosity piqued, it’s for anyone looking to make photos and videos and who want a more compelling or more specifically capable alternative to the GoPros. It’s a top-shelf travel camera and yes, it takes great selfies, given the flip-up screen.

Watch out for: There are a few critical caveats with this camera, of particular note to anyone cross-shopping it against conventional action cameras such as the GoPro line. First, while it can now shoot 4K video directly to the camera — instead requiring tethering to a separate device that can process the stream, as in the original version — it’s not a true action camera. The field of view is tighter, which is a good thing for most shooters, so you won’t have the extreme wide-angle views that make mounting and aiming the camera easier, and the field of view isn’t universally in focus, so it has to focus with each shot. Finally, it’s not set up like an action camera, with simplified menus and quick, idiot-proof activation.
Alternatives: There aren’t many that sync up specifically with this camera’s features and capabilities. That said, in terms of size and general durability, the GoPro lineup or Sony’s own Action Cam models are roughly equivalent.