Sony has been leading the industry in 4K resolution--and while the Sony FDR-X1000 isn't the first mountable camcorder with 4K, it's certainly set up to compete with the likes of the GoPro Hero 4 Black.
At just four ounces, it certainly doesn't look like a powerful camera, yet it's capable of recording 4K footage at 30 fps and 28 Mbps. Switching to 1080p allows for the faster 60 fps frame rate. The camcorder includes a housing that offers waterproof, shockproof and dustproof protection, though it's splashproof even without the case.
Take a look at some sample footage released by Sony:
The GoPro has long been the camera to beat in the action category, but the Sony 4K Action Cam looks to beat the latest version in a few categories, at least on paper. Codecs make 4K video possible by reducing the file size, downsizing pixels to rebuild later. Sony utilizes a XAVC codec, which is a bit more robust than the GoPro’s H.264. Image stabilization points also go to Sony with their electronic system that should also help minimize vibrations when used on drones. GoPro is known to be a bit lacking in stabilization.
The Sony 4K Action Cam is also capable of taking still images at a 10 fps burst, at about 8 megapixels. An ultra-wide 170 degree perspective is also possible, though only by turning the stabilization off, otherwise that view is a still-solid 120 degrees.
The Sony 4K Action Cam looks like a top option for the category, and is even priced even with the GoPro Hero 4 Black. It's expected to be available beginning in February, 2015.