https://www.cnet.com/news/red-8k-3d-camera-uses-hydrogen-one-phone-as-viewfinder/

It was a new unreleased 8K Red camera that captures 3D content. Lucid made software for the camera which allows it to simultaneously display 3D video as it's being recorded.

Red partnered with Lucid to create a high-end 3D cinema camera. It uses the Red Hydrogen One phone and its 4-View screen to show 3D content in real-time.