During Monday's announcement of the new Panasonic Lumix G7, which features 4K video and 4K photo features, Panasonic announced plans for future 4K and 8K video and photo features, including 4K at 60fps and 120fps, as well as the ability to take 33 megapixel still images from 8K video footage. They say they are planning to have this technology ready for the Tokyo 2020 Olympic games. No further information was given at the time.
The Panasonic Lumix G7 records 4K video at 30fps, and then allows you to take 8.3 megapixel still images from the footage. You can select individual frames to save as JPEG images straight from the camera, or later with image processing software on the PC such as Adobe Lightroom. For more information on the 4K video and photo features, have a look at our Panasonic Lumix G7 hands-on preview.