https://www.techradar.com/news/best-4k-camera

2016 welcomed a barrage of new cameras equipped with 4K video recording, and now almost every major camera manufacturer has implemented 4K shooting somewhere in their lines. 

Perhaps most impressively, the technology has been successfully stretched over models of all billings. So, whether you’ve only got a few hundred pounds to spend or you're willing to stretch to a handsome four-figure sum, it’s likely you can afford a camera with the technology on board.