The age of 4K may have officially begun, but the world still has some catching up to do. Case in point: You can't actually watch this weekend's Super Bowl in 4K (a.k.a. Ultra HD), even if you have a 4K TV, since there isn't yet a broadcast or cable standard for ultra-high-def format. Even the live stream is "just" in 720p.
That doesn't mean 4K won't make a difference at the big game. Fox will have six 4K cameras at MetLife Stadium — two on the sidelines, two on the goal lines and two on the end lines — specifically for the network's "Super Zoom" feature. When the broadcast needs to get in tight on some action, the feed will crop a 720p "window" from the 4K picture captured by those cameras. That way, Fox can get tight, high-res images without needing to zoom in optically.