Here's a very good example of how you might use 4K if you're outputting to HD. In post production, you can change the composition by zooming in and panning around the 4K image - and still output HD!
We can't help being fascinated when people try to use very old techniques with very new technology, and here's a case in point
In many ways IBC2013 was a quiet show. Yes it boasted record visitor numbers, but few things happened out in Amsterdam that hadn’t been predicted beforehand: namely HEVC-powered 4K is on the horizon, the second screen is increasingly important to broadcasters’ plans, and higher frame-rate imaging is moving closer and closer to mainstream acceptance. Andy Stout looks back on five days in Amsterdam
Procam, a UK-based hire company, has shown a huge commitment to 4K by placing the biggest ever order for equipment by a hire company with Sony
Sony was in a difficult position when they presented their press conference today at the Mirage Ballroom in Las Vegas. They've already announced their F5 and F55 4K cameras in October last year (they've already sold 2000 of them) , and no-one was really expecting any ground-breaking news from them today. But that doesn't mean that the content of the news conference wasn't important, because the underlying seismic movement towards 4K was solidified by a few of the more subtle comments
It's wider, and it's curvier, and it's certainly not cheaper, but it could be the shape of things to come