Why 4K Matters

Blackmagic 4K Production Camera
You've probably started to hear about 4K video, even if you're someone who is not that interested in, or who even shoots video. Why does it matter then?
Because, we are all consumers of video and "film" in our homes, in theaters, and on our computer monitors. During the past decade the transition has been made from SD (Standard Definition) to HDTV (Hi Definition), and one can't even buy an SD TV any more. Flat screen HD TVs are now so ubiquitous and inexpensive that they are found in almost every home in the developed world.
But the companies who make TV sets have a problem. They want to sell you new ones. But unlike early tube TVs in the 50's and 60's, there are no TV repair men any more. These things are now so inexpensive that if after some years it dies, it's easier to buy a new one than get the old one repaired. Thus the manufacturer's problem. How to get people to buy new ones? Those factories must be kept humming.
Beginning a few years ago t hey...