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How much video is really 4k?

How many people have the TV or equipment to record/display 4k?

And how much bandwidth does 4k really use?

Currently it is under 3% for both of the first two questions.

The real problem is bandwidth:

If you look at the HEVC testing that guys like Jan Ozer and Alex Zambelli have done, and look at the data Netflix has presented around their 4K encoding (Netflix’s current bitrate for 4K is 15.6Mbps), the bitrates won’t get down to 10-12Mbps anytime soon.

However, there's a new protocol coming that may help.

Google promises to dramatically shrink 4K bandwidth with upcoming VP10 video codec
By Roger Fingas
Monday, August 31, 2015, 06:09 pm PT (09:09 pm ET)
Google is working on a new open-source video codec, VP10, that should shrink the amount of bandwidth required for 4K video to half that of VP9, and a quarter of Apple's current preferred compression format, H.264.
VP10 should also offer a variety of visual enhancements over its predecessor including properties like a wider color gamut, faster framerates, and better dynamic range between highlights and shadows, CNet reported.
Google has been using VP9 for 4K on platforms like YouTube and Chrome, but partly because of Apple devices, H.264 is also effectively the industry standard. Chipmakers such as Samsung, MediaTek, Nvidia, and Broadcom have promised VP9 support however, and many 2015 TVs have VP9-ready decoders.
VP10 is said to be two years away, and require about 40 percent more work to decode than VP9.
In the interim VP9's main competition will be H.265, also known as HEVC. While it offers similar performance, Google may be able to gain ground because of the high patent royalties being asked for by the HEVC Advance group. These amount to 0.5 percent of all revenue stemming from HEVC-encoded video, as well as an 80-cent charge per mobile device and $1.50 per TV. By contrast, MPEG LA — the creator of both H.264 and H.265 — charges just 20 cents per H.264 device. Other companies may also demand patent revenues.
Cisco and Mozilla have developed alternative codecs known as Thor and Daala, and are further collaborating on a royalty-free standard called NetVC due around the same time as VP10.
Apple has yet to take a full step into the world of 4K, though it is believed that next-generation iPhones will support 4K recording (they do, at 60 frames per second — Swordmaker), and the company has quietly been amassing 4K material for iTunes, though it's not yet on sale.

4k is obsolete now. You will soon be using this camera : )
Here is a photo of the prototype. Kinda blurry photo of it : )

Canon’s 250-megapixel sensor can read the side of a plane 18km away. Take a snapshot and zoom in later to read the lettering 10 miles away.
http://www.zdnet.com/article/canons-250-megapixel-sensor-can-read-the-side-of-a-plane-18km-away/#ftag=YHFb1d24ec

The sensor is about 30 times sharper then 4k.
I bet the photos will still be blurry when taking pictures of Bigfoot....