SURFnet and Waag gave a CineGrid/4K demonstration during the Dutch Innovation-estafette on 12 November 2013. A new selection of 4K material was shown, compiled by Thomas Scholz, former manager of the CineGrid Studio at the Waag.
CineGrid Amsterdam was a three year research project in the field of the production, distribution and screening of image and sound of unprecedented quality. The image of 4K is at least four times sharper than HDTV; the sound is uncompressed and pure. 4K resolution is a generic term for display devices or content having horizontal resolution on the order of 4,000 pixels. In consumer electronics the name 'Ultra-HD' has now been adopted.
An good example of 4K are the images coming from the international space station ISS. These images can form a fascinating 'time-lapse' video.
Here is a playlist of some 4K productions on YouTube that can actually be shown in Ultra-HD (with the right display and enough bandwidth). A nice example is the underwater world movie called 'Secret World':
