4K

4K is the most common term used for a new higher resolution that will succeed HD with 1080p in future. Analogous to 1080p the resolution of 4K is 2160p witch is exactly two-times more then FullHD.

Benefits of 4K stock footage in HD film production
Because most normal consumers do not have 4K displays to view films in 4K most production is still done in HD. But there are also benefits for HD films from 4K. The high resolution allows different types of cropping. 4K footage can be use more flexibel in post-production. Another benefit from 4K footage, is the higher color range that is recorded with 4K.

Links

 * 4K at blog.framepool