Today's topic : 4K Resolution

4K resolution is a generic term for display devices or content having horizontal resolution on the order of 4,000 pixels. Several 4K resolutions exist in the fields of digital television and digital cinematography. In the movie projection industry, Digital Cinema Initiatives (DCI) is the dominant 4K standard.

• The television industry has adopted ultra high definition television (UHDTV) as its 4K standard. As of 2013, some UHDTV models are available to general consumers for under $1000. However, due to lack of available content, 4K television has yet to achieve mass market appeal. Using horizontal resolution to characterize the technology marks a switch from the previous generation, high definition television, which categorized media according to vertical resolution (2k,1080i, 720p, 480p, etc.). Note, 2K is recognized as the first prototype of UHD television.
• The first commercially available camera for cinematographic purposes was the Dalsa Origin, released in 2003
• 4K UHD is a resolution of 3840 pixels × 2160 lines (8.3 megapixels, aspect ratio 16:9) and is one of the two resolutions of ultra high definition television targeted towards consumer television, the other being 8K UHD which is 7680 pixels × 4320 lines (33.2 megapixels). 4K UHD has twice the horizontal and vertical resolution of the 1080p HDTV format, with four times as many pixels overall.