Several 8K resolutions exist in digital television and digital cinematography. The term 8K refers to the horizontal resolution of these formats, which are all on the order of 8,000 pixels.
8K UHD is a resolution of 7680 × 4320 (33.1 megapixels) and is one of the two resolutions of ultra high definition television, the other being 4K UHD. In 2013, a transmission network's capability to carry HDTV resolution was limited by internet speeds and relied on satellite broadcast to transmit the high data rates.
8K UHD has four times the horizontal and vertical resolution of the 1080p HDTV format, with sixteen times as many pixels overall. Example:
- width: 1920 × 4 = 7680
- height: 1080 × 4 = 4320
8K is not only a ways off, but 4K is just know beginning to make inroads. Also, while 8K resolution may be applicable for very large screen applications, 8K resolution on smaller screen sizes would be overkill - and then there is issue of finding or producing 8K resolution content, and, finally the cost for both broadcasters and consumers for not only the TV upgrade, but other components.
Ultra high definition television
Ultra high definition television (also known as Ultra HD television, UHDTV or UHD) includes 4K UHD (2160p) and 8K UHD (4320p), which are two digital video formats proposed by NHK Science & Technology Research Laboratories and defined and approved by theInternational Telecommunication Union (ITU).
for more details : http://en.wikipedia.org/wiki/Ultra_high_definition_television
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