4K resolution
This resolution is used mainly in digital cinema production, and has a total of 8,847,360 pixels with an aspect ratio 256135 (≈1910). It was standardized as the resolution of the 4K container format defined by Digital Cinema Initiatives in the Digital Cinema System Specification, and is the native resolution of all DCI-compliant 4K digital projectors and monitors. The DCI specification allows several different resolutions for the content inside the container, depending on the desired aspect ratio. The allowed resolutions are defined in SMPTE 428-1: The DCI 4K standard has twice the horizontal and vertical resolution of DCI 2K (), with four times as many pixels overall.
Camcorder
In early 2014 Sony released the FDR-AX100 which represents the next generation of camcorders. It is capable of shooting in 4K resolution. It currently has a price tag of £1,699 and 4K camcorders are not expected to come into the mainstream market for at least another eight to ten years as most current Blu-ray players are not capable of playing 4K video. Virtually all mainstream TVs are not 4K ready either with the only 4K TVs available being very expensive at £2,500 or over. The only means of archiving 4K video is the 100 GB Blu-ray Disc XL but the discs are very expensive.