4K resolution
4K resolution, also called 4K, refers to a horizontal display resolution of approximately 4,000 pixels. Digital television and digital cinematography commonly use several different 4K resolutions. In television and consumer media, 38402160 (4K UHD) is the dominant 4K standard, whereas the movie projection industry uses 40962160 (DCI 4K).
Da Vinci Systems
The da Vinci 2K Color Corrector, manufactured starting in 1998, was a completely revised color correction system that supported HDTV, SDTV, and 2K formats. The later system, the 2K Plus with improved color corrector tools was used on high-end DataCines and telecines like Thomson-Grass Valley's Spirit Datacine and Cintel's C-Reality & ITK Millennium. The 2K operated with a 4:2:2, 4:4:4 or 8:4:4 input in NTSC or Pal. In HDTV it operated with either 4:2:2 or 4:4:4 inputs. Many were interfaced to the Spirit DataCine.