4K resolution

4K resolution talks about a horizontal display resolution of about 4,000 pixels.^[1] Digital television and digital cinematography commonly use several different 4K resolutions. In television and consumer media, 3840x2160 (4K UHD) is a common 4K standard. The movie projection industry uses 4096x2160 (DCI 4K). The 4K used for iMac's display is 4096 x 2304 px.

4K Resolution Media

Comparison of common broadcast resolutions
Description: * For more details and citations see Graphics display resolution – Overview * This file is only for the most common display resolutions and standards. * The 16:10 aspect ratio is equal to 8/5. * 21:9 (equal to 7/3 or ≈2.33:1)
Comparison of 4K DCI and UHD formats
Samsung UN105S9 105-inch (2,700 mm) ultra-high-definition 4K television
2013年資訊月，Sony攤位展示的Handycam消費型4K解析度攝影機FDR-AX1。
In full size, this image shows the difference between four subsampling schemes. The color images appear similar. The lower row shows the resolution of the color information.

References

↑ Goulekas, Karen (2001). Visual Effects in a Digital World. Morgan Kaufmann. p. 587. ISBN 9780080520711. 4K resolution: A general term referring to any digital image containing an X resolution of approximately 4096 pixels.

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[1] Goulekas, Karen (2001). Visual Effects in a Digital World. Morgan Kaufmann. p. 587. ISBN 9780080520711. 4K resolution: A general term referring to any digital image containing an X resolution of approximately 4096 pixels.

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