A computer monitor with 2,880 lines of resolution. In 2014, Apple introduced an iMac with a 27" Retina 5K display. With a resolution of 5120x2880, it doubled the horizontal and vertical pixels of the standard 27" 2560x1440 iMac, which continued to be available in the iMac line. Also in 2014, Dell debuted its 27" 5K UltraSharp monitor.
Because video editors can view a full 4K image with room for toolbars and menus at the same time.
Menus May Be Too Small
Although the resolution of a 5K monitor is extremely sharp, menus, toolbar text and icons can appear extremely small. Windows and Mac have built-in scaling for text and desktop icons, but not all menus and toolbars can be increased to a satisfactory size. Most software has yet to be designed with this high pixel density in mind. See 4K monitor
and native resolution
Lines of Resolution
This shows the relative difference in monitor/TV vertical resolutions.