21:9 Ultrawide

2560 x 1080 px sRGB 2.37:1 landscape

A 21:9 ultrawide reference ratio. The cinema standard for anamorphic film and the native aspect ratio of ultrawide monitors.

about the size of a desktop monitor

About this size

The 21:9 ratio is wider than the eye scans naturally, which makes it the format for cinematic frames where horizontal travel is the point. Anamorphic film, ultrawide desktop displays, and modern panoramic photography all live at or near this aspect ratio.

The composition trade-off is centre versus scan. Wide frames reward letting the eye move across the composition, but they need a clear visual anchor to stop the scan from feeling untethered.

Cinema frames
Wide art
Ultrawide displays

Pro tips

1 Compose along the horizontal axis. Let the eye travel across the frame and reward it with layered detail along the way.
2 Used for cinematic film stills and panoramic landscape compositions where vertical detail is less important than horizontal sweep.
3 Centre-weight the focal subject. The wide format gives peripheral context room without losing the anchor.