The aspect ratio states the comparison of width to height and is commonly used to describe the shape of a TV or computer screen. For example, the aspect ratio of an earlier standard-definition (SD) ...

How do I adjust the aspect ratio on my Mac’s screen? Changing your Mac’s screen aspect ratio is simple. The aspect ratio and resolution of your Mac’s display are adjusted using the Display preferences ...

Although 16:9 remains the most popular aspect ratio for TVs and computer monitors, Philips pushed the boundaries – the side ones, at least – with the introduction of its Cinema 21:9 Gold Series LED ...