Aspect Ratio

What is Aspect Ration?


The height and width on an image is referred to as the aspect ratio. It defines its overall shape, and it is usually shown as W:H where W is width and H is height. The most common aspect ratio today is 16:9, which means that if the width is divided into 16 equal parts, the height of the TV or picture should be 9 parts.

  16:9 works great for TVs since that is the format modern TV shows are delivered on, but most movies are made using the cinema standard, which is 21:9. 21:9 is much wider, so parts of the screen need to be filled with black bars above and below the image in order to fit most TVs. These horizontal bars are called ''letterboxes''. Similar to movies, TV shows used to be made using a 4:3 aspect ratio, which is a lot more square than current TVs(this is why 16:9 is often called a widescreen aspect ratio). To fit modern TVs, vertical black bars or 'pillarboxing' is used. We've listed the most common aspect ratios in the table, but every TV sold today uses is 16:9.



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