Aspect ratio is a term used to describe the ratio of an image’s width to its height. Expressed as ‘X:X’ where ‘X’ is a whole number.
Common Aspect Ratios
1:1
This results in a square image where both the width and height are equal in length. A 1:1 ratio is most commonly used for social media profile pictures, thumbnails, and small to medium-sized photos or artwork.
3:2
An aspect ratio of 3:2 is a common size, used often in digital photography and film alike. Interestingly, 3:2 is also the aspect ratio used for 35 mm film.
4:3
Used frequently for various PC monitors, digital cameras, and TVs, 4:3 is often an ideal aspect ratio to use for film or shooting photos or print photography that will also be displayed digitally on screen.
16:9
You’ve likely come across this aspect when watching movies on screen. It is also a common one used with widescreen TVs and computer monitors. Rectangle in shape, this ratio results in a size that’s slightly longer than the 4:3 ratio.