How to set the aspect ratio of photos?

Open Photoshop software, click the file menu bar, select Open from the drop-down menu, click and select the photo to be adjusted, and then click Open. Click the image in the menu bar and select the image size from the drop-down menu. On the Image Size page, click the lock to the left of the width so that you can freely adjust the ratio of width to height, fill in the appropriate width and height, and then click OK.

At present, the aspect ratio of photos taken by most cameras is 3:2. From the development history of photography, 1: 1 is the earliest format, which mainly comes from the 6:6 ratio of large-format cameras. Later, with the rise of 3:2 and 4:3, the scale form of 1: 1 is no longer common, but it is not uncommon. For some users who are used to shooting in large and medium format, 1 is still their favorite. At present, many photographers often try the format of 1: 1 in order to pursue a retro effect.