Photoshop’s Magic Wand is handy for selecting the background of a photo, or an object that’s entirely one color. This is because it decides what to select based on colors ? once it hits a section that’s a different color from where it started, it’ll stop.

How to use the Magic Wand tool in Photoshop to easily edit backgrounds and other objects

You can use the Magic Wand tool in Photoshop to automatically select a specific section of the image. The Magic Wand uses colors to decide what should be selected, and you can change its “Tolerance” level. Once you’ve made your Magic Wand selection, you can edit that selection in several ways.

URL: How to use the Magic Wand tool in Photoshop to easily edit backgrounds and other objects