
Knowing how to enable subject tracking autofocus on Samsung Galaxy phones and tablets is a must for any keen smartphone photographer. Subject tracking is where the camera, once focused on a subject, tracks that subject as it moves through the frame.
This is an incredibly useful feature for things that are moving relatively quickly, like pets or running children. However, it's also useful for slower moving subjects — if you're taking a succession of portraits, for example, subject tracking allows the person in the frame to move about a bit into different poses, ensuring your camera refocuses as they move and that you'll still be locked onto their face.