When do you use back button focus on a camera?
Why should I use this feature?
The back button focus will save you a lot of time. After all, you do not have to focus during the shooting. In this way, making a portrait series is much faster. Even if you do not have that much time to look up from your camera, this feature offers a solution. As with sports competitions. By following the subject while holding down the back button focus button, you capture the action quickly and sharply.