What are focus points?

Focus points are what your camera uses to focus. They’re basically little dots that exist all around the frame.

If you have a single active focus point in the center of the frame, your camera will part of the scene in the center of the frame (i.e., the area that sits “under” the focus point).

Whereas if you have a single active focus point in the corner of the frame, your camera will focus on the part of the scen in the corner of the frame.

Just to confuse you a little more… focus points can either be active or inactive. Active focus points are used by the camera to acquire focus, whereas Inactive focus points lie dormant (but can be activated by changing the AF area mode).