How to use Focus Points.

To get your images to be crisp, or to allow  the camera and lens work together to change the distance of the lens from the sensor or film in order to control where the captured light converges.

There are many different types of focus points, you can change these focus points on your camera with a button or by selecting them on the screen, the image below will come up on the camera, this shows the range of points in which you can focus your camera on.