How do we focus?

In order to demonstrator a sharpness to an image,and allow and intention to focus and not. The works also together in order to change the distance of lenses,from the sensor and or the filming order to control the way in which light is captured.This is also done by how the light coverage’s precisely a point within the plane of the film or a  DSLR sensor,this means the image will become more in focus .

when looking through a viewfinder of any DSLR camera and you will see several dots, or squares, that represent individual points at which the camera is capable of focusing. This is in order to clearly view the focusing points ,even if this might seem obvious.  but not all of them are created equal. When you press the shutter button  halfway, some of these points will light up, indicating that everything at that specific spot is crystal clear and your photo will be nice and sharp.

this is an example of cross focus points to hep with ensuring the positioning of the camera.

However, the speed at which your camera can focus on one of the points, as well as how accurate the focus will be, depends greatly on whether the individual focusing point is a single or cross-type. Understanding the differences in how they operate can help you decide which ones to use to take better photos.This is a further example :

there are also many ranges within focus points,this can develop  of change the point within your camera with a button,and will be brought up upon the screen,showing the range of points.

below you can see my development of capturing the same focus point within a dogs face too.