The top part of the diagram shows the big picture: light from the scene enters the camera and is recorded and stored.

The middle section shows the sequence in more detail.

(Bottom of graphic)

Control and measure

The bottom section describes how to control and measure the process at each stage.

Having a good understanding of how the image is formed, and how to control it, gives you more creative control over your final images.

It will take a little time to absorb all the relationships, terms and figures.