When a camera's magnification increases, its field of view?

When a camera's magnification increases, its field of view decreases. This is because magnification refers to how enlarged the image of an object appears. As you zoom in and make the subject larger in the frame, you are effectively narrowing the total area that the camera can capture.

In a practical sense, if you think about the act of zooming in on a distant subject, the details of the subject become clearer and larger, but you lose the surrounding context and wider scene. Therefore, high magnification allows for detailed observation of a specific object or area, but it compromises the ability to see a broader landscape or multiple elements within the camera's view. Understanding this relationship is crucial for effectively using CCTV systems, especially in scenarios where situational awareness and monitoring larger areas might be necessary.