The field of view of a security camera, also called the viewing angle, is the area that the camera can see. On a specification sheet, you will see the field of view measured in degrees. Click here for downloads and documentation for your product. The focal length of the lens affects the field of view. A shorter focal length lens captures more of the scene and therefore displays a larger field of view. Conversely, a longer lens magnifies the scene more, thereby decreasing the field of view. Think of the field of view as the angle between the two horizontal edges of the camera image.
Wide Angle Lenses
The camera with 90° field of view is wider and captures more objects in a scene, though each object takes up a small part of the camera image.
Narrow Angle Lenses
The camera with 60° field of view is more narrow and captures some objects in a scene, but in greater detail.
Lens Size and Field of View
Camera Lens Types