SARS Technologies - What Security Camera Lens Size is Best? The security camera lens size, or focal length, measured in mm, determines the field of view. This is also called the viewing
Comparing Cinema Lenses To Still Camera Lenses | The Designer's Assistant
Does the Field of View depend on the lens size?
Lenses. Field of view and focal length
How Focal Length Affects Viewing Angle | Digital Camera Know-Hows | Digital Camera | Digital AV | Support | Panasonic Global