Understanding Lens Size and Viewing Angles Leave a comment

Not all CCTV cameras are the same. One of the most overlooked details is lens size, which directly affects how much area the camera sees.

A 2.8mm lens provides a wide field of view, perfect for covering large spaces like gardens or parking areas, but it sacrifices some detail at longer distances. A 12mm lens offers a narrower view but captures more detail — ideal for gates, entrances, or licence plates.

Choosing the right lens size is about balance. If you want to monitor general activity, go wide. If you need evidence-quality close-ups, go narrow. Many modern CCTV kits offer varifocal lenses, allowing you to adjust the zoom and field of view for different situations.

Understanding how lenses affect coverage ensures your cameras capture exactly what you need.