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How to Select the Lens Focal Length of IP Cameras

Source:Shenzhen Kai Mo Rui Electronic Technology Co. LTD2026-10-15

Many beginners who intend to purchase IP cameras find it confusing when choosing the lens focal length. The focal length of the lens determines the viewing angle and monitoring distance of the camera. A shorter focal length delivers a wider viewing angle but covers a shorter distance; a longer focal length provides a narrower viewing angle yet enables long-distance viewing. How should you select the lens focal length for IP cameras? Let’s take a look at the guide from Kaimorui.

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Methods for Selecting Lens Focal Length of IP Cameras

  1. For residential community security monitoring or general road surveillance, IP camera lenses ranging from 6mm to 15mm can basically meet the requirements.
  2. For intersection monitoring, the shooting area is large and high definition is required. Therefore, medium focal length lenses of 6mm to 60mm are suitable.
  3. For scenarios requiring large-area monitoring such as highways, national roads, river channels, airports and forests, long monitoring distance is the primary feature. Lenses of 10mm to 1100mm are generally selected to satisfy shooting demands.
  4. For monitoring environments such as ordinary meeting rooms, offices and elevator cabins, short fixed-focal lenses around 3mm to 12mm are sufficient.

The sharing on lens focal length selection for IP cameras ends here. The selection mainly depends on the actual application environment of the lens. If you have any questions, please feel free to consult our staff.

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