The difference in brief
- Analogue: carries the image over coaxial cable to a DVR, and needs a separate power cable. Usually cheaper, but lower in resolution and flexibility.
- IP: a network camera carries the image digitally over network cable to an NVR, and one cable (PoE) carries image and power together. Higher resolution, more flexibility and more intelligent features.
Resolution and clarity
IP cameras give you consistently higher resolutions (4 and 8 megapixels and beyond) with detail that identifies a face and a plate. Modern analogue systems have improved (HD over coax) but remain below IP in maximum resolution and in analytic features such as zone and line-crossing detection.
Cabling and flexibility
IP’s major advantage: one cable (network) carries image and power over PoE, which simplifies the installation and lets you add cameras easily through the switch. Analogue needs two cables (coaxial plus power), and expanding it is harder. For a new project today, IP is the more logical choice.
When analogue remains the right choice
If you have existing coaxial cabling from an older system and you do not want to open walls to replace it, a modern analogue (HD) upgrade can give you a good improvement at lower cost without recabling. Here analogue is a smart economic decision, not a step backwards.
Cost and expansion
Analogue is usually cheaper at purchase, but IP saves over time through flexibility of cabling, expansion and features. If you intend to expand later or to connect to other systems (access control, analytics), start with IP. If the project is limited and sits on existing coaxial cabling, analogue may be enough.
