Fixed-lens HD video cameras provide a set viewing angle, so installers should plan mounting height, distance, and scene coverage before installation. Varifocal cameras use an adjustable lens, allowing technicians to fine-tune the viewing angle and image framing on-site for changing distances, entrances, or other surveillance areas.

When choosing HD video cameras for indoor spaces, consider the mounting location, dome or bullet form factor, required resolution, and whether a fixed or motorized varifocal lens suits the viewing area. For outdoor installations, look for IP67-rated options, infrared night vision, wide dynamic range, Power over Ethernet (PoE), and local microSD storage to support dependable video capture in changing light and weather conditions.

HD video cameras typically connect to a compatible network switch or network video recorder (NVR) over Ethernet, with Power over Ethernet (PoE) allowing one cable to carry both power and video data. Depending on the camera and system, recordings can be stored on a local microSD card or an NVR, while network connectivity supports live viewing and playback through a surveillance app or integrated control platform.

Many HD video cameras support local microSD card storage for recording and can connect to a network video recorder (NVR) for centralized video management. Compatible models may also integrate with smart home or security platforms, allowing users to view live video, review recordings, and manage cameras through an app or connected control panel.