What resolution is typically considered high definition (HD) for CCTV cameras?

The resolution that is typically considered high definition (HD) for CCTV cameras is 720p or higher. This designation means that the imagery provided by the camera has a resolution of 1280 x 720 pixels, which offers a significant improvement in clarity and detail compared to standard definition formats like 480p.

The term "high definition" refers to the enhanced level of detail that is perceptible to the human eye, as well as the ability to discern finer details in images—qualities that are important in surveillance scenarios. Cameras with a resolution of 720p or higher, such as 1080p (which is considered Full HD) or 4K, provide clearer and more detailed images, allowing for better identification of subjects and objects within the field of view.

While 480p and lower resolutions can still be used for some applications, they often lack the necessary detail for effective surveillance tasks, and 1080p or 4K resolution would exceed the minimum definition considered "high definition," thus offering even greater clarity. However, for the purposes of defining HD, 720p serves as the baseline standard.