What does the term “digital PTZ” mean when referring to video surveillance?

The term "digital PTZ" refers to the capability of digitally zooming and panning within a fixed camera's video feed. This technology allows users to manipulate the image after it has been captured, effectively simulating the effects of physical pan, tilt, and zoom movements without the need for a camera that is capable of physical motion.

This is particularly useful in video surveillance because it provides flexibility in monitoring specific areas without the expense and complexity of installing multiple moving cameras. The ability to focus on a subject and adjust the view digitally enhances situational awareness and can improve the effectiveness of surveillance. By using software to crop and enlarge areas of the video feed, digital PTZ allows operators to maintain detail and clarity in the areas of interest, even as they zoom in on specific events or details within the wider scene.

The other options describe features that are not related to the functionality of digital PTZ. The physical movement of a camera pertains to traditional PTZ (pan-tilt-zoom) cameras, light sensitivity relates to image quality in low-light conditions, and enhanced video storage concerns the efficiency of saving video data rather than manipulating the image itself.