Progressive scan capability is found only in network cameras, but not all network cameras have this functionality. Progressive scan involves exposing and capturing the entire image simultaneously, as opposed to analog interlaced scanning, which captures only half of the lines in the image and then the other half 17 milliseconds later. With analog cameras, if an object is moving the image will become blurry. In a progressive scan image there is virtually no “flickering” effect, no jagged edges or blurring. In a video surveillance application, this is critical to enabling the user to view detail within a moving image such as a person running away. Progressive scanning consistently produces the best results in clarity and recognizing important details. Consider: when you press “pause” on a DVD, why is the picture quality better than a paused VHS tape? That’s right: progressive scan.