The most recent upgrade in CCTV is the HD-SDI camera, the letters stand for High Definition Serial Digital Interface. The image resolution produced by HD-SDI cameras is up to 5X greater then a standard analog CCTV camera. It is the same quality image as HD TV and the familiar Blu-ray images. When viewing images, one of the main advantages of HD-SDI technology is that there is absolutely no loss of image information and no latency which does exist with IP network cameras. Another advantage of the HD-SDI camera is most use progressive scan technology instead of image interlace used in standard cctv cameras so motion images will have little or no image blur which may be critical in identification as shown below