Digital cameras can be divided into broadcast-grade, professional-grade, and home-grade equipment. Broadcast-level early stage equipment such as Sony's HDCAM, DigitalBetacam, XDCAM HD, XDCAM SD, MPEG IMX, Panasonic's DvcproHD, Dvcpro50, JVC's digital D-9 format and other equipment, these equipment can be divided into high definition (HD, resolution up to 1920x1080i) and standard definition (sD, resolution up to 720×576) devices. Broadcast-level equipment has good image quality, with vivid colors and grayscales and almost no distortion, but is expensive and suitable for the radio and television industry and professional film and television program production companies. Professional-grade digital equipment such as Sony's DVCAM format and Panasonic's Dvcpro 25 equipment have lower image quality than broadcast-grade equipment and are suitable for general television news production, education and teaching, industry, medical and other fields. Professional radio and television laboratories in universities are generally equipped with these equipment such as SonyDSR-1.90P and Sony DSR-250P. Some key universities have built professional studios with broadcast-level equipment such as BETACAM sP, BETACAM SX, MPEG IMX and Dvcpr050M cameras. Home-level equipment such as Sony and Panasonic's MiniDV, DVD disc, hard disk camera series and Samsung, Canon, JVC and many other brands of digital cameras, these cameras are mainly used for home entertainment, such as travel, weddings, birthdays, parties, etc. occasion. Average image quality, cheap, small and lightweight.