It is actually critical to know what resolution implies when looking for a surveillance camera. CCTV cameras have a resolution range from 330 TVL (television lines) to 600 TVL. For colour resolution, CCTV cameras max out at 560 lines, however you can get black and white CCTV surveillance cameras in 600 TVL. IP security cameras are now accessible in substantially higher resolution, up to five megapixels. What does this imply?