Analog cameras are discontinued, they are replaced with AHD, HD-CVI, HD-TVI, HD-SDI, EX-HD-SDI. *8MP camera is available in the market. Here is the issue or warning before you buy. If you purchased your DVR hybrid, tribrid, Pentaplex and all in one a few years ago or even few months this new 5MP, 6MP, and 8MP cameras might not work for you. If you are are buying the new pentabrid then all your old camera and new cameras they all will work.