We office wide range of China made CCTV cameras at great wholesale prices. Different models, specification, prices of surveillance video camera are available. If you are looking for security cameras, CCD video cameras, surveillance camera, here is the right place!Don't know what lens you need for the CCTV surveillance video camera? Please try the following lens calculator to find out. Please choose CCD image sensor type, input the distance between the security video camera and view width in the following form and click "Calculate" button for estimate. Results for reference only.