Depending on whether you are purchasing your video surveillance camera for home or for commercial use you are going to want to purchase the best resolution, but, you must buy the best resolution for the setting you will be putting the camera in. If you are buying for a home security system, you are not going to have to buy something as intricate as when you are buying a security video surveillance camera for a whole commerciabl business operation, which must be constantly monitored, at several locations, during the day, and over night hours as well. So, when buying your video surveillance system, it must match the area where it will be placed for best results.

For a home security system, going with something which offers a 720p resolution screen is probabaly going to meet your homes needs. Unless you live on a giant mansion, with several acres of land which are valueable, you may want to consider something a bit more intricate. If, you are going for the commercial building for a business, you are going to want to buy something with a little higher resolution, about 1080p and higher, just to ensure you are getting the best visibility.