Analog security cameras, known as CCTV, comes in two forms classified by the build of the image sensor. They are either CMOS based, which is cheaper and produced lower quality images than the CCD camera.

To find the best camera to fit your needs, the first step is to identify what purpose you intend the security camera to serve. For example, a camera to monitor general crowd movement is a much lower requirement than if you need a camera that can pinpoint a face in the crowd.

There is a difference in cameras designed for indoor versus outdoor use. There are additional durability standards that the camera would need to ensure it survives the harsh conditions, unlike an indoor security camera.

Other things that will directly impact your buying decision include your budget, for the entire system as well as per individual security camera, as well as the size of your entire security system and the number of cameras you required. The number of cameras you require depends on the number of areas you wish to monitor.

One of most important consideration is lighting of the area you want to monitor. If you plan on installing an outdoor security camera to protect your detached car garage from thieves but buy a high quality day camera that isn’t designed for low light environments, your video feed will be different shades of black frames.

For nigh scenes, black and white cameras are recommended since they can deliver sharper images in low light settings. There are also day/night outdoor cameras with lighting sensors that adjust the camera for optimal recording at different lighting levels.

There are also dedicated night vision cameras for true low light recording. The minimum amount of light required for the camera to record properly is measured by the LUX rating. A camera of lower LUX rating requires less light and a rating of 0 means the camera is designed for complete darkness.

A cameras resolution measures the sharpness of the image the camera will capture; higher resolution, higher quality image. Entry level cameras start at resolutions of 330 lines upward to 400 lines in higher quality cameras.

When it comes to recording the video feed from the camera, most people will do with the DVR, which stands for digital video recorder. In more advanced monitoring systems there are controls for panning and zooming the camera in real-time to get closeups or follow a particular object.

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