CCTV security cameras are an essential part of our daily fight against crime. It is one of the most effective defenses against the occurrence of crime in the future. This is the reason why
CCTV security cameras are used in places like shopping malls, universities, schools, shops, banks, government offices as well as private companies and other establishments. As a result of the growing popularity of CCTV cameras, the technology used has become more sophisticated while the machines themselves are becoming more affordable.
The market is flooded with different kinds of CCTV systems. Traditionally, CCTV systems are analogous systems which consist of a central recording device linked to any number of cameras. These days, the latest cameras are IP based. Various units are networked so that images may be viewed from anywhere. Digital storage makes it easy to store large videos.
When buying CCTV cameras, it is essential to pay special attention to the digital surveillance system. The CCTV system consists of the camera and its lens, a CCD sensor (Charge Couple Device) and a monitor. The image is captured by the CCD and is turned into a signal which is then sent to the monitor, which may be viewed or recorded.
Here are a few of the important decisions to be made while purchasing CCTV security cameras.
- Location: Will the camera/cameras be placed outdoors or indoors? What will the camera be capturing the faces of people or larger crowds?
- Light condition: Is the camera expected to record in low-light conditions or only when light conditions are optimal (as in day time recording). Black and white cameras are ideal for poor light conditions. Color cameras are useful only if light conditions are optimal.
- What is the expected field of view of the camera? It is necessary to decide on the width of the angle of vision
- Focal length is another important factor. How far away will the camera be placed from the objects that it is expected to capture?
- Finally, the budget plays an important role. It is essential to find the right figure and work your needs around it. Consider buying wireless cameras if you want to save money. Better quality images require cameras with better resolution. Entry level cameras typically have a resolution of 330 lines while high resolution cameras have 400 lines or more. Choose a monitor that is compatible with the chosen resolution.
IP based CCTV cameras are expensive. If used within homes, there are chances of the units getting stolen.
The above characteristics must be kept in mind while buying CCTV cameras for the home or establishment.
