Category Archives: CCTV lens

The Benefits of CCTV Cameras

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CCTV is the abbreviation for closed circuit television and it refers to transmitting a signal to specific monitors. The sets of monitors that receive the signal from a CCTV camera are specific and their number is limited. Unlike broadcast television, a CCTV security camera doesn’t transmit the signal openly. The most common feature of CCTV is that of being used for surveillance, and, therefore CCTV security cameras are most likely to be found in crowded places or places where security is a must, such as airports, banks, ATMs, military facilities,Box Camera, casinos, etc. A CCTV camera can also be found in a corner shop or a gas station, if the owner chooses to install one in order to ensure protection for customers.

But CCTV cameras are not limited to watching airports and banks. They can also be installed in environments that are not comfortable for people,3g ip camera, or with the purpose to record a process that is observed and controlled from a control room. The conditions under which some industrial processes take place are dangerous for people and it is for this type of processes that CCTV cameras are designed. The law sometimes requires the installation of such CCTV cameras for industrial processes that take place inside reactors or inside the facilities that produce nuclear fuel.

A CCTV camera can now be found inside taxis as well, with the purpose to deter violence against the taxi driver. CCTV cameras are used in police vans when these are on a surveillance mission.

Although their primary purpose is that of ensuring security, the CCTV security cameras have caused an on-going debate, because of the fact that they are increasingly used in public places. The issue is that a CCTV camera violates the right to privacy, which some people consider more important than their own security.

CCTV cameras where initially used inside government facilities and when they began to be used outside these facilities, it was primarily for security inside banks. However, the system has experienced such a growth and the expenses of purchase and installation of a CCTV camera have dropped so much that it is now affordable and advisable for individuals to have their own CCTV security camera inside their homes. CCTV security cameras are now used successfully in parking lots and statistics show that car crime was significantly reduced after the installation of such cameras. However, as far as the other institutions are concerned, the installation of a CCTV security camera has yet to prove its benefits regarding crime deterring. Some communities have embraced this security system, others haven’t. In some cities, there are CCTV cameras everywhere, providing surveillance on estates, car parks, stations and so on. In other countries, CCTV security cameras are not so common because they meet strong opposition due to their lack of privacy.

Eventually it has been agreed that CCTV cameras don’t have a spectacular effect as far as crime prevention is concerned, especially if we consider the fact that these cameras often become targets of violence themselves. However, the effect on detecting criminals is the most considerable and the images caught by CCTV security cameras can be used to prosecute such criminals.

CCTV cameras can also be installed for safety, not just for security. Such cameras will be found in amusements parks, to make sure that no one is endangered when a ride starts, or on subway trains, to confirm that no person will be injured by the closing of the doors.

Traffic congestion and accidents are often noticed with the help of a CCTV camera, which is part of the system that monitors traffic. The registration plates of a car are sometimes read with the aid of a CCTV camera and the owner is fined in case of misconduct in traffic.

How does CCTV camera zoom work?

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CCTV cameras are a great tool to monitor your home or workplace, preventing theft or intruders. The cameras are often equipped with different lenses for different purposes, depending on the size of the space being monitored and the positioning of the CCTV camera. Many CCTV cameras have zoom lens that are controlled either manually or remotely. A zoom lens provides a larger and more flexible angle, creating either a wide view or a zoomed view to get a closer look at a person or object.

1,Note the zoom range on the CCTV lens. This figure will tell you how far the lens can move between a wide angle and a zoomed-in view.

2,Observe as a CCTV camera with an attached lens zooms in on a subject. As the zoom level changes, you may notice parts of the lens rotating. The lens uses a small motor to move the glass components and zoom level further or closer to the focusing elements.

3,Listen as the CCTV zoom lens moves in or out, if you have an electronic lens.

4,Adjust the zoom level of the lens, if you have a manual zoom lens. As you twist the zoom control, the elements inside the lens are moving away from or closer to the focusing elements, changing the view you see on your screen.

How to choose CCTV lens

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Auto iris lens is not the only choice,some CCTV cameras have optional 6mm/8mm/12mm/16mm fixed aperture lens. Sometimes if choose the right fixed aperture lens,the effect is better than use Auto iris lens.

Different lens for different ranges,6mm lens with the best effect between 5-10m, 8mm lens with the best effect between10-20m, 12mm lens with the best effect between 20-30mm ,16mm lens with the best effcet between 30-50m.

Choose the appropriate CCTV lens, to achieve the best results is the important.