Closed-Circuit Television (CCTV) has become the new standard of security and surveillance.CCTV is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors. CCTV was first used in 1942 to observe V2 rockets launching. CCTV has also been used to monitor unsafe industrial processes, such as manufacturing nuclear fuel.
In the 1970s, the United Kingdom began using CCTV due to bombings by the IRA. Today, many public areas in the UK are under surveillance. The British government claims that its CCTV network has resulted in a significant reduction in crime, but this claim is unproven.
Some criminals have found ways to evade CCTV cameras. Painting the lens, flashing laser pointers or jamming the wireless camera signal is common. Some criminals simply shoot out the cameras, although this can be countered by placing the CCTV cameras in bullet-resistant housing.
Opponents of CCTV have argued that it results in the loss of privacy and civil liberties. With the prevalence of CCTV in the United Kingdom, as well as Chicago and New York, it has been criticized as a method of controlling the general populace and not as a deterrent to crime. Questions have also been raised about who may obtain access to CCTV recordings, and concerns about an overall lack of anonymity have been raised. CCTV is beginning to transition to digital cameras. With high shutter speeds, memory capacity and pixel resolution, photos can be taken either when alerted by a motion detector or on a continuous basis. Boasting an easy setup and storage of images on the computer, it is proving quite popular. For more information about CCTV visit cctv-information.
In industrial plants, CCTV equipment may be used to observe parts of a process from a central control room; when, for example, the environment is not suitable for humans. CCTV systems may operate continuously or only as required to monitor a particular event. A more advanced form of CCTV, utilizing Digital Video Recorders (DVRs), provides recording for possibly many years, with a variety of quality and performance options and extra features (such as motion-detection and email alerts).
Surveillance of the public using CCTV is particularly common in the UK, where there are reportedly more cameras per person than in any other country in the world.There and elsewhere, its increasing use has triggered a debate about security versus privacy.
As for CCTV cameras, we do have one that is highly recommended as following:
(SKU: PB0004) 1/3 Sony CCD Box Color Camera 480TVL 3.5-8mm CCTV Lens
Specifications:
- Pick-up Device：1/3" SONY CCD
- Scanning Area：3.6mm(H)×2.7mm(V)
- Picture Element：PAL:752(H)×582(V)
NTSC:768(H)×494(V) TV System：PAL/NTSC
- Horizontal Resolution：480TV Lines
- Auto Electronic Shutter：PAL:1/50s-1/100,000s NTSC:1/60s-1/100,000s
- Lens Mount: CS
- Auto Iris Control：VIDEO/DC
Need any help? Please feel free to contact us via info@securitycamera2000.com, we always reply email within one business day.
Source:www.SecurityCamera2000.com
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