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PTZ Security Cameras are the Maserati's of Security Cameras. PTZ stands for Pan, Tilt, Zoom, which signifies that the camera lens are able to be operated from afar and equipped to move and focus on objects far away. Pan-Tilt-Zoom security cameras are used heavily in government enclosures and elevated-surveillance commercial buildings. About Pan-Tilt-Zoom Security Cameras PTZ security cameras are the elite in CCTV. Being able to manually adjust your field of view is a vital benefit to a security installation. Most can easily reproduce a vehicle's license plate from as far away as 400 yards.1000 feet. There are PTZ cameras that you can manually manipulate (usually with a keyboard and joystick) and some that have self-tracking technology built into the brain of the camera. As you might imagine, PTZ security cameras are mostly only used for large businesses or important government buildings. The are usually not used in houses, mainly due to their size and price. Advantages of using a PTZ Security Camera Having the ability to pan a camera to the left and right, up or down, and zooming at long distances makes for a complete view in any zone of security. There are many advantages to this type of camera, and as you might imagine the main concern is the high cost in purchasing and operating these cameras. Most PTZ cameras are manually operated, meaning that a full time staff must be included with the cost structure of these types of cameras. Many large discount or department stores use the cameras to watch for inventory shrinkage, reducing losses by more than what it costs to purchase and operate these machines. However, the game is changing, as many PTZ cameras now have the ability to be set on auto tracking mode. Many of these auto-tracking models cost more than one thousand dollars, but these expenses pale in comparison to having to pay the salaries of security personnel to operate the non-tracking models. Z stands for Zoom! Capturing at a distance with PTZ Security Cameras If you want to see out to 450 yards away, then ptz cameras are the only option. The technology every year is being improved and these cameras are simply the best at seeing long distances, currently many companies offer a PTZ optical zoom lens with a magnification of 55X.
Although some models claim to have zooming greater than 55X, it is important to remember they are speaking of digital zoom. Digital zooming simply enlarges the pixels on the CCD and results in an image that has terrible resolution and is unusable! Stay away from digital zooming in CCTV. Optical Zoom lenses are available in 10X, 20X, 22X, 32X, and 55X. In summary, PTZ cameras are the most technologically advanced security cameras on the market and can Pan, Tilt, and Zoom either automatically or by a operator. As such, they are also the most pricey and are generally reserved for Homeland Security, governmental estates, and large retail stores. PTZ security camera are usually overkill for residential or light commercial zones.
For more information on PTZ cameras please see Security Camera Warehouse.
Article Source: http://EzineArticles.com/?expert=Matthew_Nederlanden
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