Whether you want to monitor multiple directions in an airport terminal or a massive parking lot, covering vast areas has long been a challenge for security surveillance systems. The traditional analog cameras have other limitations with regards to resolution, depth and area coverage. However, modern IP cameras have mitigated their predecessors’ shortcomings by covering broad areas in high resolution.
These cameras fall into two main categories: fixed and the pan-tilt-zoom types. In the case of fixed, the camera is mounted in a stationary position. It means that the device only captures one scene unless it is physically located. In contrast, pan-tilt-zoom cameras are designed for remote directional and zooming capabilities.
Panning, Tilting, and Zooming Features Explained
It refers to the horizontal movement of a surveillance camera from a fixed position. Put simply, the camera posses the ability to scan an object horizontally or “back and forth.” Panning offers the benefit of scanning both mobile objects and vast field of view areas such as industrial firms.
It is the vertical movement of a surveillance camera, which is placed in a stationary point. This feature is beneficial in that it allows cameras to scan vertical fields of view such as rooftops and other outdoor structures.
The zoom-in function helps magnify subjects within a particular field of view. For example, a vehicle that is parked hundreds of feet away is big enough to see; however, it is hard to determine the license plates. The PTZ camera is fitted with lenses, capable of enlarging the size of the license plate; hence, making it easy to read even the license numbers and letters.
How PTZ Cameras Work
PTZ CCTV security cameras come equipped with particular mechanical elements that facilitate movement of both the camera and lens. These surveillance cameras allow automatic rotation whenever motion is detected. The range of movement differs from one model to another. Some cameras can make a 360-degree pan, meaning the device turns in a complete circle to prevent blind spots. In contrast, the 180-degree tilt enables the camera to view straight ahead, below and above its position. While a smaller range of movement functions aptly, it is prudent to get the full movement. This way, your camera will have more flexibility.
The Benefits of PTZ Surveillance Cameras
Large Field of View
Depending on where the camera is mounted, it can cover a whole 360-degree area. The majority of models allow users to set particular surveillance modes at pre-determined durations. Typically, the pan and tilt settings can be pre-programmed, making it easy to monitor large areas that would otherwise necessitate the use of multiple cameras. The use of a single camera means that you can minimize costs while maximizing your level of security.
Built-in Motion Tracking
Virtually all pan-tilt-zoom cameras are equipped with a built-in tracking device. This feature detects motion or tracks a subject; automatically panning, tilting or zooming to trail the person or object as it moves. It is beneficial in that it provides proof in the event of theft or vandalism. When purchasing a PTZ camera, ensure that it has this full motion tracking capability.
The night vision capability comes in handy when you want to monitor areas with poor lighting conditions. With surveillance cameras, the amount of lighting present is paramount in recording high-resolution images. The model of PTZ Speed Dome camera, which is developed recently, can capture media in total darkness. It is achieved with the aid of tiny LEDs that give out infrared light and a unique IR filter that comes with the camera lens. Infrared lighting cannot be seen by the human eye, but through the IR filter, the camera records images from any lighting conditions.
Another merit of using PTZ CCTV security cameras is that they are designed to withstand the harshest elements. It means that they can be utilized for outdoor applications regardless of the climatic condition; be it the wind, rain or snow.
Most PTZ cameras in the market have detection abilities of 100 feet on the low side and up to 1,000 feet on the pricier models. Capacity to zoom in on a subject ranges from 12X to 36X for the sophisticated PTZ Speed Domes.
As earlier mentioned, a single PTZ camera can cover a wider range of property than multiple fixed cameras. Therefore, instead of purchasing an array of surveillance cameras to monitor your garage, invest in one or two PTZ cameras. Buying PTZ cameras will not only save you on the initial cost but also the time spent on setting up the system. These PTZ cameras are available on Annkestore.
High Definition Options
Presently, PTZ cameras are available in IP versions, which deliver quality resolutions of between 720i to 1080P. Alternately, you can select the PTZ cameras that come equipped with HD-SDI technology, which offers high definition video in full 1080P resolution.
Vandal-proof and Aesthetic Design
Most of the PTZ surveillance cameras are made with a dome-shaped design. These cameras are made of a vandal-resistant plastic material; thus, they are prone to smashing and breakage. Moreover, they are often positioned high above the ground where people cannot reach them, which makes them resistant to tampering.
Multiple Alarm Inputs
The majority of PTZ CCTV security cameras comprise of four alarm inputs. Therefore, you can connect other vital devices including motion sensors, door contacts or glass-break sensors. If any action takes place in either of these hot spots, the PTZ camera is programmed to cease recording other scenes and zero in on this section to capture what is going on.
The pan, tilt and zoom cameras are useful for an array of security purposes. Usually, these units are controlled mechanically to give users a vast range of views and perspectives from the same camera. PTZ cameras are mainly used in larger spaces, where detailed and multiple imaging is required. They offer numerous benefits including built-in motion tracking, powerful zoom-in feature, and a vandal-proof design. The fact that one single PTZ camera covers a wide area also eliminates the need of installing multiple cameras; hence, save on cost and time.