Factors to Consider When Purchasing a PTZ IP Camera
PTZ IP cameras are commonly used for surveillance in large home compounds and public areas such as commercial car parks, stadiums and conference halls. PTZ stands for Pan Tilt Zoom, and that means you can use the IP software for cameras through the internet or your network to manipulate what the IP camera displays.
Basically, a PTZ IP camera lets the user view real time images of the protected areas over the internet. You can simply monitor your office, home, building, yard or anywhere from miles away using a PC or a high end smartphone, tablet or PDA. Some network cameras even feature built-in Web server functions such that the IP camera doesn’t necessarily need to be connected to a computer.
DESIGN
IP PTZ cameras are traditionally spherical in shape, and this is mainly because they are meant to be completely mobile. Either the network camera itself (the sensor and camera mechanism) has been designed to take the shape of a sphere, and held so that it can pivot accordingly, or the camera is structured more traditionally and cased in a spherical protective bubble where it can tilt, pan and zoom and take images from within the shield.
NIGHT VISION
IP cameras with night vision capabilities come with built-in LED lighting to enable object visibility in dark settings, or at night. For outdoor surveillance, specifically in places without artificial lighting, night vision cameras may come in handy.
PTZ vs PT
Some IP cameras can only pan and tilt but not zoom. The two functions will usually be enough if the area you want to cover is small, like, say, your living room. However, if you want to cover a large area such as a shopping mall, an IP camera with the zoom function will be more effective.
HOW DO THEY WORK ?
PTZ IP cameras are typically controlled using remote systems. Users can do an initial configuration to have the camera moving and rotating in a certain predetermined pattern, or do it manually using a keyboard or mouse controlled interface. The angle of the lens can also be manually controlled, and this facilitates automatic position adjustment of the camera.
BENEFITS OF PTZ IP CAMERAS
· User does not need to be close to the camera to operate it.
· Requires little maintenance after it has been installed (except for regular cleaning of course).
· Has 360-degree mobility. This way, it can detect and track objects as they move in the covered area as long as the target object is within lens range.
Factors to Consider When Purchasing a PTZ IP Camera
INDOOR OR OUTDOOR USE ?
If you’re looking for a PTZ IP camera for outdoor surveillance, you need one with night vision, weatherproof enclosure, miniature architecture for “outsider” visibility reasons, and vandal-proof capability for fortification in high crime areas.
YOUR DESIRED CAMERA FORM FACTOR
Each form factor has its own benefits, and the brand you opt for should cover all your surveillance requirements. Would you prefer a dome-shaped or an inconspicuous mini-dome camera? A wireless option or just an ordinary corded PTZ IP camera? You know your place and specifications best.
When weighing different camera alternatives, you need to be sure of the detail level you want to see in your images. For wide area surveillance, you need a higher resolution, of course, as this will allow you to view even the furthest of images in relatively great detail.
Another factor that affects a camera’s resolution is its field of view (FOV). This is the viewable expanse of a given scene taken by the camera, and is sometimes referred as the angle of coverage or angle of view. A small FOV generally leads to the target object appearing smaller than it would in a fairly larger FOV.
The type of lens featured in the camera will also have an impact on resolution and field of view alike. A lens with low focal length number will bring about a wide field of view but less magnification while a higher focal length number will provide more magnification.
PTZ IP cameras, just like ordinary cameras, come with different resolution capabilities, and if you choose a high-resolution one, you also need to choose a high resolution megapixel lens so that the resolution required to produce a clear and detailed image can be maintained. If you combine a high resolution camera sensor with a less powerful lens, then your images will not be as detailed and crisp as you may desire.
POWER
Each PTZ camera is shipped with its own power supply. Some cameras operate on 12v DC and some on 24v AC. Make sure you note the type of power the camera uses and that the power supply matches the camera.
PTZ cameras have multiple motors built-in which draw a considerable amount of power compared to a regular surveillance camera. Power can be supplied locally at the camera location or a cable can be pulled from a power source to the camera. The size of the wire dictates the maximum distance the cable can extend from the camera to the power source. See the chart below.
· 12 Gauge Wire – Maximum Distance 320 Feet
· 14 Gauge Wire – Maximum Distance 225 Feet
· 16 Gauge Wire – Maximum Distance 150 Feet
· 18 Gauge Wire – Maximum Distance 100 Feet
Each PTZ camera is shipped with its own power supply. Some cameras operate on 12v DC and some on 24v AC. Make sure you note the type of power the camera uses and that the power supply matches the camera.
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