What Are the Best Cameras for Surveillance System

Due to the increasing usage of security tools worldwide, the demand for surveillance cameras is expanding significantly. Therefore, different manufacturing companies manufacture a wide variety of high featured cameras to meet the clients' versatile necessities. So, in this guide today, we will discuss different types of surveillance cameras and their purpose.

IP Camera Connected With Mobile

An installation with mobile vision with IP cameras that send back to you real-time the images recorded on your smartphone or your computer (need for a 3G internet connection). 

Installed With Mobile And Local Vision

An installation with mobile and local vision made to measure for better protection and to meet all requirements.

Although the cameras are independent at the installation, it is necessary to guide its choice better. In addition, of course, some cameras are fixed, and others are motorized.

Smart advice: make a plan of the area to be monitored, estimate the necessary fields by going to the locations of future settlements, judge the usefulness or non-usefulness of motorized cameras, assess the exposure to bad weather, plan the possibilities of connections (if wired network selected) and anticipate possible acts of vandalism (camera protection)

• Viewing Angle: As with the eye, the viewing angle determines the field of what the camera will see (film).
• Lens: Suggests the viewing angle of the camera. The larger it is, the narrower the field of vision, and the further you can see; the smaller it is, the wider the field. They range in size from 2.5mm to 100mm.
• Focal length: roughly speaking, the focal length (expressed in mm) represents the distance between the focal point and the image formation plane. When increasing the focal length, the field of view is reduced (25mm: wide-angle; 50mm: standard).
• Lens: converges or diverges the light, defines the trajectory.
• The aperture: also called the diaphragm, adjusts the light flux transmitted by the lens.
• Image sensor: allows the camera to pick up the light signal. CCD sensors offer a better definition than CMOS.
• Chipset: manages data flows and transforms the light signal into a distinct and precise image.
• Compression: Compresses data to minimize it to generate storage space. These compressions have different formats, and the best known are MJPEG, PEG4, H124, some cameras combine two. MJPEG is more suitable for cameras with motion sensors.
• Encoding: relating to the transformation of video into computer format.
• Scanning: concerns the sharpness of the image.
• Brightness (Lux): Minimum amount of light for the camera to shoot. Brightness is measured in Lux, from 0 to 50,000; 0 corresponding to total darkness and 50,000 to the maximum attainable brightness. The number given in the characteristics of a camera corresponds to "from".
• White balance: a system that corrects the coloring of the image.
• Degree of protection: standard ensuring the water tightness of equipment. If you only need to remember one number, waterproof models are IP66.
• UPnP: allows you to have real-time retransmission to television or multimedia.

Selecting The Right Focal Length

Depending on the location of your camera, the choice of focal length is decisive because it determines the area covered. Note the following characteristics for a focal length of:

• 2.1 mm films a scene 14 meters wide at 6 meters distance;
• 2.8 mm films a 14-meter wide scene from 8 meters away;
• 3.6 mm films a 14-meter wide scene 10 meters away;
• 6mm films a scene 14 meters wide from 18 meters away;
• 12mm films a scene 10 meters wide from 24 meters away.

Note that there are variable focal lengths, even better if you are not sure of the destination of the camera, if you have to change its location or if you want to change its surveillance zone.

Interpretation of figures to know the degree of protection

The IP code followed by two digits is found in all electrical and electronic equipment intended for outdoor use. The numbers behind the two letters represent a degree of protection against the bad weather to which the switchgear is subjected. 

Wired or wireless camera

Some cameras send images over a wired network while others are wireless. The former is the most reliable but may require heavy installation work. The seconds have a maximum range beyond which the signal weakens too much to perform its role. This range is indicated for an obstacle-free space, and it can be greatly reduced by the presence of walls, particularly those in reinforced concrete or the thickest of old constructions.

The Analogue Camera Or IP Camera

The IP cameras (Internet Protocol) filmed in a digital format compressed sent over an Ethernet network (computer cable consists of four twisted pairs of a son) or WiFi to a central monitoring or recording. you can also view these images remotely if you have internet access.

The field of motorized IP cameras (Internet Protocol) filmed in a digital format compressed over an Ethernet network (computer cable consists of four twisted pairs of a son) or WiFi to a central monitoring or recording. you can also view these images remotely if you have internet access.

you can then adjust the field of motorized cameras to your liking, and it is even possible to hear what is happening in your home as long as they have a built-in microphone. There are cameras that directly provide remote consulting. Rest assured, this kind of device is secure not to be spied on on your own! Some cameras have ports for inserting SD cards. Such a camera can thus save images autonomously.

Note that an analog recording unit has a limited number of camera ports. Therefore, you must choose one that allows you to connect at least the number of cameras provided in your analog installation. Think about it!

This limitation is less on an IP recording center since it is possible to connect many IP cameras to the network of the same name. In addition, some cameras directly provide remote consulting. Rest assured, this kind of device is secure not to be spied on on your own! Finally, some cameras have ports for inserting SD cards. Such a camera can thus save images autonomously.

Note that an analog recording unit has a limited number of camera ports. Therefore, you must choose one that allows you to connect at least the number of cameras provided in your analog installation. Think about it!

Conclusion

Wired IP cameras with PoE power provide both a modern and flexible installation. Failing that, WiFi cameras make it possible to benefit from the advantages of IP video surveillance without having to pull cables. Learn about the optics, electronics, and connections of the cameras you will install to ensure the quality of the images and their future use. Depending on your region and the exposure of your CCTV cameras, remember to check their temperature limits.

Comply with the legal provisions relating to video surveillance in order to avoid any disappointment. If you are only interested in the deterrent aspect, you can get dummy cameras cheaply.