Surveillance CCTV Cameras And Their Types

Surveillance CCTV Cameras

When you immediately think about video surveillance cameras, the question immediately arises, which cameras to choose? Why do you need cylindrical chambers with a mounting base, where is it better to mount a dome chamber or is it enough to have one simple controlled chamber? 


At present there are two types of CCTV cameras: analog and digital (IP). Below is a brief overview of these camera types.

Analog security cameras

Recently, analogue video surveillance systems are losing their relevance in the market, but are still characterized by a particularly low cost of equipment. However, this type of camera requires more work to install the equipment, as the system requires 2-3 cables for operation: power supply, signal transmission and, if desired, a microphone. The functionality of individual analog cameras is very limited, and without a recording device, only a live image on the monitor screen can be monitored with them.

Digital IP Surveillance Cameras

Digital security cameras offer much more functionality than analog ones. Most modern IP cameras have a built-in microphone, motion detection feature, the ability to record a recording in the cloud or send photo messages via e-mail when motion is captured in the field of view. Digital cameras offer not only greater functionality, but also much simpler installation. For IP cameras, it is now enough to run only one UTP cable, which provides power and video signal to the camera with the help of PoE technology.

Both camera types have different surveillance camera models for different situations. Thus, the type of security camera is always selected according to the customer’s requirements, taking into account the object, distances and budget.


For small rooms, small offices, cafes, one camera is usually enough to monitor the whole room. There are some hints to help you choose a camera:

  • Choose a camera with a 2.8-3.6mm lens. Such cameras have a wide viewing angle, which will allow you to see everything that is happening in a small room with the help of one camera. Surveillance cameras with a lens larger than 4mm see at a much smaller angle, so one such camera to monitor, even in a small room is definitely not enough.
  • For small room surveillance and with a good WIFI connection, you can choose a security camera with WIFI. This eliminates the need to route long cables to the camera. It is enough to connect the camera to the mains and it will work.
  • In small rooms, it is convenient to choose a camera with a microphone.
  • If you only need one camera, choose one that has a memory card connector. This will save you money and not overload the room with additional equipment (recording devices).
  • Choose a surveillance camera with 10-20m night vision function. This will allow you to see well what is going on in the monitored room even at night Also, most digital cameras already support the H.265 and H265 + video compression formats. This setting is important when you want to save as much memory as possible on the recording device or memory card. Compared to H264 compression, H.265 saves up to 50% of disk space. Such a solution is most suitable for monitoring large objects with a large number of security cameras.


Dome cameras are perfect in places where you need to see a lot and in all directions. They do not stand out and fit perfectly into the interior. They are easy to install and use. The camera lens is easily adjusted after mounting the camera

Depending on the object being monitored, there are two options to choose from: a simple or anti-vandal dome surveillance camera. For example, outdoors, in rooms with negative temperatures, anti-vandal cameras should be installed near elevators. This will extend the life of the camera.


There are higher requirements for outdoor cameras. Cylindrical chambers are best suited for the building environment, households, and other similar objects. The cameras have a special foot and an adjustable body for easy mounting, which can be tilted to the desired angle. Most cylindrical cameras have a sliding roof at the top to help protect the lens from other light sources.

Cameras with a narrow viewing angle with a 4-12 mm lens are most suitable for observing the perimeter of a building. Such cameras are usually mounted together with the mounting base. Its deck has hidden surveillance camera wires and a power supply. The purpose of the camera itself is most suitable for monitoring entrances through doors, gates or windows.

When installing cameras outdoors, it is advisable to choose cameras with at least an IP65 security standard. This standard specifies how airtight the camera is. The first number indicates the protection of the camera from dust and the second the protection against moisture. For outdoor cameras, the IP65 standard is sufficient, as 6 means complete protection against dust entering the camera and 5 means protection against water jets on all sides.

It is also very important to choose adequate IR illumination. It is used to have the camera capture an image even in complete darkness. Current cameras usually already have a built-in 20-30m night vision, but when looking at larger perimeters, you should look for a camera with a more powerful IR.


Controlled PTZ cameras are optimal for supermarkets and large sites. They are distinguished by the fact that they can be rotated in all directions by telephone, computer or directly via a recording device. These cameras also feature a very powerful zoom (ZOOM) that can reach up to 36 times and more. When choosing such a surveillance camera, it is important to take into account its rotational speed, as it is sometimes necessary to track fast-moving objects over a very large area.

For those cases where it is not possible to mount more than one camera and you need to see the whole area, you can choose a Fish-eye surveillance camera that monitors all 360 degrees at once. The enclosures of these closets are very similar to the domes, but are much lower and wider, making them perfect for ceiling mounting.

Please note that be sure to consult a professional before installing CCTV cameras. They will help you choose the right video surveillance system for home or business security.

What are the important specs of CCTV?

  • Infra-Red Lighting. 
  • Dual Audio. 
  • Automatic Number Plate Recognition. 
  • Facial Recognition.
  • Video Analytics Features.
  • Real-Time Alerts.
  • Cloud Storage.
  • Wireless Connectivity.

Can my Neighbour point CCTV at my house?

It is legal for a resident to employ CCTV (even with capturing and replay capabilities) and, in the normal course of events, this will be performed to protect one’s own assets against the alarm of intruders and trespassers.


The demand of CCTV cameras around the world is increasing rapidly. This guide will assist you in many ways to find the best CCTV and surveillance camera for your needs and demands.

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