What different types of cameras do you supply?

What features do we offer in our CCTV systems?


As a cctv supplier in essex, these are the following features that we can offer with our systems: (subject to specific cameras). All the below features can be linked to an alarm output, email/app alert, and/or could trigger a recording on a specific camera, as well as a pre-configured preset on a PTZ camera to pan around to a specified place.

  • Motion Detection - As simple as it sounds - this detects motion on a camera.

  • Video Tampering - This will recognize the following incidents: Intentional Blocking/Covering of a camera, Camera Redirection, Camera Defocus.

  • Video Loss Detection - To Detect the loss of video on a camera.

  • Scene Change Detection - This detects the change of the surveillance environment

  • Face Detection - This can detect human faces to be able to take snapshots and display a log of faces detected.

  • Intrusion Detection - This detects people, vehicle or other objects which enter and loiter in a pre-defined virtual region

  • Line Crossing - This detects people, vehicles, or other objects which cross a pre-defined virtual line.

  • Unattended Baggage Detection - If an object(s) is left in a pre-defined region, such as baggage, the camera will automatically detect the event.

  • Object Removal Detection - If an object(s) is removed from a scene (e.g., baggage, purse, dangerous materials, vehicles, etc.), the camera will automatically detect the event.

  • Automatic Number Plate Recognition - This can capture images of fast-moving vehicles number plate(s) and turn the images into computer-readable text as well as recording video footage and a screenshot in a conventional manner. Some models also include brand/make and colour detection.

  • Heat Mapping -

  • Density Control/People Counting - This is set up at the exit/entrance of a building to count and display the number of people in the specified building. This can be linked to a display to show how many people can enter the building and also display when it is full inside. It can also link to a traffic light system showing shoppers/visitors when they can enter.

  • Facial Recognition - This will detect a human face and cross-reference it to a database of configured images to recognize a person which can then allow them access through a door or log them on a system for time and attendance.

  • Smart Tracking - This is subject to PTZ cameras. Smart tracking can be used to detect moving objects and follow their movements until they’re out of view.

Usual CCTV terminology explained

  • WDR - In conditions with very bright and dark areas, such as at an entrance door in an office building or an entranceway to an indoor parking garage or tunnel, a camera may capture over-exposed images in bright areas and under-exposed images in dark areas, which greatly affects image quality. A camera with WDR (Wide Dynamic Range) can help solve this issue. By combining images with short exposure (for bright areas) and long exposure (for dark areas) into one image, WDR technology captures both bright areas and dark areas clearly.

  • BLC - Backlight compensation. This is a clever feature that helps even out an image. Imagine you were standing in front of a window and someone took a photo of you. The camera would either choose you as the subject and the outside of the window would appear pale and washed out, or it would choose the outside as the subject and you would be too dark. Backlight compensation helps avoid this and evens the picture out.

  • FOV ( Field Of View) - in other terms this can be called the viewing angle. In simple terms FOV is the area that a camera is able to 'see' this all depends on the focal length of the camera (see below)

  • Focal Length - The distance from the center of the lens to the focal point (sensor). this is measured in mm. in simple terms it is how far the camera can see. The bigger the focal length the farther away it can focus. The smaller the focal length, the wider the FOV

Which camera lens best suits me?

This will all depend on what you would like to monitor. To help you choose it is a good idea to understand the kind of views that a lens will give you.

A 2.8mm lens will give you a 90° FOV - These are great for indoor environments as only one camera mounted in the corner of a room will give you the ability to see the whole room. They are also very effective for outdoor areas that you would need to capture a wide-angle for.

A 4mm lens will give you a 60° FOV - This will show a similar scene to the 2.8mm lens however due to the reduced angle of view it gives off the illusion that objects are closer to the camera. These are useful for detection and identification which makes them perfect for most outdoor areas where detail is an important factor and also when you require a narrower view to avoid monitoring unnecessary areas.

A 6mm lens will give you a 45° Telephoto FOV - this gives a narrow but detailed view. These are great for monitoring a specific area such as an entrance

What is Hikvision ColorVu Technology?

Many cameras default to monochrome operations as the ambient illumination decreases, and when additional lighting such as infrared lamps are used, images lose all colour detail. While the images might be crisp and clean, the advantage of using colour information is lost.

ColorVu Technology enables the camera to capture video containing colour information in a range of conditions, including in extremely dim lit environments. This not only gives the operator or security teams more information about a suspect, but it also makes it simpler to identify targets in dark scenes. When using conventional cameras with infrared lighting for night time monitoring, people, vehicles, and other critical objects can blend into the dark background, making it difficult for operators to quickly assess a situation, or make positive identifications.

Hikvision ColorVu technology has the ability to capture colour details in low lighting. This is due to the advances in lens technology and the use of high-performance sensors. The cameras also include a supplemental light for extremely dark situations.

The cameras make use of an F1.0 aperture, which captures 4 times the light of typical cameras. This enhances colour replication in poor lighting, without the need for excessive exposure times which can result in blur and smear. The advanced image sensor uses self-adaptive 3D digital noise reduction to eliminate noise and ensure full-motion video.