Learn the essential differences between CCTV camera types, resolutions, lenses and intelligent surveillance technologies. These frequently asked questions explain IP cameras, ColorVu, DarkFighter, AcuSense, Smart Hybrid Light, panoramic cameras and other features to help you select the right security camera for your home or business.
An IP camera is a digital security camera that sends video, audio and event information through a computer network. It can connect to a Network Video Recorder, commonly called an NVR, using an Ethernet cable or, on selected models, Wi-Fi.
Many professional IP cameras support Power over Ethernet, known as PoE. This allows one network cable to carry both power and data, simplifying installation and reducing the number of cables required.
Compared with older analogue cameras, IP cameras generally provide higher resolutions, more advanced image processing and intelligent features such as human and vehicle detection, line crossing detection, intrusion detection and remote viewing.
Recorded footage can be stored on an NVR, a microSD card where supported, or another compatible storage platform. Users can normally view live video and recordings through a mobile app or computer software.
Professional IP camera systems are commonly used in homes, offices, shops, warehouses, schools and industrial properties.
A CCTV camera is a security camera used to monitor and record activity within a specific area. CCTV means closed-circuit television because the video is transmitted to authorised monitors, recorders or users rather than being publicly broadcast.
Modern CCTV systems may use IP network cameras or traditional analogue cameras. IP cameras connect to an NVR through a network, while analogue cameras generally connect to a DVR using coaxial cable.
CCTV cameras are available in several designs, including turret, dome, bullet, PTZ, panoramic, fisheye, cube and thermal cameras. Different models may include infrared night vision, full-colour imaging, microphones, speakers, flashing warning lights and artificial intelligence.
A complete CCTV system normally includes cameras, a recorder, surveillance-grade hard drives, cabling, a display and mobile remote-viewing access.
CCTV systems can help deter unwanted activity, provide evidence, monitor properties remotely and improve safety around homes and businesses.
Hikvision ColorVu is a low-light imaging technology designed to produce detailed colour footage during the day and at night.
ColorVu cameras typically use a highly sensitive image sensor, a large-aperture lens and advanced image processing to capture more available light than a standard infrared camera. Many models also include built-in white-light illumination for environments where natural or surrounding light is insufficient.
Colour video can provide valuable identification details, including clothing colours, vehicle colours and the appearance of objects. This can make recorded footage easier to understand during an investigation.
ColorVu cameras are commonly used around driveways, entrances, retail stores, car parks, offices and building perimeters.
The camera still requires some light to create a colour image. This light may come from streetlights, outdoor lighting or the camera’s own supplemental light. Models with Smart Hybrid Light may use infrared lighting normally and activate white light when a relevant event is detected.
Hikvision DarkFighter is a low-light surveillance technology designed to produce clearer and more detailed video in dark environments.
DarkFighter cameras use sensitive image sensors, advanced lenses and specialised image processing to retain usable detail when conventional cameras may produce dark, noisy or unclear footage. Depending on the model and available lighting, the camera may remain in colour for longer before changing to infrared black-and-white night vision.
DarkFighter cameras are well suited to locations with very limited ambient lighting, including warehouses, industrial sites, rural properties, long driveways, large car parks and building perimeters.
The main purpose of DarkFighter is to improve image clarity in difficult lighting conditions. It does not necessarily provide continuous full-colour video in complete darkness.
Choose DarkFighter when low-light clarity and infrared performance are more important than permanent full-colour night footage. Choose ColorVu when identifying colour at night is the main priority.
Smart Hybrid Light is a Hikvision illumination technology that combines infrared light and visible white light within the same security camera.
The camera can normally operate in one of three modes:
Smart mode can reduce unnecessary visible lighting while still providing colour footage during important security events.
For example, a camera may monitor a driveway using infrared lighting. When a person enters the detection area, the camera activates its white light and records the event in colour. The light may also discourage unwanted activity.
Smart Hybrid Light cameras are suitable for homes, shops, car parks, warehouses and commercial properties where users want flexible night surveillance.
Available modes, detection functions and illumination distances vary between camera models and should be confirmed before purchase.
Hikvision AcuSense is an artificial intelligence technology that helps security cameras and recorders distinguish people and vehicles from other movement.
Traditional motion detection may react to trees, rain, shadows, insects, animals or changes in lighting. AcuSense analyses the shape and movement of an object and can classify relevant events as human or vehicle activity.
This can reduce false alarms and make recorded footage easier to search. Instead of reviewing every motion event, users can focus on events involving people or vehicles.
Depending on the compatible camera and recorder, AcuSense may support:
AcuSense does not guarantee that every event will be classified perfectly. Performance depends on camera positioning, installation height, lighting, detection settings and the size of the target within the image.
Professional setup is recommended for the best detection accuracy.
Hikvision DeepinView is a professional camera range that uses deep-learning technology for more advanced video analytics.
While standard intelligent cameras may mainly classify people and vehicles, selected DeepinView cameras can support specialised functions such as facial capture, people counting, queue management, heat mapping, perimeter protection, hard-hat detection and other business or security analytics.
Available features depend on the exact DeepinView model. One camera may be designed for facial capture, while another may focus on people counting or perimeter monitoring.
DeepinView cameras are commonly used in:
DeepinView functionality may require compatible Hikvision recorders, software and careful camera positioning. Advanced analytics must also be configured correctly to suit the installation environment.
These cameras are generally intended for professional projects requiring more than basic motion detection.
DarkFighter 2.0 is an enhanced generation of Hikvision low-light imaging technology developed to improve image clarity, colour accuracy and detail in challenging lighting conditions.
It combines advanced image sensors, lenses, artificial intelligence and image signal processing to manage noise, movement and contrast more effectively than conventional low-light cameras.
Depending on the specific model, DarkFighter 2.0 may improve:
DarkFighter 2.0 is useful for commercial sites, industrial facilities, car parks, warehouses and large outdoor areas where lighting may be uneven or extremely limited.
The technology does not mean every camera will remain in colour in complete darkness. Some models may still use infrared illumination and change to black-and-white video when available light falls below the required level.
Always compare the specifications of the individual camera rather than relying only on the technology name.
The difference between 4MP, 6MP and 8MP CCTV cameras is the amount of image detail they can record.
A 4MP camera provides clear surveillance footage suitable for many homes, offices and general monitoring applications.
A 6MP camera captures more detail and can provide a useful balance between image quality, bandwidth and storage requirements.
An 8MP camera records 4K-resolution footage and is normally selected when greater detail is required for faces, vehicles, entrances, retail areas or larger scenes.
Higher resolution does not automatically guarantee better performance. Image quality also depends on the camera sensor, lens, lighting, compression settings, installation position and viewing distance.
Higher-resolution cameras require:
For many general applications, 6MP provides an excellent balance. Choose 8MP when maximum detail is important, and 4MP when lower storage use and cost are priorities.
A fixed-lens camera has one viewing angle that cannot be optically adjusted after installation. Common fixed-lens options include 2.8mm, 4mm and 6mm.
A 2.8mm lens normally provides a wider view and is suitable for entrances, rooms, driveways and general area coverage. A 4mm or 6mm lens provides a narrower view with more detail at a greater distance.
A varifocal camera allows the installer to adjust the viewing angle. Motorised varifocal models can normally be zoomed and focused remotely through the camera or recorder interface.
Choose a fixed-lens camera when:
Choose a varifocal camera when:
A varifocal lens provides installation flexibility but does not usually operate like a continuously moving PTZ camera.
A bullet camera has a long cylindrical housing and is designed for longer viewing distances. It is highly visible, making it an excellent visual deterrent for businesses, warehouses and perimeter security.
A turret camera features a ball-and-socket design that allows installers to easily adjust the viewing angle without opening the housing. Turret cameras are popular because they are easy to install, have fewer infrared reflection issues and suit most residential and commercial applications.
A dome camera encloses the camera inside a protective dome. Many dome cameras are vandal-resistant (IK10 rated), making them ideal for schools, shopping centres, offices and public areas where tampering may be a concern.
All three camera types are available with advanced technologies such as ColorVu, DarkFighter, Smart Hybrid Light, AcuSense and built-in microphones.
Choose the camera style based on the installation location rather than appearance. Turret cameras are generally the most versatile option for most installations.
Unlike fixed cameras, PTZ cameras allow security operators to control the camera remotely or automatically move between preset positions.
Many Hikvision PTZ cameras support:
PTZ cameras are commonly installed in large outdoor environments where a single fixed camera cannot provide sufficient coverage.
PTZ cameras monitor one viewing direction at a time. For continuous coverage of critical areas, combine PTZ cameras with fixed cameras.
Cube cameras are ideal where discreet indoor monitoring is required.
Depending on the model, features may include:
Cube cameras are frequently used for monitoring reception areas, offices, living rooms and small retail spaces.
Cube cameras are generally intended for indoor use unless specifically designed for outdoor environments.
Instead of installing multiple fixed cameras, a fisheye camera can monitor an entire room or open space.
Advanced Hikvision fisheye cameras support:
Fisheye cameras provide very wide coverage but less detail at long distances.
Thermal cameras use infrared heat signatures instead of visible light.
They are commonly used for:
Unlike conventional CCTV cameras, thermal cameras do not rely on ambient lighting.
Thermal cameras detect heat, not facial detail. They are often used alongside standard CCTV cameras.
