Hikvision DS-2CD2T47G3-LIY | 4MP Smart Hybrid Light ColorVu Bullet | 2.8mm Lens, 60m Range & Anti-Corrosion

FAQs

What is ColorVu 3.0 technology and how does it differ from standard night vision?

ColorVu 3.0 is Hikvision’s advanced imaging technology that captures full-colour video 24 hours a day, even in near-darkness. Unlike traditional cameras that switch to black-and-white infrared mode at night, ColorVu 3.0 uses an exceptionally large F1.0 aperture lens combined with a highly sensitive 1/1.8″ sensor to gather maximum available light, enabling colour imaging at just 0.0001 lux illumination. The technology incorporates HikAI-ISP (Artificial Intelligence – Image Signal Processor) which uses deep learning to process images with superior noise reduction and dynamic motion trail minimisation. This results in vivid, detailed colour footage throughout day and night, making it significantly easier to identify individuals, vehicles, clothing colours and other critical details that would be impossible to discern in monochrome infrared footage.

How does Smart Hybrid Light work and when should I use each mode?

Smart Hybrid Light is an innovative illumination system that integrates both infrared and white light LEDs within the same camera, offering three distinct operating modes for maximum flexibility. IR mode operates like traditional infrared cameras, providing covert black-and-white surveillance without visible light that might alert subjects. White light mode activates visible LED illumination to capture full-colour images at night, ideal for areas where colour identification is critical and visible deterrence is acceptable. Intelligent mode automatically switches between IR and white light based on scene requirements – typically using IR for ambient monitoring and switching to white light when motion is detected, combining covert operation with colour capture when needed. This flexibility enables installers to optimise lighting strategy for each specific location, balancing operational requirements, power consumption and deterrent effect.

What is NEMA 4X anti-corrosion protection and where should this camera be installed?

NEMA 4X is a stringent American standard (NEMA 250-2018) for electrical enclosures that specifies protection against corrosion, water ingress, dust, ice formation and external condensation. Hikvision classifies this camera as having “moderate protection” suitable for environments with moderate anti-corrosion demands. Typical application scenarios include coastal areas approximately 2 kilometres (1.24 miles) from coastlines where salt-laden air is present, regions affected by acid rain, and industrial sites with corrosive atmospheric conditions. The all-metal construction uses specialised materials and coatings to resist degradation over time, providing significantly enhanced reliability and longevity compared to standard cameras. This makes the DS-2CD2T47G3-LIY ideal for seafront installations, ports, chemical facilities, heavy industrial sites and any location where environmental conditions would rapidly degrade conventional equipment.

What field of view does the 2.8mm lens provide?

The 2.8mm fixed focal lens delivers an expansive wide-angle view with 111.1° horizontal, 57.6° vertical and 138.5° diagonal field of view. This makes it particularly well-suited for monitoring large open areas such as car parks, building entrances, retail forecourts, warehouses and perimeters where comprehensive coverage is required. The wide angle provides excellent situational awareness and reduces the number of cameras needed to cover a given area. For DORI (Detection, Observation, Recognition, Identification) performance, the 2.8mm lens provides detection at 61 metres, observation at 24 metres, recognition at 12 metres and identification at 6 metres, enabling effective deployment planning based on specific surveillance objectives.

Can this camera maintain colour images without any ambient light?

Yes, when the Smart Hybrid Light is set to white light or intelligent mode, the camera can maintain full-colour images in complete darkness by activating its built-in white LED illumination. The white light LEDs provide supplemental lighting up to 60 metres, enabling colour imaging even when ambient light is zero. The camera’s exceptional 0.0001 lux sensitivity means it can capture colour images in extremely low ambient light without requiring supplemental illumination, but when ambient light falls below this threshold, the white light mode ensures continuous colour capture. This capability is particularly valuable for sites requiring colour identification at night for forensic purposes, such as identifying clothing colours, vehicle colours, or other details that would be lost in monochrome infrared footage.

What is HikAI-ISP and how does it improve image quality?

HikAI-ISP (Hikvision Artificial Intelligence – Image Signal Processor) is Hikvision’s cutting-edge AI-powered image processing technology exclusive to ColorVu 3.0 cameras. Unlike traditional ISP systems that use fixed parameters, HikAI-ISP leverages deep learning algorithms to process vast amounts of imaging data, automatically acquiring and optimising far more parameters than conventional processors. This enables highly precise image restoration with exceptional noise reduction, enhanced dynamic clarity and minimised dynamic motion trails. The AI algorithms analyse each frame intelligently, distinguishing between genuine image detail and noise, preserving fine details whilst aggressively reducing unwanted artifacts. Combined with 3D LUT (Look-Up Table) technology for accurate colour correction, HikAI-ISP delivers superior image quality particularly in low-light conditions, ensuring the 24/7 colour imaging lives up to its full potential even in challenging environmental conditions.

Is this camera compatible with third-party VMS and recording systems?

Yes, the DS-2CD2T47G3-LIY is fully ONVIF conformant supporting Profile S (streaming), Profile T (H.265 video and advanced streaming) and Profile G (recording and storage), ensuring broad compatibility with third-party Video Management Systems and Network Video Recorders. The camera also supports Hikvision’s ISAPI (Internet Server Application Programming Interface) and SDK (Software Development Kit) for deeper integration capabilities. Standard protocols including RTSP (Real Time Streaming Protocol), RTP (Real-time Transport Protocol) and RTCP (RTP Control Protocol) enable universal streaming compatibility. This comprehensive standards support ensures the camera integrates seamlessly into existing surveillance infrastructures regardless of manufacturer, whilst providing access to advanced ColorVu 3.0 features and Smart Hybrid Light control through compat