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4K UHD Image Resolution

4K UHD surveillance network cameras 8MP and 12MP

Undoubtedly, new wave of 4K UHD technology changes home electronics industry, since Sony,Samsung, Skyworth, TCL, Konka etc manufacturers launched 4K UHD Television, 4K UHD offers superior image quality, attract a large number of home appliances consumers. In global video surveillance industry, not only many reputable manufacturers launched 4K related products, 4K also gradually forms a complete product chain, has a great possibility to replace 720p and 1080p products. With the rapid development of digital video surveillance technology, the cost of hardware and software gradually decreased, 4K will become popolar within 2 years.

According to Moore's Law, processor speeds, or overall processing power for computers will double every two years. This also fits security field, video surveillance goes through analog, digital, standard definition, high definition four phrases, will inevitably move to higher definition, ultra high definition development, like the recently emerged 4K, even the future 8K, video surveillance industry develops to ultra HD is an inevitable trend.

4K UHD Resolution = 4x 1080p

4K UHD resolution is 3840*2160, 16:9 video aspect ratio, under this standard CMOS progressive scan can reach 2160P. 4K UHD network cameras utilize higher performance hardware platform, incorporated with 12 megapixel ultra HD CMOS image sensor, resolution can reach 3840x2160 pixels, which is 4 times higher than 1080P, and 9 times higher than 720p, meanwhile with true color reproduction, highly detailed image quality etc features.

Full HD vs 4K UHD
Full HD vs 4K UHD

4K UHD video requires min. 10Mbps bandwidth

Obviously, compared with 720p, 1080p, 4K has advantages on resolution, can have a large area covered, additionally capture details in monitored scene. However, higher resolution requires larger network bandwidth to transmit, one frame 4K UHD image equals 4 frames 1080p or 8 frame 720p images. Typically, one set 1080p network camera requires minimum 2M-4M network bandwidth, while a 4K network image transmission needs above 10M network bandwidth, to wide view angle traffic monitoring application, image contains many moving objects, sometimes the required bandwidth may exceed 20M, greatly increased transmission burden.

Poor light sensitivity +  low dynamic range

On one hand, the current 4K UHD network camera merely can capture ultra high definition video, the capabilities of transmission, decoding, storing still lag behind. Until today, despite 4K UHD has significant benefits, it still can't widely and smoothly used in video surveillance application like the 1080p and 720p. On the other hand, current 4K UHD network cameras have poor performance on the aspect of low light and dynamic range. Therefore, 4K UHD network cameras can deliver excellent images at day, but low illumination performance is poor at night, currently still can not completely adapt 24 hours monitoring. Besides, The equipped lens for the 4K UHD network camera must support 8 megapixel, which can effectively achieve 4K performance, there are not many 8MP lenses available in the market.

Previously, we wrote some product test reports of 4K UHD network cameras: 


Sony 4K UHD Dome Network Camera

  • 20 megapixels (5,472 x 3,648) image sensor,captures 4K (3,840 x 2,160) video with exceptional detail
  • Excellent low-light sensitivity
  • 2.9x optical zoom lens for detailed close-ups
  • Intelligent Scene Capture automatically selects optimum picture settings
  • Efficient use of network bandwidth with Intelligent Coding
  • Efficient use of network bandwidth with Intelligent Cropping
  • HDMI interface support
  • Optimum performance under varying network conditions
  • Adaptive IR assures high-quality B/W night-time images without overexposure
  • PoE system, AC 24 V or DC 12 V power for easier, more flexible installation
  • ONVIF (Open Network Video Interface Forum) compliance
  • Vandal-resistant design meets IK10 standards


Dahua 4K UHD Panoramic Network Camera

  • 360°/180°panoramic view angle
  • 1/2.3” 12M progressive scan CMOS
  • H.264 &MJPEG dual-stream encoding
  • Max 15fps@12M(4000x3000), 25/30fps@3M(2048x1536)
  • Multiple Correct Mode:Original ,Panoramic, Double Panoramic,1+3,Eptz,4 pictures
  • DWDR, Day/Night(ICR), 3DNR,ROI, AWB, AGC, BLC
  • Multiple network monitoring: Web viewer, CMS(DSS/PSS) & DMSS
  • Optimum performance under varying network conditions
  • Max.IR LEDs Length 10m
  • 2-way talk with 1/1 Audio in/out(Built in Mic)
  • ONVIF (Open Network Video Interface Forum) compliance
  • microSDHC/TF card slot,IP67,IK10,PoE


Dahua 4K UHD Panoramic Network Camera
Panasonic 4K IP dome camera WV-SFV781LH

Panasonic 4K IP Dome Camera

  • 4K UHD images up to 30fps, 12MP up to 15fps
  • Panasonic VIQS technology for smart video streaming
  • Dual H.264 and JPEG streams technology
  • Intelligent Scene Capture automatically selects optimum picture settings
  • Vandal resistant mechanism for high reliability (IK10)
  • Rain wash coating for visibility in rainy conditions
  • Smart IR LED, IR range 10 meters
  • High light compensation
  • Fog compensation function equipped as standard
  • IP66 rated water and dust resistant


4K UHD Network Camera KEDACOM

  • 8 megapixel CMOS image sensor
  • H.264 video compression, 3840×2160@25fps
  • Built-in ICR, true day/night surveillance
  • WDR, suitable for challenging environment
  • Auto-Iris lens for better high quality
  • 2-Way talk, Alarm I/O
  • 3D noise reduction, high clarity image
  • BLC, HLC, Automatic electric shutter
  • Max.IR LEDs Length 10m
  • 2-way talk with 1/1 Audio in/out(Built in Mic)
  • Built-in microSDHC/TF card up to 128G
  • RS485 control, Defog


4K UHD Network Camera KEDACOM

Manufacturers talk about 4K UHD

4K UHD network camera is suitable for large area surveillance, a 4K UHD network camera can have train station plaza covered, meanwhile the captured image can basically recognize face. Secondly, if having the same field of view, 4K UHD provides much better details such as face, car plate license number etc, these details are very important in real video surveillance application.

— Mr.Chou, Marketing manager, KEDACOM

4K UHD will become the future standard in video surveillance. However, 4K UHD doesn't merely mean the improvement of resolution, it also greatly expanded the security cameras potential applications, thus promoting the overall transformation of the security and surveillance applications, the Sony 4K UHD network cameras can cover larger monitoring area, raise awareness, to ensure that no detail missed in the monitoring scene. Many Chinese users expressed interest to our SNC-VM772R network camera, this product will let users enjoy true value of 4K UHD imaging brings, become a milestone change the market rules of the game.

— Qi Xiaobo, Product Manager, Sony Asia Professional


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