If the night vision on your security cameras is dark and grainy, the most likely problem is that the camera's night vision capability is not sufficient for the area being viewed.
The insufficient power supply is, very often, the culprit of the video loss on one or all security cameras, CCTV video loss at night, video signal loss on screen, camera going black at night, or camera video flickering on and off.
1) Adjust the brightness and contract settings of the security camera. 2) Adjust the security camera to a different position or a different location. 3) Inadequate power may cause the camera picture is too dark or not clear, please connect the camera to another working power supply to check.
No image at night
Make sure the camera has power, ensure all the connections are secure and that the infrared is illuminating (this will mean power is getting through to the camera). If that is all in order then stand in front of the camera quite close to it. Infrared needs to bounce off a surface back into the camera.
Check the status of the LEDs in the IP security cameras
If it's an infrared IP security camera, you are able to see small red lights around the lens of the security camera in the dark, when this security camera is on. It's also a quick way to tell if a security camera has night vision.
Night Vision
When a camera tries to see in the dark, it needs a light source to illuminate the area below it. Unfortunately, the night vision illuminators that come with consumer cameras are designed for short range only and are of a fixed brightness.
To turn Night Mode off for an individual photo, you just need to tap on the Night Mode icon at the top of your screen when in the Camera app and move the Night Mode slider under the viewfinder all the way to the left. It will then be disabled for that picture.
Exploring Infrared Technology in CCTV Systems
IR light is invisible to the human eye but can be detected by CCTV cameras equipped with IR sensors. These sensors capture the infrared light emitted by objects and convert it into visible images, enabling surveillance in complete darkness.
Most IR cameras have a series of IR LEDs (often situated around the lens) that transmit infrared light at night, or whenever the camera switches to night mode.
The farthest a night vision camera can observe is about 150 meters (492 feet).
Block Off Security Cameras with Grown Trees, Fences or Curtain. Another good way to blind your neighbor's security cameras is to plant a grouping of shrubs or grown trees that are tall enough to block off where the camera is aimed. Also, you can close the curtain or shade on the window to block security cameras.
Traditional CCTV cameras and professional-grade security systems have always supported 24/7 constant recording as a standard feature.
How is night blindness treated? Treatment for your night blindness depends on the cause. Treatment may be as simple as getting yourself a new eyeglass prescription or switching glaucoma medications, or it may require surgery if the night blindness is caused by cataracts.
A bendable sheet of silicon can hide 95 percent of infrared light, rendering objects essentially invisible to heat-sensing night vision goggles or infrared cameras. Black silicon is made by growing silicon crystals at various heights on a silicon wafer, creating what looks like a dense forest of needles.
Let's talk about lux
Basically, the less light, the lower the lux number. At present, the average lowest illumination a traditional security camera can handle is 0.01 lux, opposed to 0.001 lux for the average night vision security cameras, explained Max Fang, Director of IP Products at Hikvision Digital Technology.
Day and night CCTV cameras have a highly sensitive image sensor and advanced processing power that allows them to see in low-light conditions without the need for IR light.
The absence of a red light on a CCTV camera does not necessarily indicate that the camera is not working. Some CCTV cameras do not have a red light to indicate that they are recording, while others may have a red light that is not lit when the camera is not in use.
Clear Night Vision
With 6-layer polarized glass lens, high-resolution 1080P images and infrared camera, this security camera can clearly capture every motion even in pitch-dark.
So yes, as long as a camera comes equipped with infrared lights, then it will work in the dark and provide fairly good visibility and images. Make sure when you choose your video surveillance equipment that you go with cameras that have IR lights.