How much do you know about starlight and low illumination
From the camera function classification;
How much do you know about starlight and low illumination;
At minimum illumination camera is a camera that can capture clear images in low light;
But due to there are no uniform international standards;
So each large image sensor manufacturer has its own measurement standards;
As we said starlight level camera is a level of low illumination camera;
Low illumination is usually divided into: 0.1Lux-Dark level; 0.01Lux- Moonlight level; 0.001Lux and below-starlight level ;
So to speak, the starlight camera is one that does not have any auxiliary light source in the starlight environment; the camera can still display full color images；it’s a series of cameras launched to solve the image problem in low illumination environment;
Categories of night monitoring cameras
Well, besides the starlight camera, what other common minimum-illumination cameras are there?
What are the different functional advantages of starlight cameras and other minimum-illumination cameras?
HD IR night vision camera
Infrared night vision cameras are mainly used in a dark environment without visible light or low light.
The infrared light is used to actively project infrared light onto the object, and the infrared light is reflected by the object and enters the lens for imaging.
So this method has become the most common application solution with its most mature technology, widest application range, and highest cost performance.
White light night vision camera
However, the infrared night is regarded as a black and white picture, and the image range is limited by the irradiation distance of the infrared lamp.
In some special shooting environments, there will be the disadvantage of unclear details such as faces and license plates.
For example: the license plate in the picture below is completely invisible due to infrared reflection
Considering the above possible problems and the need for license plate shooting, some company launch some starlight full color cameras to solve this problem ,
Warm light minimum illumination cameras or super starlight full color cameras
Starlight full color camera’s feature and advantage:
In actual application scenarios, infrared light cameras are limited by black and white images and shooting distances, and white light cameras need additional light supplementary tools, which cannot really meet the shooting needs of scenes under low illumination. Therefore, many manufacturers follow
Cameras with super-sensing image sensors will be launched.
The so-called image sensor is like the retina of the human eye to the camera.
To give a familiar example, the reason why a cat can perceive the actions of a mouse in the dark is largely because its retina is very sensitive to light, except for its large pupils.
Very weak light is enough for it to see its surroundings clearly. environment of. Compared with the low illuminance of ordinary network cameras, the starlight level camera has better effect and can meet the requirements of starlight level (under the star illuminance environment of 0.001lux and below, without any auxiliary light source, it can still display clear color images. )
At the same time, in line with the current development trend of H.265, the concept of H.265+ starlight is more suitable for the needs of the current starlight market, and its effect is more popular than ordinary starlight.
For example, XZ-A6-MS10 the H.265 starlight product recently launched by Zhongwei Century.
