Low-light and starlight cameras: how 0.001Lux is achieved

How to read the minimum illumination indicator

Values such as "0.001Lux" in camera parameters refer to the lowest ambient illumination that can still produce images under specific conditions. But this value must be combined with Check the test conditions together, otherwise it has no reference value. The complete statement should include:

• Aperture value (F): F1.0 lets in one stop more light than F2.0.
• Shutter: The factory standard is 1/3s or 1/30s. The value will be more beautiful at a slower shutter speed.
• Whether infrared is turned on: When infrared fill light is turned on, the Lux value is usually recorded as 0.
• AGC Gain: The higher the gain, the brighter it will be, but the more noise it will have.

Therefore, when comparing different brands, be sure to compare under the same conditions. It is best to use actual nighttime samples as the standard.

The implementation path of starlight level

1. Large target area sensor: 1/1.8″ and 1/1.2″ have a larger light entrance area and better signal-to-noise ratio than 1/2.8″ single pixel.
2. Large aperture lens: F1.0 / F1.2 constant aperture, significantly increasing the amount of light entering.
3. Back-illuminated (BSI) process: Reduces light blocking by the circuit layer and improves quantum efficiency.
4. Multi-dimensional noise reduction algorithm: 3D noise reduction + temporal filtering, suppressing noise while retaining details.
5. Intelligent fill light: White light/warm light fill light automatically turns on under extremely low illumination, taking into account color imaging.

Suggestions for selection and debugging

• Need nighttime color images (such as identifying vehicle colors and clothing): choose starlight level + warm light fill light instead of infrared.
• Just need black and white night vision: ordinary low illumination + infrared, lower cost.
• Avoid facing strong light sources, which will cause the overall picture to be darkened.
• Infrared and starlight can complement each other: infrared ensures usability in extremely dark environments, and starlight ensures color when there is low light.
• The noise reduction intensity should not be turned to the highest level, otherwise there will be obvious smearing in the motion picture.