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Can security cameras see in the dark?

Nov 29,2022 | LongPlus

How do security cameras work in the dark?

In order to understand how security cameras work in the dark, it is important to first understand how regular cameras work. A camera works by capturing light and converting it into an image. The amount of light that is captured by the camera depends on the shutter speed, which is the amount of time that the camera's shutter is open. The longer the shutter is open, the more light that is let in and the brighter the image will be.

Security cameras typically have a faster shutter speed than regular cameras, which allows them to capture more light and produce a clearer image. However, even with a faster shutter speed, there is still not enough light for the camera to produce a clear image in complete darkness. This is why most security cameras come equipped with infrared LEDs, which emit infrared light that is invisible to the human eye but can be picked up by the camera's sensor. This allows the camera to see in complete darkness by using infrared light instead of visible light.

Indoor vs. Outdoor cameras

When it comes to security cameras, there are two main types: indoor and outdoor. Each has its own benefits and drawbacks. Here's a look at the key differences between indoor and outdoor security cameras:

Indoor Cameras:


-Can be placed discreetly out of sight

-Ideal for monitoring activity in a specific room or area

- typically don't require as much weatherproofing as outdoor cameras


-Limited field of view compared to outdoor cameras

-May be more vulnerable to tampering or damage from inside the home


Outdoor Cameras: 


-Wider field of view than indoor cameras

-Easier to monitor activity around the entire perimeter of a home or business

-Better protection against weather and vandalism than indoor cameras


Security Cameras during the Night

While most security cameras come equipped with infrared (IR) light that allows them to see in the dark, there are some limitations. IR light is invisible to the human eye, but it can be picked up by camera sensors. However, IR light can only illuminate a certain distance, so if you're trying to capture footage of something far away at night, it may be too dark for the camera to pick up.

There are also different types of IR light. Some security cameras use visible IR light, which is detectable by the human eye. This can be useful if you want to be able to see what the camera is seeing, but it can also be a privacy concern since anyone who sees the IR light will know they're being recorded.