When selecting surveillance cameras, one of the most important factors that businesses have to consider is the lighting condition. Most CCTV cameras are designed to operate in normal lighting conditions, but there are cameras that are capable of seeing at night. Businesses that wish to capture surveillance video either, at night or in low lighting environments, have to ensure that they select the right security cameras.

How to Select the Best Nighttime Surveillance Cameras

There are two important factors that you have to consider when choosing CCTV cameras with night vision capabilities, namely, lighting, and the Lux number.


Security cameras need some form of lighting in order to capture images. During the day,surveillance cameras ny when the lighting conditions are right, security cameras work perfectly and are able to capture high resolution images at full color. However, when darkness sets in, surveillance cameras require a source of lighting.

The type of lighting used with CCTV cameras differs depending on the application. For instance, cameras fitted with built-in Infrared cut-filters are ideal for covert surveillance operations. Infrared light is invisible to the human eye, but visible to the cameras. Hence, the IR cameras are able to capture high-resolution color images under normal lighting conditions, as well as clear black and white images under low lighting conditions.

External lighting can also be used to enable cameras see at night, especially in non-covert operations. In this regard, powerful lights are mounted both inside and outside the facility in order to create lighting conditions similar to daylight. The choice of lights ranges from LED lights, halogen floodlights, and metal halide lamps.

Light Level

One of the features of CCTV cameras is the Lux number, which is normally indicated on the camera or as a technical spec on the owner's manual. The Lux number represents the level of lighting at which a camera is able to give the best image.  When choosing nighttime surveillance cameras, you should go for the ones with lower Lux numbers since they are capable of giving better image quality under low lighting. 

For the best advice in Home and Business Security Solutions, talk to I-Tech Security.


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