Night vision security cameras are very helpful in providing around-the-clock surveillance for homes and businesses. Their ability to see in the dark is thanks to advanced IR (infrared) surveillance technology. However, when shopping for a night vision camera, simple wording such as “infrared (IR) illumination” and “night vision” is not enough. You want to look for specific features to ensure you are choosing the best night vision security cameras.
Three important features to look for include:
The quality of your night vision security camera will be determined by these features.
IR Cut Filter
Night vision security cameras with infrared cut-off filters improve image clarity (especially in daytime) and can prevent out of focus images. The way the filter works is quite simple, yet makes all the different in video and image quality.
The IR cut filter is physically moved over the lens when daylight (white light) is detected to block out the IR light (that would affect the image quality). When the light levels drop to the point where night vision is necessary, the camera will move the lens out of the way. This “filter switch” allows the camera to pick up the same colors as the human eye to record natural looking images and results in better images overall. Without these filters, there’s no way to prevent full-spectrum light, thus, daytime images would suffer from distortion and possible loss of focus.
Powerful Illumination (IR LEDs) Beam
Simply put – the more powerful the illumination, the better the night vision will be. For example, if you are looking for outdoor cameras, you want cameras that produce something in the neighborhood of 100 ft. of IR illumination.
Before discussing IR illuminators, the Field of View (FOV) should be understood. If you think of it in terms of binoculars, the field of view is everything you see when looking into them. What you cannot see is outside of the field of view. Often times, the infrared illuminators in a night vision security camera don’t match its FOV, thus the IR-beam is not illuminating the total area captured by the lens.
For the night vision cameras with an IR illuminator narrower than the FOV, you get a bright area in the middle of the image with the darkness growing as you get further from the center (ex. the spotlight effect). This is problematic as it makes it nearly impossible to identify areas outside of the center of the image. Finding a night vision camera with an IR illuminator that is equal to the FOV may cost more, but is well worth it.
Although seeking out specifications and ensuring that night vision cameras meet your expectations and requirements seems like a tedious task, it is well worth the security and peace of mind when it comes down to it.
Need help choosing a night vision security camera? Contact us at 888-203-6294 to discuss your options. You may also browse our stock of IR night vision cameras and other surveillance equipment online at SecurityCamExpert.com. For the latest updates, connect with us on Facebook, Google+, Twitter, LinkedIn, and Pinterest.