Contrary to popular belief, most property crimes—including burglaries and package theft—happen during the day, not under cover of darkness. But night still brings unique challenges: fewer people around, limited visibility, and more opportunity for intruders to move unseen. If your security camera can’t see clearly after dark, you’re missing protection when you might need it most.
Night vision lets security cameras capture what the human eye can’t see in the dark. Some cameras shine invisible infrared light to illuminate a scene, while others rely on light-sensitive sensors to amplify what little light is already there. More advanced models can maintain color, adapt to changing light, or light up the scene with built-in spotlights. And there are the many camera/floodlight combos.
The following sections break down the most common types of night vision you’ll find in modern home security cameras, along with what each one does best.
Standard infrared (IR) night vision
Standard infrared (IR) night vision remains the backbone of most home security cameras. It works by using IR LEDs—infrared light-emitting diodes—positioned near the lens to flood the area with light. This light falls just beyond the visible spectrum, with wavelengths typically between 750 nanometers (nm) and 1 millimeter (mm). Most security cameras use IR LEDs that emit at 850nm or 940nm. The camera’s image sensor detects this infrared light and converts it into a black-and-white image, making it possible to see what’s happening even in complete darkness.
Black-and-white night vision on the very affordable Blink Outdoor 4 home security camera, as recorded on a Blink Sync XR.
Michael Brown/Foundry
The biggest advantage of IR night vision is reliability. It doesn’t require streetlights, porch lights, or any other source of illumination. It’s also cost-effective, which is why you’ll find it not only on almost every budget-friendly camera, but cameras at nearly any price.
Another plus: IR is discreet. Cameras that use 850nm infrared LEDs emit a faint red glow, which provides brighter and longer-range illumination, making them ideal for outdoor areas where visibility is more important than stealth. Cameras using 940nm LEDs, on the other hand, are completely invisible to the human eye and are better suited for indoor use or locations where you don’t want the IR source to be noticeable. The trade-off is that 940nm LEDs generally have shorter range and reduced brightness compared to 850nm. Unlike a bright spotlight, the faint red glow of 850nm LEDs or the invisible beam of 940nm LEDs won’t alert intruders or bother neighbors.
The downside is reduced visual detail. IR footage is always black-and-white, which makes it harder to distinguish details like clothing color or vehicle paint. The range is also limited, often topping out at around 25 to 30 feet for entry-level models.
Budget-friendly cameras often rely solely on infrared for night vision, and many do it well. Models like the Eufy Security Indoor Cam and Lorex 2K Indoor Pan-Tilt Wi-Fi Camera offer strong IR performance, providing crisp and clear footage when the lights go down.
Full-color night vision (low-light color sensors)
Michael Brown/Foundry
Full-color night vision takes a different approach from traditional IR by using low-light sensors and advanced image processing to maintain color in dim environments. Instead of switching to black-and-white when the light fades, these cameras amplify the available light, such as from a streetlamp or a porch light, to produce a more natural-looking video. The result is footage that looks closer to daytime recordings, with richer detail and less guesswork when identifying people or objects.
Starlight sensors fall into this category, but they represent the high end of performance. These cameras use larger or more sensitive CMOS chips, wide-aperture lenses, and advanced noise-reduction algorithms to produce clear color video in extremely low light—often down to 0.01 to 0.1 lux, roughly the brightness of a full moon or dim streetlight. Originally used in professional surveillance, this technology is now found in consumer cameras that deliver exceptional nighttime clarity without needing spotlights.
The biggest advantage of full-color night vision is its ability to capture key identifying details, such as the color of a car or the clothing someone is wearing. This can make a huge difference when reviewing footage as forensic evidence or sharing clips with law enforcement.
Color night vision, however, has its limits. It still needs at least some ambient light to work. In pitch-black settings, these cameras often revert to standard IR mode, resulting in black-and-white video. Some models address this by adding a built-in spotlight to provide the needed light for color capture, a feature we’ll explore in the next section.
If maintaining color footage in near-dark environments is a priority, the Annke NightChroma NC500 is a strong option. It uses a large f/1.0 aperture and a backside-illuminated (BSI) image sensor—both designed to capture more light in low-light conditions. Combined with Annke’s Acme Color Night Vision technology, the NC500 can produce full-color video even in near-total darkness, without relying on a spotlight.
Spotlight-enhanced night vision
Spotlight-enhanced night vision uses powerful built-in LEDs or floodlights to light up the scene, letting the camera record full-color video no matter how dark it is. When motion is detected, the lights kick on and provide enough illumination for the camera’s sensor to capture sharp, vivid footage, much like it would during the day.
Arlo Pro 5S 2K (model number VMC4060P)
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