CCTV Night Vision Explained: IR, Colour Night Vision, and Low-Light Cameras
Night vision specs can be confusing. Understand IR range, colour night vision, and why more megapixels alone won't solve a dark, unclear image.
Key Takeaways
- Traditional IR night vision produces black-and-white footage using infrared light invisible to the eye
- Colour night vision uses ambient or supplemental visible light to keep footage in colour after dark
- Pointing a camera directly at a bright light source can wash out or distort night footage
- Real sample footage from a specific camera model tells you more than a spec sheet number
Night is when most residential incidents actually happen, yet night vision is often the least understood part of a CCTV purchase. Useful footage after dark depends on more than a headline 'night vision range' number on the box.
How Traditional IR Night Vision Works
Most CCTV cameras use infrared LEDs to illuminate the scene with light invisible to the human eye, then capture that reflected infrared light in black and white. This works well in complete darkness and doesn't require any visible light source, but it loses colour information — useful for detecting movement and general activity, less useful for identifying specific colours like clothing or a vehicle.
IR range varies significantly between camera models, and the stated range in metres often assumes ideal conditions. Real-world effective range, especially for identifying detail rather than just detecting movement, is usually shorter than the spec sheet number.
Colour Night Vision: The Newer Alternative
Colour night vision cameras use a larger, more light-sensitive sensor, sometimes combined with a supplemental white light, to maintain colour footage even in low light. This can be genuinely useful for identifying details like clothing colour or vehicle colour that black-and-white IR footage simply can't capture.
The trade-off is that colour night vision typically needs some ambient light or a supplemental light source to perform well — in complete darkness with no light at all, traditional IR often still outperforms it.
For a well-lit driveway or entrance, colour night vision can be a genuine upgrade. For a genuinely dark garden area with no ambient light, traditional IR night vision usually performs more reliably.
Common Night Vision Mistakes
Pointing a camera directly toward a security light, streetlamp, or reflective surface can overwhelm the camera's exposure at night, washing out the image or creating a glare halo that obscures anything nearby. This is one of the most common and easily fixed night vision problems we encounter during installations.
More megapixels doesn't automatically mean better night footage either — sensor size and quality matter more in low light than raw resolution. A lower-megapixel camera with a larger, more light-sensitive sensor can outperform a higher-megapixel camera with a small sensor after dark.
- Avoid pointing cameras directly at bright lights or reflective surfaces
- Choose colour night vision for well-lit areas, traditional IR for genuinely dark ones
- Prioritise sensor quality over raw megapixel count for night performance
- Review actual night sample footage before choosing a camera model
Frequently Asked Questions
Is colour night vision better than traditional infrared night vision?+
It depends on the location. Colour night vision performs well with some ambient or supplemental light and can capture useful colour detail. In genuinely dark areas with no ambient light, traditional infrared night vision usually still performs more reliably.
Why does my camera's night footage look washed out?+
This is usually caused by the camera pointing directly at a bright light source, streetlamp, or reflective surface, which overwhelms the exposure at night. Repositioning or re-angling the camera typically resolves it.
Does a higher megapixel camera mean better night vision?+
Not necessarily. Sensor size and quality matter more for low-light performance than raw megapixel count. A camera with a larger, more light-sensitive sensor can outperform a higher-resolution camera with a smaller sensor after dark.
Share this article
Want cameras that actually perform well at night?
We test real night performance on site and position cameras for genuine identification, not just a wide, unclear image.