CCTV Night Vision Guide: Infrared vs 24/7 ColorVu

How Night Vision Has Transformed CCTV

For decades, security cameras at night produced grainy, monochrome (black-and-white) video illuminated by red-glowing infrared (IR) LEDs. While infrared remains effective for basic motion detection, investigators often struggled to identify clothing colors, vehicle paint shades, or facial features after an incident.

With revolutionary technologies such as Hikvision ColorVu and CP Plus Full-Color Guard+, property owners can now achieve crisp, vibrant color video 24 hours a day. Check out our installed hardware on our main CCTV Installation in Kanchipuram authority page.

Comparing Night Vision Technologies

Key Technical Factors in Night Surveillance

• Aperture Rating (f-number): Standard cameras feature F2.0 apertures. ColorVu lenses use F1.0 apertures, admitting significantly more photons to the sensor surface.
• Wide Dynamic Range (WDR): Critical for outdoor gate cameras. True 120dB WDR prevents camera blinding caused by bright vehicle headlights pulling into parking driveways.
• Spiderweb & Glare Management: Traditional IR LEDs attract insects and spiders, which spin webs in front of the lens and cause white blinding glare. ColorVu’s warm light does not emit the infrared wavelengths that insects flock toward.
• Camera Housing: Outdoor nighttime cameras must have minimum IP67 weatherproof seals to prevent internal lens condensation during humid nights.