CCTV Lens – CCL120412AMP

CCTV lens 1/2″ 4-12mm lens CS mount lens, Auto-iris zoom lens,F1.6 aperture, with 3MP resolution, Ideal for flexible surveillance applications.

4-12mm CS-Mount IR Corrected Varifocal CCTV Lens

This 4-12mm CS-Mount zoom lens is a 3MP varifocal lens designed for professional CCTV and security imaging systems requiring flexible field-of-view adjustment. With a fast F1.6 aperture, 98° to 32° horizontal FOV, manual zoom and focus, and IR-corrected optical performance, it provides reliable imaging from wide-area monitoring to more focused surveillance scenes.

The lens is well suited for security cameras, indoor and outdoor monitoring systems, and other applications where installation distance and viewing coverage may vary.

Product Core Highlights

• 4-12mm Varifocal Range: Provides flexible viewing coverage from wide-area scenes to narrower surveillance targets.
• Wide 98° Horizontal FOV: The 4mm focal length helps cover larger monitoring areas with fewer blind spots.
• Fast F1.6 Aperture: Allows more light to reach the sensor for improved imaging in challenging lighting conditions.
• IR-Corrected Optical Design: Helps maintain consistent focus when switching between visible and near-infrared illumination.
• Manual Zoom and Focus: Enables precise optical adjustment during camera installation and field deployment.

CS-Mount CCTV Lens Applications

Core Application Scenes

This CS-Mount 4-12mm zoom lens is designed for surveillance installations where the required viewing area can change according to camera position, mounting height, and target distance. At 4mm, its 98° horizontal FOV is suitable for monitoring relatively broad indoor or outdoor areas, while the 12mm setting provides a narrower view for observing specific entrances, corridors, gates, or other designated zones.

The combination of an F1.6 aperture and IR-corrected optical design makes this lens particularly useful for security cameras operating under changing illumination. It can support day-and-night surveillance environments where visible light and infrared illumination are both part of the imaging system.

For projects using different camera-to-target distances, the variable focal length provides installation flexibility without requiring a completely different fixed focal lens for every monitoring location.

Compatible Device List

• CCTV Security Cameras: Suitable for professional surveillance cameras using 1/2″ image sensors and CS-Mount interfaces.
• Indoor Security Systems: The wide-angle 4mm setting is useful for offices, retail spaces, corridors, entrances, and other areas requiring broad scene coverage.
• Outdoor Surveillance Cameras: The 4-12mm range allows installers to balance area coverage and target detail according to camera mounting distance.
• Gate and Access Monitoring: The longer focal-length setting can provide a more focused view of entrances, gates, and controlled access points.
• Day/Night Camera Systems: IR-corrected performance helps maintain optical focus when surveillance cameras switch between visible-light and infrared imaging.
• Professional Video Surveillance Equipment: The CS-Mount configuration supports integration with compatible CCTV camera platforms and optical assemblies.

Designed for flexible day-and-night CCTV surveillance and security monitoring applications.

For additional information about selecting the right optical configuration, see our CS-Mount Lenses and Vari-Focal CCTV Lens product categories.

When choosing a lens for a specific surveillance distance, the Lens Selection Guide can also help determine the appropriate focal length and viewing coverage. For applications where field-of-view requirements need to be calculated precisely, use our FOV Calculator.

Frequently Asked Questions

Q: What type of lens is this?

A: This is a 4-12mm CS-Mount varifocal zoom lens with manual zoom and focus, designed primarily for CCTV and professional security surveillance applications.

Q: What sensor size is this lens designed for?

A: The lens is designed for a 1/2″ image format, making it suitable for compatible CCTV cameras using 1/2″ sensors.

Q: What is the field of view of the 4-12mm lens?

A: The horizontal field of view ranges from 98° at 4mm to 32° at 12mm, allowing users to switch between broad scene coverage and more focused surveillance views.

Q: Is this lens suitable for day-and-night surveillance?

A: Yes. The lens is IR corrected, which helps maintain consistent optical focus when a camera operates across visible and near-infrared wavelengths.

Q: What is the advantage of the F1.6 aperture?

A: The fast F1.6 aperture allows more light to reach the image sensor, helping the camera produce usable images in lower-light surveillance environments.

Q: Can the focal length be adjusted after installation?

A: Yes. The lens features manual zoom, allowing installers to adjust the focal length from 4mm to 12mm to match the required surveillance coverage.

Q: What is the minimum object distance of this lens?

A: The minimum object distance is 0.3m, providing flexibility for surveillance scenes where the camera needs to observe relatively close subjects.

Q: Can TOWIN customize this CS-Mount lens for a specific project?

A: TOWIN can evaluate optical and mechanical customization requirements for OEM and ODM projects. Customers can contact TOWIN to discuss project-specific requirements.

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