CCTV Lens – CCL12704FMP

CCL12704FMP is CCTV lens 1/2.7″ 4mm fixed focal length lens, F1.6 Low F-number CS mount lens with IR correction, 2-Megapixel Wide Angle Lens.

For additional professional surveillance configurations, including different focal lengths and optical specifications, engineers can review Towin’s CS-Mount Lenses range.

2MP 4mm CS-Mount Wide Angle IR Corrected Fixed Focal Lens

This 2MP 4mm CS-mount wide angle fixed focal lens provides an 80° horizontal field of view, F1.6 aperture, and IR-corrected optical performance for broad-area CCTV monitoring. Its compact fixed-focus configuration is designed for security cameras that need consistent wide-area coverage across entrances, indoor spaces, corridors, and other general surveillance environments.

Product Core Highlights

• 4mm wide-angle focal length provides broad scene coverage for general CCTV monitoring.
• 80° horizontal FOV helps capture larger areas from a single camera position.
• F1.6 aperture provides a relatively bright optical configuration for indoor security applications.
• 2MP optical performance supports standard HD surveillance camera systems.
• IR-corrected optics help maintain focus consistency between visible and near-infrared imaging.

Applications & Compatible Devices

Core Application Scenes

This 4mm CS-mount wide angle CCTV lens is designed for surveillance systems where broad scene coverage is more important than narrow, target-specific framing. Its 80° horizontal field of view allows a single camera to monitor a relatively large area, making it suitable for locations where cameras are installed at moderate distances from the monitored scene.

The lens is particularly suitable for indoor entrances, office areas, retail spaces, corridors, reception zones, small warehouses, and general security monitoring. The 4mm focal length provides a wider perspective than the 8mm, 12mm, and 16mm fixed focal lenses in this series, allowing the camera to capture more of the surrounding environment.

Its fixed focal configuration is useful for installations where the camera position and required coverage are predetermined. Once the lens has been manually focused, the viewing angle remains stable without requiring motorized zoom or focus mechanisms.

The F1.6 aperture and IR correction also make the lens suitable for security cameras that may experience changing illumination or use near-infrared lighting at night.

For choosing the appropriate focal length based on camera position, sensor format, and required scene width, engineers can refer to Towin’s Lens Selection Guide.

Compatible Device List

• 1/2.7″ 2MP CCTV cameras: Designed for surveillance cameras using 1/2.7″ image sensors with 2MP imaging requirements.
• CS-mount security cameras: Compatible with camera bodies using the CS mounting interface.
• Indoor wide-area surveillance cameras: Suitable for offices, reception areas, retail stores, corridors, and other indoor spaces.
• Entrance monitoring cameras: The 80° horizontal FOV can cover a relatively broad area around entrances and access points.
• Small warehouse surveillance: Suitable for monitoring general activity across aisles, storage areas, and workspaces.
• Day/night CCTV cameras: IR correction supports camera systems that use near-infrared illumination for nighttime operation.

For broader security applications, this lens can be integrated into Towin’s Smart Security solutions where wide-area monitoring is required.

Optical Selection Considerations

The 4mm focal length and 80° horizontal FOV make this lens particularly suitable for broad-area surveillance. However, the actual scene coverage depends on sensor dimensions and camera installation distance, so the final system configuration should be evaluated before deployment.

For estimating the required focal length from the target distance and desired field of view, engineers can use Towin’s Focal Length Calculator.

This lens is not specified as a low-distortion optical design because no distortion value is provided. If straight-line preservation or geometric accuracy is important, the distortion characteristics should be evaluated separately using the Distortion Guide.

Designed for wide-area CCTV surveillance, indoor security monitoring, entrances, retail spaces, and day/night camera systems requiring a 4mm CS-mount wide angle lens.

Frequently Asked Questions

Q: What type of lens is this 4mm CS-mount lens?
A: It is a 2MP fixed focal CCTV lens featuring a 4mm focal length, CS mount, F1.6 aperture, manual focus, and IR-corrected optical performance.

Q: What is the horizontal field of view of this lens?
A: The specified horizontal field of view is 80° for the 1/2.7″ image format.

Q: Is the 4mm CS-mount lens a wide angle lens?
A: Yes. Its 80° horizontal field of view provides broad scene coverage, making it suitable for wide-angle CCTV monitoring applications.

Q: Is this lens a zoom lens?
A: No. It is a fixed focal lens. The focal length remains at 4mm, providing a consistent viewing angle after installation.

Q: What cameras are compatible with this lens?
A: The lens is specified for 1/2.7″ image format cameras and uses a CS mounting interface. It is suitable for compatible 2MP CCTV and security camera systems.

Q: What is the benefit of the F1.6 aperture?
A: F1.6 provides a relatively bright optical configuration, which can be useful in indoor surveillance environments and other applications where available light varies.

Q: What does IR corrected mean?
A: IR correction is designed to reduce focus shifts between visible and near-infrared wavelengths, helping maintain more consistent focus when infrared illumination is used.

Q: What is the minimum object distance of this lens?
A: The specified M.O.D. is 0.1m, allowing the lens to focus on relatively close subjects when required by the installation.

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