CS-Mount Lens – CCL125028FMP

CS-mount lens with a 2.8mm focal length, 1/2.5″ image format, 3MP resolution, 1.6 aperture, 122° HFOV, and IR correction, CCTV lens.

1/2.5 Inch 3MP CS-Mount 2.8mm Wide Angle IR Corrected Lens

This 1/2.5″ 3MP CS-Mount lens features a 2.8mm fixed focal length and a 122° horizontal field of view for wide-area imaging with compact security cameras. With a fixed iris, manual focus, 0.1m minimum object distance, and IR corrected optical performance, it is designed for stable day-and-night surveillance and monitoring applications where broad scene coverage is required.

For more information about selecting the right optical configuration, see our Lens Selection Guide.

Product Core Highlights

• 122° Wide-Angle Coverage: The 2.8mm focal length provides a 122° horizontal FOV for monitoring broad scenes with fewer blind spots.
• 3MP Imaging Performance: Supports 3MP cameras for clear surveillance images in security and monitoring systems.
• F1.6 Aperture: The relatively wide F1.6 aperture supports efficient light transmission for indoor and low-light surveillance environments.
• IR Corrected Design: Optimized for more consistent focus performance across visible and near-infrared wavelengths, making the lens suitable for day-and-night cameras.
• Compact CS-Mount Integration: The CS-Mount interface provides compatibility with a wide range of professional CCTV and security camera platforms.

CS-Mount CCTV Lens Applications

Core Application Scenes

This 2.8mm wide angle lens is designed for applications where wide scene coverage is more important than long-distance magnification. Its 122° horizontal FOV allows a single camera to cover a large area, making it useful for indoor spaces, entrances, corridors, retail environments, and general-purpose security monitoring.

The F1.6 aperture helps the camera maintain useful image brightness in indoor and relatively low-light environments, while the IR corrected design supports day-and-night surveillance systems using infrared illumination.

Designed for wide-angle security surveillance application, this lens can help reduce the number of cameras required when monitoring relatively large areas from a fixed installation point.

Typical applications include:

• Indoor security surveillance
• Building entrance monitoring
• Retail and commercial security
• Corridor and hallway monitoring
• Office and facility surveillance
• Wide-area indoor monitoring
• Day-and-night CCTV systems
• General security camera installations

For broader security applications, explore TOWIN’s Smart Security Solutions.

Compatible Devices

This lens can be integrated with a variety of CS-Mount imaging devices, including:

• 1/2.5″ 3MP security cameras
• CS-Mount CCTV cameras
• Indoor dome cameras
• Fixed surveillance cameras
• Infrared security cameras
• Day-and-night monitoring cameras
• Commercial security camera systems
• Wide-angle monitoring cameras

The 0.1m M.O.D. also provides flexibility when the camera needs to monitor relatively close objects, such as entrances, counters, equipment areas, or confined indoor spaces.

Why Choose This 2.8mm CS-Mount Lens?

For surveillance projects, lens selection is not only about resolution. The relationship between sensor size, focal length, field of view, aperture, and mounting interface directly affects the final image.

With a 1/2.5″ image format, 2.8mm focal length, 122° horizontal FOV, F1.6 aperture, and CS-Mount interface, this lens provides a practical combination for wide-area CCTV imaging.

If you need to compare focal lengths and coverage before selecting a lens, use the FOV Calculator to estimate the required field of view.

For a more detailed explanation of focal length and image coverage, visit TOWIN’s Lens Basics.

Frequently Asked Questions

Q: What type of lens is this 2.8mm CS-Mount lens?
A: It is a fixed focal length wide angle CCTV lens designed for 1/2.5″ imaging systems. It features a 2.8mm focal length and 122° horizontal FOV for broad-area surveillance.

Q: What cameras are compatible with this lens?
A: This lens is designed for CS-Mount cameras using a 1/2.5″ image format and supporting up to 3MP resolution. It can be used with compatible CCTV, security, and monitoring cameras.

Q: Is this lens suitable for night vision cameras?
A: Yes. The lens is IR corrected, helping maintain more consistent focus performance when cameras switch between visible-light and near-infrared imaging modes.

Q: Why is the 2.8mm focal length suitable for wide-area surveillance?
A: A shorter focal length provides a wider field of view. With a 122° horizontal FOV, this 2.8mm lens can capture a broad scene from a relatively fixed camera position.

Q: What does IR corrected mean for a CCTV lens?
A: IR correction is designed to reduce focus shifts between visible and near-infrared wavelengths, helping maintain more consistent image focus in day-and-night surveillance systems.

Q: Is this a fixed focal or zoom lens?
A: It is a fixed focal lens with a 2.8mm focal length. The fixed design provides a predetermined wide field of view rather than adjustable optical zoom.

Q: Can TOWIN customize this type of CS-Mount lens?
A: TOWIN supports customized optical solutions for different imaging requirements, including focal length, sensor format, field of view, mechanical configuration, and other optical parameters. For project-specific requirements, please contact TOWIN.

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