Wide Angle Lens – S02812713320F

S02812713320F is 2.8mm High-Quality Wide Angle Lens with Built-In Filter, Low F-number M12/S-Mount Lens, 4-Megapixel resolution F2.0 CCTV lens.

2.8mm 4MP M12 Ultra Wide Angle Lens for Embedded Vision

This 2.8mm 4MP M12 ultra-wide angle lens is designed for compact imaging systems that require a broad field of view from a 1/3-inch image sensor. With a 146° diagonal FOV, F2.0 aperture, M12×0.5 mount, and 4MP optical performance, it provides wide scene coverage while maintaining a compact optical structure.

The lens is compatible with the OV4689 sensor and features a fixed focal length, fixed iris, manual focus, and built-in IRCF structure. It is well suited for smart security cameras, embedded vision devices, IoT imaging systems, panoramic scene monitoring, and other applications where wide-area coverage is more important than low geometric distortion.

For more M12 optical solutions, explore TOWIN’s M12 Lenses and Wide Angle Lens product ranges.

Product Core Highlights

1. 146° Ultra-Wide Field of View

The 2.8mm focal length provides a 146° diagonal field of view on a 1/3-inch OV4689 sensor, allowing the camera to capture a large area from a relatively short installation distance. This makes the lens suitable for space-constrained monitoring and embedded imaging systems.

2. 4MP Resolution for Detailed Wide-Area Imaging

Designed for 4MP imaging applications, the lens provides a practical balance between wide scene coverage and image detail. It can support cameras that need to detect people, objects, entrances, vehicles, and other visual information across a broad scene.

3. F2.0 Aperture for Compact Vision Systems

The F2.0 aperture provides a useful amount of light transmission for indoor and general-purpose imaging applications. It helps maintain practical image brightness while keeping the optical structure compact.

4. Compact M12×0.5 Mount

The M12×0.5 mount makes this lens suitable for compact camera modules and embedded vision equipment. Its 17.49mm T.T.L. supports applications where installation space is limited.

5. IRCF Structure for Day/Night Camera Systems

The integrated IRCF structure is suitable for camera designs using an IR-cut filtering configuration. It should be distinguished from an IR-corrected lens: this product includes IRCF, but the supplied specifications do not indicate dedicated IR correction across the 850nm/940nm range.

M12 Ultra Wide Angle Lens Applications

Wide-Area Security Monitoring

The 146° FOV makes this lens suitable for security cameras that need to cover a relatively large area with a single compact camera. Typical scenes include entrances, corridors, small rooms, retail areas, and indoor monitoring zones.

Designed for smart security applications where broad coverage and compact camera integration are more important than ultra-low distortion.

Embedded Vision & IoT Cameras

With its M12×0.5 mount, compact 17.49mm T.T.L., and 4MP resolution, the lens can be integrated into embedded camera modules used in smart devices, IoT equipment, access terminals, and compact visual monitoring systems.

Panoramic Scene Awareness

The ultra-wide field of view allows the camera to capture a large portion of the surrounding environment. This can benefit applications such as occupancy awareness, people detection, object presence detection, and general scene monitoring.

Because the TV distortion is below -24%, the lens is better suited to scene awareness and coverage-oriented imaging than precision measurement or metrology applications.

Compatible Devices

• 1/3″ OV4689 camera modules
• 4MP security cameras
• Compact M12 camera modules
• Smart home cameras
• IoT vision devices
• Embedded monitoring cameras
• Indoor wide-area surveillance cameras
• Access control and visual monitoring equipment
• Compact AI vision devices

For application-specific optical selection, TOWIN also provides solutions for Smart Security, Machine Vision, and other embedded imaging applications.

How to Choose This 2.8mm M12 Ultra Wide Angle Lens

This lens is a good choice when the camera system requires very wide scene coverage from a 1/3-inch sensor and does not require low-distortion imaging.

Compared with a longer focal length lens, the 2.8mm design provides substantially wider coverage. However, the -24% TV distortion means straight lines near the image edges may appear curved. Therefore, it is more appropriate for monitoring, detection, and scene awareness than applications requiring accurate dimensional measurement.

When selecting an M12 lens, engineers should evaluate sensor format, focal length, FOV, distortion, aperture, mounting interface, and mechanical dimensions together. TOWIN’s Lens Selection Guide can help engineers compare these optical parameters before selecting a lens.

Frequently Asked Questions

Q: Is this a fisheye lens?
A: No. Although the lens provides a very wide 146° diagonal FOV, it should not be classified as a fisheye lens based on the supplied specifications. For TOWIN’s product classification, it is better positioned as an ultra-wide angle M12 lens because the FOV is below the commonly used 180° fisheye range.

Q: What sensor is this 2.8mm lens designed for?
A: The specified configuration is designed for a 1/3-inch OV4689 sensor and provides a 146° diagonal, 121° horizontal, and 64° vertical field of view.

Q: Is this lens IR corrected?
A: No IR correction is specified. The structure is listed as 6G + IRCF, meaning the lens incorporates an IR-cut filter configuration. IRCF should not be confused with an IR-corrected optical design.

Q: What applications are suitable for this 4MP M12 lens?
A: It is suitable for wide-area security monitoring, smart home cameras, IoT vision devices, embedded camera modules, access monitoring, and other applications requiring broad scene coverage from a compact camera.

Q: Is this lens suitable for machine vision measurement?
A: It is not the preferred choice for precision measurement because its TV distortion is below -24%. For measurement-oriented machine vision, a low-distortion lens with controlled geometric distortion would generally be more appropriate.

Q: What is the advantage of the 2.8mm focal length?
A: A 2.8mm focal length provides a very wide field of view on a 1/3-inch sensor, allowing one camera to cover a larger scene. This is particularly useful when camera installation distance or physical space is limited.

Q: What does the M12×0.5 mount mean?
A: M12×0.5 is the mechanical mounting specification of the lens, using an approximately 12mm diameter threaded mount with a 0.5mm thread pitch. It is widely used for compact camera modules and embedded imaging devices.

Related Optical Solutions

TOWIN provides a broad range of M12 Lenses for compact camera modules, including wide-angle, low-distortion, fisheye, pinhole, and other specialized optical configurations.

If your application requires a wider field of view, you can compare this lens with TOWIN’s Wide Angle Lens range. For applications where geometric accuracy is more important, see the Low Distortion Lens range instead.

For help matching focal length, sensor size, FOV, and installation requirements, use TOWIN’s FOV Calculator or contact the TOWIN optical engineering team through the Contact page.

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