Wide Angle Lens – S02812710420F

S02812710420F is 2.8mm High Resolution wide angle lens with IRCF, 1/2.7″ S-Mount Lenses with Low F-number (Fast Lenses), F2.0 3-Megapixel CCTV lens.

2.8mm M12 Wide Angle Lens

This 2.8mm 3MP M12 wide angle lens is designed for compact camera systems that need broad scene coverage without using an extremely long optical assembly. With a 130° diagonal FOV, 104° horizontal FOV, and 78° vertical FOV on a 1/2.7″ image format, it provides extensive coverage for security monitoring, smart cameras, embedded vision, and other space-constrained imaging applications.

Featuring an F2.0 aperture, M12×0.5 mount, fixed iris, 0.3m minimum object distance, and 5G+IRCF optical structure, this lens offers a practical combination of wide-angle coverage, compact integration, and visible-light imaging support.

For more compact optical configurations, explore TOWIN’s M12 Lenses.

M12 Wide Angle Lens Core Highlights

• 130° ultra-wide diagonal FOV provides broad scene coverage from a compact 2.8mm focal length.
• F2.0 aperture supports practical light gathering for indoor and general-purpose surveillance applications.
• 1/2.7″ sensor compatibility makes the lens suitable for compact 3MP camera modules.
• M12×0.5 mount enables straightforward integration into small camera housings and embedded imaging systems.
• 5G + IRCF structure combines a multi-element optical construction with an IR cut filter configuration for visible-light camera applications.

M12 Wide Angle Lens Applications

Smart Security & Surveillance

The 130° diagonal field of view allows a single compact camera to cover a relatively large area, making this lens suitable for security systems where installation space and viewing coverage are both important.

Typical applications include indoor surveillance, entrance monitoring, retail observation, residential security cameras, and compact network camera modules.

Designed for compact security surveillance, this 2.8mm lens provides wide scene coverage while retaining a practical M12 mounting configuration.

For application-specific optical solutions, see TOWIN’s Smart Security solutions.

Embedded Wide-Angle Camera Systems

The combination of a short 2.8mm focal length and M12×0.5 mount makes this lens suitable for embedded camera designs where a wide viewing angle is needed without significantly increasing the size of the optical assembly.

Compatible device types can include:

• Compact IP cameras
• Indoor security cameras
• Smart home cameras
• Retail monitoring cameras
• Embedded IoT cameras
• Entrance monitoring systems
• Small surveillance camera modules

Its 0.3m MOD also provides useful flexibility when the camera needs to monitor objects or people relatively close to the lens.

Visible-Light Monitoring

This model uses a 5G + IRCF structure. The IRCF designation indicates an IR cut filter configuration rather than an IR-corrected optical design. Therefore, this lens is better positioned for visible-light camera systems where infrared filtering is part of the camera architecture.

For projects that require separate optical filtering components, TOWIN also provides Optical Filters and IR Cut Filter Switcher Holders.

Why Choose This 2.8mm M12 Wide Angle Lens?

Choosing a wide-angle lens is often a balance between scene coverage, sensor compatibility, optical distortion, aperture, and physical installation space. This model uses a 2.8mm focal length to achieve a 130° diagonal FOV while maintaining a compact M12×0.5 mounting interface.

Compared with more extreme fisheye designs, its 130° diagonal coverage provides a practical middle ground for applications that require a large viewing area without necessarily requiring the maximum possible field of view.

The F2.0 aperture is another useful feature for compact security and embedded camera platforms, while the 5.7mm BFL provides an important reference when matching the lens to the camera’s mechanical and sensor configuration.

When selecting a lens for a specific sensor, TOWIN’s Sensor Guide can help explain sensor-format compatibility. You can also use the FOV Calculator to compare field of view across different focal lengths and sensor sizes.

Frequently Asked Questions

Q: What is the field of view of this 2.8mm M12 lens?
A: On a 1/2.7″ image format, the lens provides a 130° diagonal FOV, 104° horizontal FOV, and 78° vertical FOV.

Q: Is this lens suitable for wide-angle surveillance?
A: Yes. Its 130° diagonal field of view is well suited to compact surveillance cameras that need broad scene coverage, such as indoor monitoring, entrance surveillance, and retail security.

Q: Is this a fisheye lens?
A: The lens has a very wide field of view and can be used in fisheye-style wide-area imaging applications, but its 130° diagonal FOV is less extreme than many dedicated 170°–200° fisheye designs. It is therefore best positioned as a wide-angle M12 lens.

Q: Is this lens low distortion?
A: No. The specified distortion is less than 50%, so the lens should not be classified as a low-distortion lens. Its optical configuration prioritizes wide scene coverage.

Q: Does IRCF mean the lens is IR corrected?
A: No. IRCF refers to an IR cut filter configuration and should not be confused with IR-corrected optics. An IR-corrected lens is specifically designed to maintain optical focus across different wavelengths.

Q: What sensor size is this lens designed for?
A: The specified image format is 1/2.7″, with a resolution rating of 3MP.

Q: What mount does this lens use?
A: It uses an M12×0.5 mount, making it suitable for compact camera modules and embedded imaging equipment that use the M12 mounting standard.

Q: What is the minimum object distance?
A: The minimum object distance is 0.3m, allowing the lens to capture relatively close subjects while maintaining its wide viewing coverage.

Related Optical Resources

The appropriate wide-angle lens depends on the relationship between focal length, sensor size, field of view, working distance, and acceptable distortion. TOWIN’s Lens Selection Guide provides practical guidance for comparing these optical parameters.

Because wide-angle lenses naturally introduce more geometric distortion than narrow-field lenses, understanding distortion is also important during system design. TOWIN’s Distortion Guide explains how lens distortion affects captured images and when a low-distortion optical design may be more appropriate.

For additional optical information, visit the Lens Basics section of the TOWIN Knowledge Center.

If you need a different focal length, sensor format, mount, or optical configuration, contact TOWIN for lens selection and OEM/ODM support.

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