

5MP 2.5mm M12 fisheye lens with up to 186° diagonal FOV, IMX347 and MT9P031 compatibility, F2.8 aperture, 4.93mm BFL, and 6G+IRCF construction for ultra-wide imaging.
S02512513028F is 5-Megapixel Resolution, Ultra-Wide Angle Fisheye Lens with Built-In Filter, 2.5mm High Resolution M12/S-Mount lens, F2.8 aperture.
| IMAGE FORMAT | Max ø8.0 |
| FOCAL LENGTH | 2.5mm |
| F.O.V.(MT9P031) | 170°(D) |
| 130°(H) | |
| 98°(V) | |
| F.O.V.(IMX347) | 186°(D) |
| 176°(H) | |
| 106°(V) | |
| RESOLUTION | 5 MP |
| DISTORTION | <-68% |
| APERTURE | F2.8 |
| MOUNT | M12x0.5 |
| IRIS | Fixed |
| M.O.D. | 0.2m |
| B.F.L. | 4.93mm |
| T.T.L. | 22.9mm |
| STRUCTURE | 6G+IRCF |
This 5MP 2.5mm M12 ultra-wide fisheye lens is designed for compact camera systems requiring extensive scene coverage across different sensor configurations. With support for both the MT9P031 and IMX347 sensors, it delivers up to 186° diagonal and 176° horizontal FOV with the IMX347, providing exceptional wide-area coverage for embedded vision, smart security, robotics perception, and indoor environmental monitoring.
The lens combines a 2.5mm focal length, F2.8 aperture, 0.2m minimum object distance, 4.93mm BFL, and M12×0.5 mount in a 6G+IRCF optical construction. Its dual-sensor compatibility gives camera designers greater flexibility when selecting the imaging sensor for a wide-angle camera module. Explore our M12 Lenses for additional compact optical solutions.
Because FOV varies substantially with sensor selection, camera designers should evaluate the actual sensor format before finalizing the optical configuration. Our Sensor Guide explains how sensor size affects lens coverage, while the FOV Calculator can help estimate field coverage.
This 2.5mm M12 fisheye lens is designed for extreme wide-area imaging where maximizing scene coverage is the primary requirement. Its ability to provide different FOV configurations with the MT9P031 and IMX347 sensors makes it suitable for camera platforms that may use different sensor architectures.
Designed for wide-area environmental perception and compact monitoring applications, the lens can capture a large surrounding scene from a relatively short installation distance, making it useful where reducing blind areas is more important than maintaining rectilinear image geometry.
Typical applications include:
The <-68% distortion specification indicates that this lens is optimized for ultra-wide scene coverage rather than precision geometric imaging. It is therefore better suited to monitoring and environmental perception than dimensional measurement, metrology, or distortion-sensitive inspection.
For applications where optical distortion must be tightly controlled, explore TOWIN’s Low Distortion Lens solutions.
The lens can be integrated into:
For application-specific optical solutions, explore our Smart Security Solutions, Robotics Vision Solutions, and Machine Vision Solutions.
Q: What is the maximum FOV of this 2.5mm M12 lens?
A: With the IMX347 sensor, the lens provides up to 186° diagonal and 176° horizontal FOV, with 106° vertical FOV. With the MT9P031, the FOV is 170° diagonal, 130° horizontal, and 98° vertical.
Q: Why does the FOV change between MT9P031 and IMX347?
A: FOV depends on the active sensor dimensions as well as the lens focal length. Different sensor formats and active areas therefore produce different FOV values with the same 2.5mm lens.
Q: Is this lens suitable for fisheye applications?
A: Yes. The lens provides an extremely wide FOV, reaching 186° diagonal with the IMX347, making it suitable for fisheye-style monitoring and environmental perception.
Q: Is this a low-distortion M12 lens?
A: No. The specified distortion is below -68%, so the lens is optimized for extremely wide coverage rather than accurate geometric reproduction or precision measurement.
Q: What is the minimum object distance of this lens?
A: The specified M.O.D. is 0.2m, allowing the camera to capture relatively close subjects while maintaining its ultra-wide viewing coverage.
Q: What does the 6G+IRCF optical structure mean?
A: The lens uses a six-element glass optical construction with an IR cut filter. IRCF indicates an IR filtering component and should not be interpreted as an IR-corrected optical design.
Q: Can this lens be used for machine vision systems?
A: Suitable for machine vision tasks like environmental sensing and wide-area object detection, but high distortion rules out precision dimensional measurement and geometry-critical applications.
Q: Can TOWIN customize this M12 fisheye lens?
A: TOWIN can evaluate customized optical requirements such as focal length, sensor compatibility, FOV, mechanical dimensions, and other project-specific parameters. Contact the TOWIN engineering team to discuss your camera project.
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