

This 12mm M12 low distortion lens provides 3MP resolution, F2.0 aperture, controlled FOV, and <4.3% distortion for compact vision and inspection systems.
Wide-angle 3 – Megapixel low distortion M12 – mount lens suitable for general surveillance, featuring 12mm focal length, F2.0 aperture, and 0.3m MOD.
| IMAGE FORMAT | 1/2.5″ |
| FOCAL LENGTH | 12mm |
| F.O.V.@1/2.5″ | 35°(D) |
| 28°(H) | |
| 21°(V) | |
| DISTORTION | <-4.3% |
| F.O.V.@1/2.7″ | 32°(D) |
| 29°(H) | |
| 18°(V) | |
| DISTORTION | <-3.6% |
| RESOLUTION | 3Megapixel |
| APERTURE | F2.0 |
| MOUNT | M12X0.5 |
| IRIS | Fixed |
| B.F.L. | 7.5mm |
| M.O.D. | 0.3m |
This 12mm M12 low distortion lens is designed for compact camera systems that require controlled image geometry, stable framing, and reliable 3MP imaging. With a 1/2.5″ image format, F2.0 fixed aperture, M12×0.5 mount, and distortion below 4.3%, it provides a balanced optical solution for embedded vision, inspection, monitoring, and other space-constrained imaging systems.
For applications requiring precise sensor and lens matching, TOWIN offers a range of M12 Lenses, while the Lens Selection Guide provides additional guidance on focal length, sensor format, FOV, and application requirements.
This 12mm M12 low distortion fixed focal lens is optimized for imaging systems where accurate scene representation and controlled coverage are more important than extremely wide-angle viewing. Its 28° horizontal FOV on a 1/2.5″ sensor provides a relatively focused viewing area, while the specified distortion of less than 4.3% helps maintain more consistent geometric representation across the image.
The lens is well suited to compact inspection cameras, embedded industrial vision modules, equipment monitoring systems, smart access devices, and localized visual inspection. Its 0.3m minimum object distance also makes it practical for applications where the camera is installed relatively close to the monitored object.
For inspection and measurement-related applications, controlled optical distortion can help reduce geometric deviation in captured images. Engineers can refer to TOWIN’s Distortion Guide when evaluating the impact of lens distortion on image analysis and system accuracy.
Designed for low-distortion compact inspection and controlled-area imaging applications.
The lens is specified for both 1/2.5″ and 1/2.7″ image formats. On a 1/2.5″ sensor, it provides 35° diagonal, 28° horizontal, and 21° vertical FOV. On a 1/2.7″ sensor, the specified FOV is 32° diagonal, 29° horizontal, and 18° vertical.
Because field of view changes according to sensor dimensions, engineers should evaluate the image format together with focal length and working distance during camera design. The Sensor Guide and FOV Calculator can be used to verify the expected coverage before selecting the final lens configuration.
Q: What type of lens is this?
A: This is a 12mm M12 low distortion fixed focal lens designed for compact imaging systems requiring controlled field of view, 3MP resolution, and reduced optical distortion.
Q: What sensor sizes are compatible with this lens?
A: The lens is specified for 1/2.5″ and 1/2.7″ image formats. The field of view and distortion specifications vary according to the sensor format.
Q: What is the field of view of this 12mm M12 lens?
A: With a 1/2.5″ sensor, the lens provides 35° diagonal, 28° horizontal, and 21° vertical FOV. With a 1/2.7″ sensor, the specified FOV is 32° diagonal, 29° horizontal, and 18° vertical.
Q: Is this considered a low distortion lens?
A: Yes. The lens is suitable for low distortion lens applications, with specified distortion below 4.3% on a 1/2.5″ sensor and below 3.6% on a 1/2.7″ sensor.
Q: What is the aperture of this lens?
A: The lens features a fixed F2.0 aperture, providing a stable optical configuration for compact camera applications.
Q: What is the minimum object distance?
A: The specified M.O.D. is 0.3m, making the lens suitable for applications where the camera and subject are positioned approximately 300mm or more apart.
Q: Is this 12mm lens suitable for machine vision?
A: It can be used for compact machine vision and inspection applications where 3MP resolution, moderate FOV, fixed focal length, and controlled distortion meet the system requirements. Final suitability should be evaluated according to the camera sensor, working distance, and required field coverage.
Q: Can this M12 low distortion lens be customized?
A: TOWIN can evaluate optical and mechanical requirements for OEM and ODM projects. Customers can contact TOWIN with their sensor, working distance, FOV, mounting, and camera integration requirements.
When selecting a 12mm M12 low distortion lens, engineers should evaluate focal length, sensor format, working distance, field of view, resolution, and distortion together. This model provides a relatively focused viewing angle combined with controlled distortion, making it suitable for applications where accurate scene representation is more important than maximum scene coverage.
Compared with shorter focal-length M12 lenses, the 12mm configuration provides a narrower and more controlled viewing area. This can be beneficial when the camera needs to concentrate on a specific object, inspection zone, or monitoring area.
For additional information about focal length and optical parameters, visit the Lens Basics section. Engineers can also use the Focal Length Calculator when evaluating focal length requirements for a new camera system.
For OEM, ODM, or application-specific optical requirements, contact TOWIN to discuss sensor format, FOV, working distance, distortion, and mechanical integration requirements.
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| SENSOR | |
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| RESOLUTION | |
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| Max Dist. | |
| FEATURE | |
| MOUNT | |
| IRIS | |
| T.T.L.(mm) | |
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