

The TOWIN M12 12mm 5MP IR corrected lens features a 1/2.5″ image format, 36° diagonal FOV, < -4.2% distortion, F2.0 aperture, and M12x0.5 mount. Its 6G optical structure and IR-corrected design make it suitable for machine vision, industrial inspection, smart security, object recognition, and day-and-night imaging applications.
S12012502720 is 12mm Low distortion lens with IR Corrected, High-precision Low F-number S-Mount Lens (F2.0) , 5-megapixel resolution CCTV lens.
| IMAGE FORMAT | Max Φ9.1mm |
| FOCAL LENGTH | 12 mm |
| F.O.V. (1/2.5″) | 36°(D) |
| 27°(H) | |
| 22°(V) | |
| RESOLUTION | 5 MegaPixel |
| DISTORTION | <-4.2% |
| APERTURE | F2.0 |
| MOUNT | M12X0.5 |
| IRIS | Fixed |
| FOCUS | Manual |
| ZOOM | Fixed |
| T.T.L. | 23.15mm |
| STRUCTURE | 6G |
| IR | Corrected |
This M12 12mm 5MP IR corrected lens is designed for compact industrial cameras and imaging systems that require high-resolution image capture, controlled distortion, and stable optical performance across visible and near-infrared wavelengths. Supporting a 1/2.5″ sensor format with a 36° diagonal FOV, < -4.2% distortion, and 5MP resolution, it provides a balanced optical solution for machine vision, smart security, inspection, and intelligent imaging applications.
The F2.0 fixed aperture, manual focus, and M12x0.5 mount allow flexible integration into compact camera modules. Its IR-corrected optical design helps maintain focus consistency when switching between visible and near-infrared illumination, making it suitable for applications requiring reliable day-and-night imaging.
This 12mm M12 lens is designed for imaging applications where high resolution, controlled distortion, and IR-compatible optical performance are important. Its 36° diagonal FOV provides a more focused viewing area than short-focal-length M12 lenses, making it suitable for cameras positioned at moderate distances from the target.
The combination of 5MP resolution and < -4.2% distortion makes the lens useful for industrial inspection, machine vision, intelligent surveillance, object recognition, access control, and automated monitoring. The IR-corrected design is particularly valuable when the same camera must operate under visible illumination during the day and near-infrared illumination at night.
Designed for day-and-night machine vision and intelligent monitoring applications, this lens can be integrated into:
The maximum Φ9.1mm image circle provides useful optical coverage for compatible sensor configurations. For sensor compatibility and image-circle considerations, refer to the Sensor Guide.
For applications where the required working distance and target dimensions are known, the FOV Calculator can help estimate the required field of view. You can also use the Focal Length Calculator when comparing different focal lengths.
Q: What type of lens is this 12mm M12 lens?
A: It is a fixed focal length M12 lens designed for 1/2.5″ sensor applications, with 5MP resolution, low distortion, and IR-corrected optical performance.
Q: What is the field of view of this lens?
A: The lens provides a 36° diagonal FOV, 27° horizontal FOV, and 22° vertical FOV on the specified 1/2.5″ image format.
Q: What is the advantage of the IR-corrected design?
A: IR correction helps reduce focus shifts between visible and near-infrared wavelengths, allowing more consistent image quality when a camera operates under different illumination conditions.
Q: Is this lens suitable for 5MP machine vision cameras?
A: Yes. The lens is specified for 5MP resolution and is suitable for compact machine vision, inspection, recognition, and industrial imaging systems.
Q: How does the 12mm focal length affect the image?
A: The 12mm focal length provides a relatively focused field of view compared with shorter M12 lenses. This is useful when the camera needs to concentrate on a defined inspection or monitoring area.
Q: What is the distortion level of this lens?
A: The specified distortion is below -4.2%, helping reduce geometric deformation and supporting applications where accurate object representation is important.
Q: Does the lens have an adjustable iris?
A: No. It uses a fixed F2.0 aperture, providing a consistent optical configuration for the intended camera system.
Q: Can this M12 lens be customized for OEM applications?
A: TOWIN provides OEM/ODM optical solutions for industrial and imaging applications. For customized optical, mechanical, or mounting requirements, contact the TOWIN Lens team.
To select the appropriate focal length, sensor format, and optical configuration, see the Lens Selection Guide. For applications involving distortion-sensitive imaging, the Distortion Guide provides additional information about distortion and image geometry.
Explore the complete range of M12 Lenses for compact industrial and embedded camera systems, or browse TOWIN Lens Products for additional machine vision and industrial optics.
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| RESOLUTION | |
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