

The 2.6mm 5MP M12 fisheye lens provides 177° diagonal FOV, 134° horizontal coverage, and 5MP resolution for panoramic and wide-area imaging.
S02612513424F is 1/2.5″ 2.6mm High-Quality fisheye lens, M12 mount 5-megapixel resolution CCTV lens, F2.4 aperture wide-angle surveillance lens.
| IMAGE SIZE | 1/2.5″ |
| FOCAL LENGTH | 2.6mm |
| FOV | 177°(D=7.12) |
| 134°(H=5.70) | |
| 98°(V=4.26) | |
| RESOLUTION | 5MegaPixel |
| TV DISTORTION | <-29% |
| APERTURE | F2.4 |
| MOUNT | M12X0.5 |
| IRIS | Fixed |
| FOCUS | Manual |
| ZOOM | Fixed |
| T.T.L. | 17.93mm |
| CONSTRUCTION | 6G+IRF |
This 2.6mm 5MP M12 ultra-wide fisheye lens is designed for compact camera systems that require exceptionally broad scene coverage from a single optical module. With a 177° diagonal FOV, 134° horizontal FOV, F2.4 aperture, and M12×0.5 mount, it is well suited for panoramic monitoring, compact security cameras, embedded vision, and wide-area imaging applications.
With a 177° diagonal field of view and 134° horizontal coverage, this lens is particularly suitable for camera systems where maximizing visible scene area is a primary requirement. Before selecting the lens, engineers can use the FOV Calculator to evaluate expected coverage based on sensor format, focal length, and installation distance.
This 2.6mm M12 fisheye lens is designed for applications where a conventional wide-angle lens cannot provide sufficient coverage. Its 177° diagonal FOV enables a single compact camera to observe an exceptionally large surrounding area, making it valuable for panoramic monitoring and wide-area situational awareness.
For overhead indoor surveillance, the lens can provide broad coverage of rooms, retail areas, entrances, corridors, and other spaces from a strategically positioned camera. The 134° horizontal FOV is particularly useful when the objective is to maximize lateral coverage while keeping the camera installation compact.
The lens can also be considered for compact panoramic and smart-home camera systems, where a single embedded camera needs to observe a large portion of its surroundings. Its M12×0.5 interface makes it suitable for small camera modules, while the fixed 2.6mm focal length provides a predictable optical configuration without the complexity of variable zoom.
For applications involving robotics or autonomous devices, the extremely wide viewing angle can provide broad environmental awareness around a compact vision module. However, because the optical design prioritizes very wide coverage, its specified distortion should be considered when applications require precise geometric measurement.
Designed for ultra-wide panoramic surveillance, smart camera, and broad-area embedded imaging applications.
For more compact optical configurations, explore the M12 Lenses product range. Engineers comparing different focal lengths, sensor formats, and viewing angles can also refer to the Lens Selection Guide.
For applications where geometric distortion is an important consideration, the Distortion Guide provides additional information about distortion in wide-angle optical systems.
For customized optical specifications, mechanical dimensions, or OEM/ODM camera projects, contact TOWIN to discuss your requirements.
Q: What type of lens is this 2.6mm M12 lens?
A: It is a fixed focal length M12 ultra-wide-angle lens with fisheye-level field of view, providing a 177° diagonal FOV when used with the specified 1/2.5″ image format.
Q: What is the field of view of this 5MP M12 lens?
A: The lens provides a 177° diagonal FOV, 134° horizontal FOV, and 98° vertical FOV.
Q: What sensor size is this lens designed for?
A: The specified image size is 1/2.5″, with a resolution rating of 5 megapixels.
Q: Is this a fisheye lens?
A: Its 177° diagonal field of view places it firmly in the ultra-wide and fisheye range. The lens is therefore well suited to applications requiring extremely broad scene coverage.
Q: Is this a low distortion lens?
A: No. The specified TV distortion is less than -29%, which reflects the extremely wide optical design. It should not be marketed as a low distortion lens.
Q: What does the IRF specification mean?
A: The construction is specified as 6G + IRF, indicating an optical design incorporating an IR filter component. This should not be interpreted as confirmation of IR-corrected optical performance.
Q: Does this lens have optical zoom?
A: No. It uses a fixed 2.6mm focal length and fixed zoom configuration, making it suitable for fixed-view imaging systems.
Q: What applications are suitable for a 177° field of view?
A: The lens is suitable for panoramic surveillance, overhead indoor monitoring, smart home cameras, retail observation, embedded IoT vision, robotic environmental awareness, and other wide-area imaging applications.
When selecting an ultra-wide-angle or fisheye lens, engineers should evaluate field of view together with sensor size, distortion, focal length, aperture, and camera installation position. The Lens Basics section provides additional information about fundamental optical parameters and their influence on imaging performance.
For applications requiring extensive scene coverage, the FOV Calculator can help estimate the relationship between focal length, sensor format, working distance, and field of view.
TOWIN provides a range of compact M12 Lenses for embedded imaging applications. For projects requiring customized optical performance, mechanical integration, or OEM/ODM development, contact TOWIN for application-specific support.
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