

2.5mm 4MP M12 wide-angle lens with 135° FOV and F1.4 large aperture for low-light security and compact vision systems.
CCL13025MP is a F1.4 low light M12 wide-angle CCTV lens. It is for 1/2.7″ OV2710, 1/3″ OV4689, 1/4″ AR0140. It is a 5 Megapixel HD 2.5mm M12 wide-angle CCTV lens with large aperture for IP security camera.
| IMAGE FORMAT | 1/3″ |
| FOCAL LENGTH | 2.5mm |
| F.O.V. | 135°(D) |
| 102°(H) | |
| 75° (V) | |
| RESOLUTION | 4 MP |
| APERTURE | F1.4 |
| MOUNT | M12X0.5 |
| IRIS | Fixed |
| FOCUS | Manual |
| ZOOM | Fixed |
| B.F.L. | 4.40mm |
| CONSTRUCTION | 6G |
This 2.5mm M12 wide-angle CCTV lens is designed for compact camera systems that need a very wide viewing angle together with strong light-gathering performance. Using a 1/3″ image format, the lens delivers 4MP resolution with a 135° diagonal F.O.V., 102° horizontal F.O.V., and 75° vertical F.O.V. The combination of a 2.5mm focal length and F1.4 aperture makes it particularly suitable for applications where a broad scene must be captured in limited or changing light conditions. Its M12x0.5 mount and 4.40mm B.F.L. support integration into compact board-camera assemblies, while the 6G optical construction provides a dedicated multi-element optical configuration. Designed for wide-angle low-light imaging applications, this lens is suitable for smart security cameras, indoor monitoring, robotics, embedded vision, and other compact imaging systems requiring extensive scene coverage.
Explore TOWIN’s M12 Lenses for additional compact optical solutions.
135° Ultra-Wide Coverage
The 135° diagonal F.O.V. allows the camera to capture a very broad scene from a compact installation position, reducing the need for multiple viewing angles in many monitoring applications.
F1.4 Large Aperture
The bright F1.4 aperture is one of the key advantages of this lens. It allows more light to reach the sensor, making the lens particularly useful for indoor environments, low-light conditions, and systems where maintaining image brightness is important.
4MP Resolution
The 4MP optical configuration provides detailed image information for surveillance, embedded vision, and intelligent monitoring applications.
102° Horizontal FOV
A 102° horizontal field of view provides extensive side-to-side coverage, making the lens especially suitable for cameras monitoring rooms, entrances, equipment areas, or other broad scenes.
Compact M12x0.5 Mount
The M12x0.5 interface is designed for small board cameras and embedded camera modules where optical size and mechanical integration are important.
Short 4.40mm B.F.L.
The short back focal length supports compact camera construction and provides flexibility when integrating the lens with small sensor assemblies.
6G Optical Construction
The 6G configuration provides a multi-element optical structure designed around the requirements of this wide-angle 4MP lens.
Low-Light Security Cameras
The F1.4 aperture makes this lens particularly attractive for security cameras that need to maintain useful image brightness in indoor areas, entrances, corridors, and other environments with limited illumination.
Explore TOWIN’s Low Light Sensitive Lenses for additional optical solutions focused on challenging lighting conditions.
Smart Security Devices
The combination of 135° diagonal coverage and a compact M12 configuration allows smart cameras to observe a broad surrounding area from a relatively small device.
For application-specific solutions, see Smart Security.
Indoor Monitoring
The 102° horizontal and 75° vertical FOV make the lens suitable for indoor monitoring systems that need broad coverage, such as room monitoring, retail spaces, offices, and entrances.
Robotics Vision
The wide viewing angle can provide robots with more environmental information for navigation, obstacle awareness, and general scene perception.
Explore Robotics Vision for additional robotics imaging solutions.
Embedded AI Cameras
The compact M12 mount combined with a wide FOV and F1.4 aperture makes this lens suitable for embedded AI cameras used for people detection, object recognition, and environmental monitoring.
Compact Wide-Area Cameras
The lens is well suited to camera designs where the optical system must remain compact while still providing extensive scene coverage.
Focal Length and Field of View
The 2.5mm focal length provides a 135° diagonal, 102° horizontal, and 75° vertical F.O.V. This configuration is designed for broad scene capture rather than narrow or telephoto imaging.
For calculating coverage with different camera configurations, use TOWIN’s FOV Calculator.
Large Aperture for Challenging Lighting
The F1.4 aperture is particularly valuable when the available illumination is limited. A larger aperture can help the camera receive more light, although final low-light performance also depends on sensor sensitivity, exposure settings, illumination, and image processing.
For more information about selecting optics for different applications, visit the Lens Selection Guide.
Sensor Compatibility
The lens is designed for a 1/3″ image format and supports 4MP resolution. The camera sensor should be matched with the lens image format to ensure the intended image area is properly covered.
See TOWIN’s Sensor Guide for more information about sensor and lens matching.
Wide-Angle Perspective
With a 135° diagonal FOV, this lens prioritizes scene coverage. As with other very wide-angle designs, the actual image perspective and distortion characteristics should be evaluated according to the requirements of the camera system.
If geometric accuracy is important, compare the lens requirements with TOWIN’s Low Distortion Lens options.
Mechanical Integration
The M12x0.5 mount and 4.40mm B.F.L. make the lens suitable for compact camera assemblies. During integration, the sensor position, mounting depth, housing clearance, and focus adjustment should be verified.
Focus Configuration
The lens uses manual focus with a fixed focal length. This allows the optical focus to be adjusted during camera assembly according to the intended working distance.
Q: What is the main advantage of this 2.5mm M12 wide-angle CCTV lens?
A: Its combination of a 135° diagonal FOV and bright F1.4 aperture makes it particularly suitable for compact cameras that need broad scene coverage while maintaining strong light-gathering capability.
Q: What sensor size is compatible with this lens?
A: The lens is designed for a 1/3″ image format and supports 4MP resolution. The camera sensor and lens image format should be matched during system design.
Q: Why is an F1.4 aperture useful for security cameras?
A: F1.4 allows a relatively large amount of light to reach the sensor, which can help maintain image brightness in low-light environments. Actual performance also depends on the camera sensor and illumination conditions.
Q: Is this lens suitable for indoor surveillance?
A: Yes. Its wide FOV can cover large indoor areas, while the F1.4 aperture makes it well suited to environments where illumination may be limited.
Q: Is this lens suitable for precision machine vision?
A: It can be used for general visual detection and environmental monitoring, but its very wide field of view is not the ideal configuration for precision dimensional measurement. A low-distortion industrial lens would generally be more appropriate for measurement applications.
Q: Can TOWIN customize this wide-angle M12 lens?
A: Yes. TOWIN supports OEM and ODM optical development for application-specific camera projects. Requirements such as sensor format, focal length, FOV, aperture, distortion, mechanical dimensions, and optical construction can be evaluated. Contact TOWIN for customization support.
Download Specs Sheet
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| IRIS | |
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| RESOLUTION | |
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