

1/3″ 4mm M12 wide angle CCTV lens with F1.4 aperture, 70° H.F.O.V., M12x0.5 mount, fixed iris and compact 14g design for Day & Night CCTV.
CCL130414MP is 4mm Megapixel wide-angle CCTV lens, day & night capable, F1.4 Low F-number M12/S-mount lens, 1/3″ low light sensitive lens.
| IMAGE FORMAT | 1/3″ |
| FOCAL LENGTH | 4mm |
| H F.O.V. | 70° |
| RESOLUTION | Megapixel |
| APERTURE | 1.4 |
| MOUNT | M12x0.5 |
| IRIS | Fixed |
| M.O.D. | 0.3m |
| DIMENSION | Φ21×29.2mm |
| B.F.L. | 7.80mm |
| WEIGHT | 14g |
| DAY & NIGHT | Yes |
For engineers comparing compact M12 optical configurations, Towin’s M12 Lenses category provides additional focal-length and field-of-view options.
This 1/3″ 4mm M12 F1.4 wide angle CCTV lens provides a 70° horizontal field of view in a compact 14g optical package. With an M12x0.5 mount, fixed iris, and Day & Night capability, it is designed for compact CCTV and embedded camera systems requiring broad scene coverage without a large optical assembly.
This 4mm M12 wide angle lens is designed for compact surveillance cameras that need to cover a relatively broad area without using an ultra-wide or fisheye optical configuration. Its 70° horizontal field of view makes it suitable for indoor monitoring environments such as offices, retail areas, corridors, entrances, reception zones, and small commercial spaces.
The 4mm focal length provides a practical balance between scene coverage and target visibility. It can be used when the camera is installed relatively close to the monitored area and needs to capture several subjects or a wider portion of the environment within one image.
The F1.4 aperture is particularly useful for surveillance systems operating under changing illumination. Compared with slower aperture configurations, F1.4 provides greater light-gathering capability, which can help support image capture when ambient light decreases.
Its Day & Night capability makes this lens suitable for security cameras that operate throughout the day and into nighttime conditions. However, because the supplied specification does not explicitly identify the lens as IR Corrected, applications requiring verified visible/NIR focus matching should be confirmed with Towin before final selection.
For engineers selecting a lens based on sensor size, working distance, and desired scene coverage, the Lens Selection Guide provides a useful starting point.
For security camera applications requiring broad local-area coverage, this lens can be evaluated as part of Towin’s Smart Security solutions.
The 70° horizontal FOV is the key optical characteristic of this lens. It provides broader coverage than narrow-angle M12 fixed focal lenses while remaining distinct from extreme fisheye configurations.
The F1.4 aperture makes the lens particularly relevant when illumination is an important consideration. However, actual low-light performance depends on the complete camera system, including sensor sensitivity, exposure settings, illumination, and image processing.
The fixed 4mm focal length also means the field of view cannot be changed after installation through optical zoom. Engineers should therefore select the focal length according to the required working distance and target coverage.
The FOV Calculator can be used to estimate the expected scene coverage, while Towin’s Focal Length Calculator can assist with focal-length selection for a defined working distance.
When checking whether the 1/3″ sensor and lens configuration are appropriate for a camera design, engineers can also refer to the Sensor Guide.
Designed for indoor wide-angle CCTV, entrance monitoring, compact Day & Night cameras, and embedded security imaging systems.
Q: What type of lens is this 4mm M12 lens?
A: It is a 4mm M12 fixed focal wide angle lens designed for 1/3″ image sensors. It features a 70° horizontal field of view, F1.4 aperture, and Day & Night capability.
Q: What is the horizontal field of view?
A: The lens provides a 70° horizontal field of view, giving the camera broad coverage for indoor surveillance and other compact security applications.
Q: Is this lens a fisheye lens?
A: No. The specified 70° horizontal FOV supports a wide-angle classification, but the supplied specifications do not indicate a fisheye optical design.
Q: Is this a fixed focal lens or a zoom lens?
A: It is a fixed focal lens with a 4mm focal length. The optical field of view remains fixed after installation.
Q: What is the benefit of the F1.4 aperture?
A: F1.4 aperture delivers high light-gathering performance, suited for indoor surveillance and scenes with variable or low illumination.
Q: Is this lens IR corrected?
A: IR correction is not listed in the parameters. The lens supports Day & Night use; separate validation of IR-corrected performance is needed if near-infrared focus matching is required.
Q: What sensor size is this lens designed for?
A: The specified image format is 1/3″, so it is intended for compatible 1/3″ image sensors.
Q: What are the dimensions and weight of the lens?
A: The lens measures approximately Φ21 × 29.2mm and weighs about 14g, making it suitable for compact and lightweight camera modules.
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