Wide Angle Lens – CCL1270410MPF

CCL1270410MPF is 4mm 2-Megapixel Wide-angle lens with IR cut filter, 1/2.7″ Large aperture CCTV lens, M16XP0.5 mount lens, fixed iris F1.0.

For additional special-mount optical configurations, engineers can review Towin’s Other Mount Lenses category.

4mm M16 F1.0 Wide Angle Lens with IR Cut Filter

This 4mm M16 wide angle lens delivers up to a 92° horizontal field of view on a 1/2.7″ sensor, combined with an ultra-fast F1.0 aperture and integrated IR cut filter. Its compact M16x0.5 mounting interface and 0.2m minimum object distance make it suitable for wide-area CCTV and embedded security camera systems requiring broad scene coverage.

M16 F1.0 Wide Angle Lens Core Highlights

• 92° horizontal FOV on 1/2.7″ provides broad-area scene coverage.
• 110° diagonal FOV expands overall image coverage for wide-view surveillance.
• F1.0 aperture provides a fast optical configuration for demanding lighting conditions.
• Integrated IR cut filter supports color imaging by filtering infrared wavelengths in visible-light operation.
• M16x0.5 mount with holder construction enables integration into compatible compact camera assemblies.

M16 F1.0 Wide Angle Lens Applications

Core Application Scenes

This 4mm M16 wide angle lens is designed for camera systems that need to monitor a broad area from a relatively short installation distance. On a 1/2.7″ sensor, its 92° horizontal and 110° diagonal FOV allow a single camera to capture a substantial portion of an indoor or near-field scene.

The lens is particularly suitable for indoor CCTV, entrance monitoring, retail surveillance, compact security cameras, and embedded wide-angle camera modules. The 4mm focal length provides broad coverage, while the 0.2m minimum object distance supports relatively close installation positions.

A major feature of this model is its F1.0 aperture. The large aperture provides high light-gathering capability, which can be useful for indoor surveillance environments where illumination may vary between well-lit and darker areas.

The optical assembly also includes an IR cut filter. An IR cut filter is designed to block near-infrared wavelengths during normal visible-light imaging, helping a color camera maintain more natural color reproduction. It should be distinguished from an IR-corrected lens, which is an optical design characteristic related to focus behavior across visible and near-infrared wavelengths.

The lens is supplied as a Lens + Holder + IR Cut Filter construction, providing an integrated optical assembly for compatible camera designs.

Compatible Device List

• 1/2.7″ 2MP CCTV cameras: Designed for compatible surveillance camera modules using 1/2.7″ image sensors.
• 1/2.8″ camera modules: The specified 1/2.8″ FOV data allows engineers to evaluate the lens with this sensor format as well.
• Indoor wide-angle security cameras: Suitable for broad coverage in rooms, offices, stores, reception areas, and other indoor environments.
• Entrance monitoring cameras: The 92° horizontal FOV can capture a broad region around doors and access points.
• Retail surveillance cameras: Suitable for monitoring larger areas where broad scene awareness is required.
• Embedded security camera modules: The M16x0.5 mounting interface and integrated holder support compatible compact camera assemblies.

For security-oriented deployments, the lens can be considered as part of Towin’s Smart Security solutions.

Wide-Angle FOV for Broad Scene Coverage

The lens provides different FOV values depending on the sensor format:

• 1/2.7″: 110° diagonal / 92° horizontal / 49° vertical
• 1/2.8″: 105° diagonal / 88.5° horizontal / 47° vertical

This demonstrates why sensor format should be considered when estimating actual scene coverage. Although the focal length remains 4mm, the resulting field of view changes slightly with sensor dimensions.

The 92° horizontal FOV on a 1/2.7″ sensor makes this model substantially wider than conventional focused CCTV lenses. It is therefore suited to applications where broad scene awareness is more important than concentrating the image on a distant target.

Engineers can use Towin’s FOV Calculator to estimate coverage at different working distances.

F1.0 Aperture for Low-Light Conditions

The F1.0 aperture is one of the key optical characteristics of this model. A larger aperture allows more light to reach the image sensor, which can be useful in indoor environments where illumination is limited or changes throughout the day.

This can be particularly relevant for security cameras installed in corridors, entrances, stores, parking areas, and other locations where artificial lighting may not remain constant.

Actual low-light performance depends on the complete imaging system, including sensor sensitivity, exposure settings, gain, image processing, and illumination conditions.

IR Cut Filter & Color Imaging

The integrated IR cut filter is designed to reduce unwanted near-infrared light reaching the image sensor during visible-light imaging. This is particularly relevant to color CCTV cameras, where excessive infrared response can affect color reproduction.

Because this product is specified with an IR cut filter rather than IR-corrected optics, it should not automatically be classified as an IR Corrected Lens.

For systems requiring deliberate visible/NIR focus matching, engineers should confirm the optical specification separately before selecting the lens.

Optical Selection Considerations

The 4mm focal length, broad FOV, F1.0 aperture, and 0.2m M.O.D. make this lens suitable for relatively close, wide-area monitoring. It is less appropriate for applications where the camera must isolate a distant or very small target.

The 5.72mm B.F.L. and 31.96mm T.T.L. should also be considered when integrating the lens into a camera housing. Mechanical clearance and sensor positioning should be verified during system design.

For selecting an appropriate focal length according to sensor size, working distance, and target dimensions, engineers can refer to Towin’s Lens Selection Guide.

Designed for wide-area CCTV, indoor security, entrance monitoring, retail surveillance, and compact camera modules requiring F1.0 brightness and an integrated IR cut filter.

Frequently Asked Questions

Q: What type of lens is this 4mm M16 lens?
A: It is a 4mm fixed focal wide-angle lens designed for 1/2.7″ and compatible 1/2.8″ camera systems, with an F1.0 aperture and integrated IR cut filter.

Q: What is the field of view on a 1/2.7″ sensor?
A: The specified FOV is 110° diagonal, 92° horizontal, and 49° vertical on a 1/2.7″ sensor.

Q: What is the field of view on a 1/2.8″ sensor?
A: The specified FOV is 105° diagonal, 88.5° horizontal, and 47° vertical on a 1/2.8″ sensor.

Q: What is the advantage of the F1.0 aperture?
A: F1.0 provides a large optical aperture and high light-gathering capability, which can be advantageous for CCTV cameras operating under limited or variable illumination.

Q: Is this lens IR corrected?
A: IR correction is not specified for this model. The supplied specification refers to an IR cut filter, which is a different optical feature from IR correction.

Q: What camera sensors are compatible with this lens?
A: The lens is specified for 1/2.7″ sensors and also provides FOV data for 1/2.8″ sensors, allowing engineers to evaluate both configurations.

Q: What is the minimum object distance?
A: The specified M.O.D. is 0.2m, making the lens suitable for relatively close-range wide-area surveillance.

Q: What is the mounting interface?
A: The lens features an M16x0.5 mount and comes with a holder plus integrated IR cut filter.

Q: Is this lens suitable for low-distortion imaging?
A: No low-distortion value is provided in the supplied specifications. Marketers therefore cannot promote it as a Low Distortion Lens unless extra optical test data proves this attribute.

Online contact