CCTV Lens – D14281212718A3

D14281212718A3 is 3-Megapixel resolution CCTV lens 1/2.7″ 2.8-12mm manual zoom and focus lens, F1.8 Low F-number M14 mount lens, DC Auto iris.

2.8-12mm M14 Manual Zoom Wide Angle CCTV Lens

This 2.8-12mm M14 Manual Zoom CCTV Lens is designed for 1/2.7″ sensors and provides a flexible 140° to 40° diagonal field of view. With F1.8 aperture, DC auto iris, manual focus, and manual zoom, it delivers adaptable imaging for security cameras and wide-area surveillance systems.

Its 2.8-12mm focal length range allows installers to adjust coverage from expansive monitoring scenes to more focused viewing without changing the lens. The lens is particularly suitable for compact CCTV systems requiring flexible framing and reliable exposure control.

M14 Zoom CCTV Lens Core Highlights at a Glance

• 2.8-12mm manual zoom range for flexible surveillance coverage.
• Up to 140° diagonal FOV for wide-area monitoring at the 2.8mm setting.
• F1.8 maximum aperture supports bright and efficient image capture.
• DC auto iris helps maintain exposure under changing lighting conditions.
• M14 mount with 0.3m M.O.D. for compact camera integration and flexible installation.

M14 Zoom CCTV Lens Applications

Core Application Scenes

This M14 wide angle zoom lens is designed for surveillance systems where one fixed focal length is not sufficient for different monitoring distances. At 2.8mm, its 140° diagonal FOV provides broad scene coverage for entrances, retail areas, indoor corridors, reception zones, and other locations where a large viewing area is required. By manually adjusting the focal length toward 12mm, installers can obtain a narrower field of view for subjects positioned farther from the camera.

The 2.8-12mm range also makes this lens useful for CCTV systems that require field-of-view adjustment during installation. Instead of selecting different fixed focal length lenses for different camera positions, installers can configure the zoom range according to the actual surveillance environment.

For projects involving different camera and lens combinations, the CCTV and camera lens selection resources can help engineers evaluate focal length, sensor format, and coverage requirements before deployment.

Compatible Device List

• 1/2.7″ CCTV Cameras: Designed around the 1/2.7″ image format for compact surveillance camera modules.
• Security Camera Systems: Suitable for indoor CCTV cameras used in retail stores, offices, commercial buildings, corridors, and entrance monitoring.
• Wide-Area Surveillance Cameras: The 2.8mm setting provides a broad viewing angle for scenes where large-area coverage is more important than long-distance magnification.
• Adjustable Surveillance Installations: The manual zoom function allows installers to fine-tune framing after the camera has been positioned.
• DC Auto Iris Camera Modules: The DC auto iris mechanism supports automatic aperture adjustment as ambient lighting changes.
• Custom Camera Integration: The M14 mechanical interface can be considered for specialized compact camera assemblies where the required mechanical structure matches the lens specification.

For broader security-system integration, this lens can be evaluated alongside Towin’s Smart Security solutions, particularly for camera systems that require adaptable viewing coverage.

Practical Imaging Value

The main advantage of this lens is its combination of wide-angle coverage and manual focal-length adjustment. A surveillance installer can begin with the wider 2.8mm setting to establish overall scene coverage and then adjust toward 12mm when a more concentrated view is required.

The F1.8 aperture is also useful for CCTV environments where available light varies throughout the day. Combined with DC auto iris control, the lens is designed to provide a practical exposure-control solution for continuously operating surveillance cameras.

For applications where focal length needs to be selected according to a specific sensor and target area, Towin’s FOV Calculator can be used to estimate image coverage before choosing the final configuration.

Designed for flexible CCTV surveillance, wide-area security monitoring, and adjustable camera coverage applications.

Frequently Asked Questions

Q: What type of lens is this?
A: This is a 2.8-12mm M14 manual zoom wide angle CCTV lens designed for 1/2.7″ image sensors.

Q: Is this lens a fixed focal length lens?
A: No. The lens provides a 2.8-12mm focal length range and uses manual zoom, allowing the field of view to be adjusted according to the surveillance scene.

Q: What is the maximum field of view of this lens?
A: The maximum diagonal FOV is 140° at the 2.8mm focal length. The horizontal FOV is up to 100°, while the vertical FOV reaches 60°.

Q: What camera sensor is this lens designed for?
A: The lens is specified for a 1/2.7″ image format and supports up to 3MP resolution.

Q: Does this lens have an auto iris?
A: Yes. It uses a DC auto iris mechanism to automatically adjust the aperture according to changes in lighting conditions.

Q: What is the difference between the 2.8mm and 12mm settings?
A: The 2.8mm setting provides a much wider field of view for broad scene coverage, while the 12mm setting produces a narrower view that is more suitable for concentrating on subjects at greater distances.

Q: Is this lens suitable for indoor CCTV applications?
A: Yes. Its wide-angle 2.8mm setting, F1.8 aperture, manual zoom, and DC auto iris make it suitable for various indoor surveillance environments such as entrances, corridors, retail spaces, and commercial facilities.

Q: Can the lens be customized for a specific camera project?
A: Towin can evaluate lens requirements based on the camera sensor, focal length, field of view, mechanical interface, and application environment. For project-specific requirements, customers can contact the Towin optical engineering team.

Related Products & Technical Resources

For customers comparing this lens with other surveillance optics, Towin’s Products section provides access to different industrial and security lens configurations. The C-Mount Lenses and CS-Mount Lenses categories are useful alternatives when a project requires a different mechanical interface.

Engineers evaluating camera compatibility can also refer to the Sensor Guide and Lens Basics for information about sensor format, focal length, field of view, and other optical parameters.

For projects requiring a specific focal length based on object distance and target coverage, the Focal Length Calculator provides another useful reference during lens selection.

Online contact