CCTV Lens – CS02811816M5

CS02811816M5 is 2.77mm Wide-angle CCTV 5-Megapixel lens 1/1.8″ CS mount 170°(D) Manual Iris and Focus F1.6 – 16 security surveillance lens.

CS-Mount 2.77mm 5MP Fisheye CCTV Lens

This 2.77mm CS-mount fisheye CCTV lens is designed for 1/1.8″ sensors such as the Sony IMX547, delivering an ultra-wide 170° diagonal field of view with 5MP resolution. Its F1.6–16 manual aperture and manual focus provide flexible optical control for panoramic surveillance, wide-area monitoring, and specialized imaging systems.

The combination of a 2.77mm focal length and 170° diagonal FOV is designed for applications where maximum scene coverage is more important than conventional rectilinear image geometry. For engineers matching sensor format and optical coverage, the Sensor Guide provides additional information for lens and sensor selection.

Product Core Highlights

• 170° Ultra-Wide FOV: Captures an exceptionally broad scene with a single camera.
• 2.77mm Fisheye Design: Provides panoramic coverage for wide-area imaging systems.
• 5MP Resolution: Supports detailed imaging on 1/1.8″ sensors such as the IMX547.
• F1.6–16 Manual Aperture: Allows optical control across different lighting conditions.
• Manual Focus & CS Mount: Provides flexible installation and optical adjustment for professional camera systems.

CS-Mount 2.77mm CCTV Lens Applications

Core Application Scenes

This CS-mount fisheye lens is designed for imaging systems that need to observe a very large area from a single camera position. With a 170° diagonal field of view, the 2.77mm optical design can significantly increase scene coverage compared with conventional fixed focal length lenses, making it suitable for panoramic and situational-awareness applications.

The lens is particularly useful for wide-area security monitoring, where minimizing blind spots is more important than maintaining conventional perspective geometry. Designers can integrate it into ceiling‑mounted security cameras, indoor panoramic monitoring systems, entrance‑area surveillance cameras, and other CCTV platforms that demand broad visual coverage.

The F1.6–16 manual aperture gives system designers additional control when the camera is deployed across different lighting conditions. The wide maximum aperture can support brighter imaging in low-light environments, while stopping the aperture down provides greater control under strong illumination.

The 0.1m minimum object distance also makes the lens suitable for relatively close-range monitoring, such as observing equipment, access points, counters, indoor spaces, or objects positioned close to the camera.

For systems where the priority is maximum coverage rather than conventional perspective, this lens can complement TOWIN’s broader CCTV and security lens solutions.

Compatible Device List

• Panoramic CCTV Cameras: Suitable for security cameras requiring extremely wide scene coverage from a single optical channel.
• Indoor Surveillance Systems: The 170° FOV can cover large indoor areas, entrances, corridors, and shared spaces.
• Ceiling-Mounted Security Cameras: The fisheye configuration is well suited to cameras positioned to observe an area from above.
• Wide-Area Monitoring Cameras: Suitable for retail, commercial, facility, and equipment monitoring where broad visual awareness is required.
• IMX547-Based Camera Modules: Designed around the 1/1.8″ image format and specified FOV for the Sony IMX547 sensor.
• Specialized Panoramic Imaging Systems: The CS mount allows integration with compatible professional camera bodies and optical assemblies.

When designing a panoramic security system, engineers can use the Lens Selection Guide to evaluate focal length, sensor size, field of view, and application requirements.

Designed for ultra-wide panoramic surveillance, wide-area security monitoring, and specialized fisheye imaging applications.

Frequently Asked Questions

Q: What is the field of view of this CS-mount fisheye lens?
A: When used with the specified IMX547 sensor, the lens provides a 170° diagonal, 131° horizontal, and 111° vertical field of view.

Q: Is this a fisheye lens?
A: Yes. Its 2.77mm focal length and 170° diagonal field of view are characteristic of an ultra-wide fisheye optical design intended for very broad scene coverage.

Q: What sensor size is this lens designed for?
A: The lens is designed for a 1/1.8″ image format and the specified FOV data is based on the Sony IMX547 sensor.

Q: Is this a fixed focal length lens or a zoom lens?
A: It is a fixed focal length lens with a 2.77mm focal length. The specification “Zoom: Fixed” indicates that the focal length cannot be optically adjusted like a conventional varifocal or zoom lens.

Q: What type of aperture does this CS-mount lens use?
A: It uses a manual F1.6–16 aperture, allowing the user to manually adjust the amount of light entering the camera and control imaging performance under different lighting conditions.

Q: Can the focus be adjusted manually?
A: Yes. The lens uses manual focus and has a minimum object distance of 0.1m, providing flexibility for close-range imaging applications.

Q: Is this lens suitable for CCTV applications?
A: Yes. Its ultra-wide 170° field of view and CS mount make it particularly suitable for panoramic CCTV, indoor security monitoring, and wide-area surveillance systems.

Q: Is this lens a low distortion lens?
A: No. This lens is designed as a fisheye optic for extremely wide scene coverage. No low-distortion specification is provided, so it should not be classified as a low distortion lens.

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