CCTV Lens – CCL12702811AMP

CCL12702811AMP is 3-Megapixel IR corrected CCTV lens, 1/2.7″ 2.8 – 11mm manual focus and zoom lens, F1.4 CS-mount lens, DC Auto iris, and 0.3m minimum object distance.

1/2.7″ 3MP 2.8–11mm IR Corrected CS-Mount CCTV Lens

This 1/2.7″ 3MP 2.8–11mm CS-mount CCTV lens is designed for CCTV and security camera systems requiring flexible field-of-view adjustment, wide-angle coverage, and IR-corrected optical performance. With a 106°–29° horizontal FOV, F1.4 aperture, auto iris, and manual focus and zoom, it provides practical optical flexibility for surveillance systems operating across different scene sizes and lighting conditions.

IR Corrected CS-Mount CCTV Lens Highlights at a Glance

• 2.8–11mm variable focal length provides flexible scene framing for different surveillance distances
• 106° horizontal FOV at 2.8mm provides broad-area coverage for wide-angle monitoring
• F1.4 aperture provides strong light-gathering capability for changing illumination conditions
• Auto iris helps regulate the amount of light reaching the sensor as scene brightness changes
• IR-corrected optical design helps reduce focus variation between visible and near-infrared wavelengths

IR Corrected CS-Mount CCTV Lens Applications

Core Application Scenes

The 2.8–11mm focal-length range allows installers to adjust the viewing angle according to the size and distance of the monitored area. At the 2.8mm wide end, the lens provides a 106° horizontal FOV, making it suitable for broad-area monitoring. Moving toward 11mm narrows the horizontal FOV to 29°, allowing a more concentrated view of subjects farther from the camera.

The F1.4 aperture and auto iris combination is suitable for surveillance environments where illumination can change during operation. The auto iris can adjust the effective aperture according to the available light, while the F1.4 specification provides a relatively large maximum aperture.

The IR-corrected optical design is particularly useful for day/night security cameras using near-infrared illumination. It is intended to reduce wavelength-related focus differences between visible and IR light, helping maintain more consistent image focus when the illumination spectrum changes.

With a CS mount, this lens is compatible with camera systems designed around the widely used CS-mount interface. Its manual zoom and manual focus allow the optical configuration to be set during installation according to the required monitoring scene.

Compatible Devices

• 1/2.7″ CCTV camera modules
• 3MP security cameras
• CS-mount surveillance cameras
• Day/night CCTV cameras
• IR-assisted security camera systems
• Wide-area monitoring cameras
• Indoor security camera systems
• Fixed-position surveillance cameras requiring adjustable focal length

Designed for CCTV, security surveillance, day/night monitoring, and wide-area imaging applications requiring CS-mount compatibility, adjustable focal length, and IR-corrected optical performance.

For more CS-mount options, explore TOWIN’s CS-Mount Lenses, including the Fixed Focal Megapixel Lens range and other CS-mount configurations.

Frequently Asked Questions

Q1: Is this lens a fixed focal or zoom lens?
A: It is a manual zoom lens with a variable focal-length range of 2.8–11mm.

Q2: What is the horizontal field of view?
A: The horizontal FOV ranges from 106° at 2.8mm to 29° at 11mm. This allows the lens to switch between broad-area coverage and narrower scene framing.

Q3: Is this a fisheye lens?
A: No. Although the lens provides a wide 106° horizontal FOV at 2.8mm, the supplied specifications do not indicate a fisheye optical design. It is better classified as a wide-angle zoom lens.

Q4: What camera sensor format is supported?
A: The lens is designed for a 1/2.7″ image format and supports 3MP resolution.

Q5: What is the benefit of the F1.4 aperture?
A: F1.4 provides a relatively large maximum aperture, allowing more light to reach the sensor and making the lens suitable for camera systems operating under varying illumination.

Q6: What does IR Corrected mean?
A: IR correction is designed to reduce focus differences between visible and near-infrared wavelengths. This is useful in surveillance systems that use IR illumination for night imaging.

Q7: Does the lens have automatic focus and zoom?
A: No. Both focus and zoom are manual. The iris is automatic.

Q8: What mount does this lens use?
A: The lens uses a CS mount, making it suitable for camera systems designed for the CS-mount interface.

Related Optical Resources

Choosing the correct CCTV lens requires matching the sensor format, focal length, field of view, and camera mounting interface. TOWIN’s Lens Selection Guide provides guidance on these key factors, while the Sensor Guide explains sensor and image-format compatibility.

For field-of-view planning, use the FOV Calculator to evaluate the relationship between focal length, sensor size, and viewing angle; For CCTV and surveillance applications, see the Smart Security Solution.

For customized lens requirements or help selecting the appropriate CS-mount configuration, contact TOWIN through the Contact page.

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