CCTV Lens – CCL13358AMP

3.5–8mm Varifocal CS-mount CCTV lens with F1.4 aperture, DC auto iris and IR correction for flexible 1/3″ day-night surveillance.

3.5–8mm CS-Mount varifocal CCTV lens

This 3.5–8mm CS-Mount varifocal CCTV lens is designed for 1/3″ security cameras requiring flexible viewing coverage and reliable image quality. With a 79°–35° horizontal FOV, F1.4 aperture, DC auto iris, manual focus and manual zoom, it provides adaptable imaging for indoor and outdoor surveillance systems.

Its IR corrected optical design helps maintain consistent focus between visible and infrared imaging, making this CS-Mount CCTV lens suitable for day-and-night security cameras and surveillance applications where lighting conditions can change significantly.

Product Core Highlights

• Flexible 3.5–8mm focal range for adjustable surveillance coverage.
• 79°–35° horizontal FOV supports both wide-area and narrower viewing requirements.
• F1.4 aperture with DC auto iris helps maintain usable exposure under changing illumination.
• IR corrected optics support day-and-night surveillance with improved focus consistency.
• CS mount and manual zoom/focus provide compatibility with a broad range of professional CCTV camera platforms.

CS-Mount Varifocal CCTV Lens Applications

Core Application Scenes

This CS-Mount varifocal CCTV lens is designed for surveillance systems where a fixed field of view may not provide enough installation flexibility. Its 3.5–8mm focal range allows installers to adjust the viewing angle according to the actual monitoring distance and coverage requirements.

At the 3.5mm setting, the lens provides a relatively wide 79° horizontal FOV, making it suitable for monitoring entrances, retail spaces, corridors and other areas where broader scene coverage is important. Moving toward 8mm narrows the viewing angle to 35°, helping concentrate the image on specific areas such as access points, counters or controlled zones.

The F1.4 aperture and DC auto iris are particularly useful in surveillance environments with changing illumination. The lens can adapt to different brightness conditions while its IR corrected optical design helps maintain focus consistency when cameras switch between visible-light and infrared illumination.

For broader information about surveillance optics and system applications, explore TOWIN’s Smart Security solutions.

Compatible Device List

• 1/3″ CCTV Cameras: Designed for security cameras using 1/3″ image sensors and CS-mount interfaces.
• Indoor Surveillance Cameras: Suitable for retail stores, offices, corridors, entrances and commercial facilities where adjustable coverage is valuable.
• Day & Night Security Cameras: The IR corrected design supports applications using infrared illumination for low-light or nighttime monitoring.
• Access Control Cameras: The variable focal length allows installers to fine-tune framing around doors, gates and controlled access areas.
• Commercial Security Systems: Suitable for CCTV installations where different camera-to-subject distances require field-of-view adjustment.
• Existing CS-Mount Camera Platforms: The CS interface enables integration with compatible professional surveillance camera bodies.

Designed for flexible day-and-night CCTV surveillance and adjustable security camera coverage.

Frequently Asked Questions

Q: What type of camera is this 3.5–8mm lens designed for?

A: This lens is designed primarily for 1/3″ CS-mount CCTV and security cameras. Its variable focal length makes it suitable for surveillance installations where the required viewing area may need to be adjusted after installation.

Q: What is the FOV of this CS-Mount CCTV lens?

A: The horizontal field of view ranges from 79° at 3.5mm to 35° at 8mm. The wider setting provides broader scene coverage, while the longer focal length provides a narrower view of specific areas.

Q: Is this lens suitable for day-and-night surveillance?

A: Yes. The lens features an IR corrected optical design that helps maintain focus consistency when a compatible camera changes between visible-light and infrared imaging.

Q: Can the focal length be adjusted after installation?

A: Yes. This is a manual zoom lens with a 3.5–8mm focal range. The installer can manually adjust the focal length to achieve the required surveillance framing.

Q: What is the minimum object distance of this lens?

A: The specified M.O.D. is 0.2m, allowing the lens to focus on subjects from approximately 20cm away under the specified optical configuration.

Q: Is this lens suitable for indoor security cameras?

A: Yes. Its adjustable focal range and wide-to-medium viewing coverage make it suitable for indoor surveillance applications such as retail stores, offices, corridors, entrances and access-control areas.

Q: Can TOWIN provide customized CCTV lens solutions?

A: Yes. TOWIN can support customized optical solutions for different camera platforms and project requirements. For application-specific requirements, you can contact TOWIN to discuss your camera, sensor and mechanical configuration.

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