CCTV Lens – CCL1325M

CCL1325M is 1/3″ 25mm Low-light CCTV lens, F1.4 CS mount lens with Low F-number (Fast Lenses), VGA resolution, Low Light Sensitive Lens.

25mm F1.4 CS-Mount CCTV Lens

This 25mm CS-mount CCTV lens is designed for imaging systems that require a narrow field of view, precise target framing, and strong light-gathering performance. With an 11° horizontal field of view, F1.4 aperture, and manual iris and focus control, it provides a practical solution for long-distance monitoring, industrial inspection, machine vision, and specialized CCTV imaging.

The lens supports a 1/3″ image format and features a fixed 25mm focal length, making it suitable for applications where a consistent viewing angle and repeatable imaging geometry are required. For more options, explore TOWIN’s range of CS-Mount Lenses.

CS-Mount CCTV Lens Core Highlights

• 25mm Fixed Focal Length: Provides a narrow 11° horizontal FOV for targeted observation and controlled image framing.
• F1.4 Large Aperture: Allows strong light-gathering capability for applications operating under challenging or variable lighting conditions.
• CS-Mount Compatibility: Designed for cameras using the widely adopted CS-mount interface.
• Manual Optical Control: Manual iris and focus adjustment gives system integrators direct control over exposure and image sharpness.
• 0.3m M.O.D.: Supports relatively close target positioning while maintaining the benefits of a 25mm focal length.

CS-Mount CCTV Lens Applications

Core Application Scenes

The narrow 11° horizontal field of view makes this lens particularly useful when the imaging target occupies a relatively small portion of a larger scene. The 25mm focal length can help reduce unnecessary background information and concentrate the camera’s view on a defined inspection or monitoring area.

Typical applications include:

• Long-distance CCTV monitoring
• Industrial equipment observation
• Machine vision inspection of localized targets
• Factory process monitoring
• Entrance and access-point monitoring
• Object recognition at controlled distances
• Specialized surveillance systems
• Industrial camera systems requiring a narrow viewing angle

Designed for long-distance industrial monitoring applications where controlled framing and a relatively narrow field of view are more important than wide-area coverage.

For industrial inspection projects, this lens can be paired with TOWIN’s dedicated Machine Vision solutions to build a more targeted imaging system.

Compatible Devices

This CS-mount lens can be integrated with:

• 1/3″ industrial cameras
• CS-mount CCTV cameras
• Machine vision cameras
• Factory monitoring cameras
• Industrial inspection cameras
• Fixed-position surveillance cameras
• Embedded vision systems using CS-mount interfaces

When selecting a camera, ensure that the sensor format, CS-mount interface, and optical requirements are compatible with the complete imaging system.

For help matching the lens to a camera sensor, TOWIN’s Sensor Guide provides additional optical selection information.

Why Choose a 25mm F1.4 CS-Mount CCTV Lens?

A 25mm focal length provides a much narrower viewing angle than typical wide-angle CCTV lenses. This makes it useful when the camera needs to concentrate on a specific target rather than capture a large surrounding area.

The F1.4 aperture is another important advantage. A larger aperture can provide more light to the camera sensor, which is valuable in applications where illumination is limited or where maintaining a useful exposure is important.

For projects where the required field of view needs to be estimated before selecting a lens, the TOWIN FOV Calculator can help engineers evaluate suitable focal lengths.

Frequently Asked Questions

Q: What type of lens is this 25mm model?
A: It is a 25mm fixed focal length CS-mount lens designed for 1/3″ imaging systems.

Q: What is the horizontal field of view?
A: The horizontal field of view is 11°, providing a relatively narrow viewing angle suitable for targeted observation.

Q: What is the maximum aperture of this lens?
A: The maximum aperture is F1.4, providing strong light-gathering capability.

Q: Does this lens have an adjustable iris?
A: Yes. It uses a manual iris, allowing users or integrators to adjust the aperture according to the lighting conditions.

Q: Can the focus be adjusted manually?
A: Yes. The lens features manual focus adjustment for application-specific focusing.

Q: What camera mount does this lens use?
A: It uses a CS mount and is intended for compatible CS-mount cameras.

Q: What is the minimum object distance?
A: The specified M.O.D. is 0.3m.

Q: What applications are suitable for a 25mm narrow-FOV lens?
A: Typical applications include targeted CCTV monitoring, industrial observation, localized machine vision inspection, and other systems requiring a controlled viewing angle.

Related TOWIN Products & Resources

For additional CS-mount options, visit TOWIN’s CS-Mount Lens collection.

If your project requires other fixed focal length options, you can also review the Fixed Focal Megapixel Lens category.

For applications requiring continuous day/night imaging, explore TOWIN’s IR Corrected / Day-Night Lens range.

Engineers can also review the Lens Selection Guide when determining focal length, sensor compatibility, and field-of-view requirements.

For customized optical requirements, OEM/ODM development, or technical assistance, contact TOWIN.

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