Zoom Lens – CCL13358MMP

CCL13358MMP is 1/3″ 3.5-8mm manual zoom lens, F1.4 CS mount lens with Low F-number (Fast Lenses), high resolution 1.3-Megapixel CCTV lens IR corrected.

3.5-8mm CS-Mount Manual Zoom IR Corrected Lens

This 3.5-8mm CS-mount manual zoom lens is designed for CCTV and security camera systems that require flexible focal length adjustment and consistent imaging across changing lighting conditions. With a 3.5-8mm focal range, 81° to 37° horizontal FOV, F1.4 aperture, 1.3MP resolution, and IR correction, it provides a versatile optical solution for adjustable surveillance coverage.

CS-Mount Zoom Lens Highlights at a Glance

• 3.5-8mm manual zoom range provides flexible scene framing without replacing the lens.
• 81° to 37° horizontal FOV supports both wider-area monitoring and narrower scene coverage.
• F1.4 maximum aperture supports higher light transmission for challenging surveillance environments.
• IR corrected optical design helps maintain focus consistency across visible and near-infrared imaging.
• CS mount provides compatibility with a broad range of CS-mount CCTV camera systems.
• 0.2m M.O.D. supports relatively close-range surveillance applications.

CS-Mount Zoom Lens Applications

Core Application Scenes

This CS-mount manual zoom lens is designed for surveillance systems where the required viewing area may change after installation. Its 3.5-8mm focal range allows installers and system integrators to adjust the image composition manually according to the camera position and monitoring target.

At the 3.5mm end, the lens provides an 81° horizontal FOV, making it suitable for wider-area observation such as entrances, indoor rooms, corridors, retail areas, and small outdoor zones. Moving toward 8mm narrows the horizontal FOV to 37°, allowing the camera to concentrate more closely on a specific area or target.

The F1.4 aperture is useful in surveillance environments where available light varies throughout the day. Combined with the IR corrected design, the lens is suitable for camera systems that operate across visible and near-infrared lighting conditions, including day/night CCTV configurations.

Typical applications include:

• Indoor CCTV surveillance
• Retail security cameras
• Building entrance monitoring
• Corridor and passageway surveillance
• Small-area outdoor monitoring
• Commercial security systems
• Access control camera systems
• Day/night security cameras
• Adjustable-view monitoring installations

Designed for CCTV and security camera applications requiring manual framing flexibility, wide-to-narrow scene coverage, and IR-corrected imaging.

For a broader selection of surveillance optics, explore Towin’s CS-Mount Lenses and related Vari-Focal CCTV Lens category.

Compatible Device List

• CS-Mount CCTV Cameras: Directly designed for camera systems using a CS-mount interface.
• Box Cameras: Suitable for CS-mount box cameras requiring manually adjustable framing.
• Day/Night Security Cameras: IR correction supports applications using visible and near-infrared illumination.
• Commercial Surveillance Cameras: The 3.5-8mm range allows installers to adapt the viewing angle to different monitoring locations.
• Indoor Security Systems: The wide-angle 3.5mm setting can cover entrances, rooms, and corridors.
• Close-Range Monitoring: With a 0.2m M.O.D., the lens can support applications where the camera must observe relatively nearby subjects.
• OEM Security Camera Assemblies: The CS mount and manual optical controls provide a practical configuration for dedicated CCTV equipment.

For systems that require different iris control or surveillance configurations, Towin also provides DC Auto Iris Security Lenses and Manual Iris HD CCTV Lenses.

Flexible Manual Zoom for CCTV Installation

The main advantage of this lens is its 3.5-8mm manual zoom range.

Unlike a fixed focal CCTV lens, a manual zoom lens allows the installer to change the focal length after mounting the camera. This can be useful when the exact camera-to-target distance or required framing is difficult to determine before installation.

The 3.5mm setting provides an 81° horizontal field of view for broader observation, while the 8mm setting reduces the horizontal FOV to 37° for more concentrated viewing.

This makes the lens particularly practical for security projects where different camera positions may require different levels of scene coverage.

When selecting the appropriate focal range, factors such as sensor format, camera-to-target distance, desired FOV, and target size should be considered together. Towin’s Lens Selection Guide provides additional guidance on these optical parameters.

IR Corrected Optical Design

This lens is specifically specified as IR Corrected, which is an important characteristic for surveillance cameras operating with near-infrared illumination.

In day/night CCTV systems, switching between visible-light and near-infrared imaging can introduce focus changes if the optical system is not designed to compensate for wavelength-dependent focus shifts. An IR corrected lens is designed to improve focus consistency across the relevant visible and near-infrared wavelengths.

This makes the lens suitable for security cameras that use IR illumination during low-light or nighttime operation.

For additional information about optical characteristics and lens technologies, see Towin’s Optical Design resources.

F1.4 Aperture for Surveillance Lighting Conditions

The lens features a maximum F1.4 aperture, providing a relatively bright optical configuration for CCTV applications.

A larger aperture can help the camera receive more light in low-illumination environments, although final low-light performance also depends on the camera sensor, exposure settings, illumination, and image-processing system.

The manual iris provides installers with direct control over the aperture according to the actual surveillance environment.

For applications involving different lighting conditions, the Smart Security solution provides additional information about optical components used in intelligent security systems.

Frequently Asked Questions

Q: What type of lens is this 3.5-8mm model?
A: It is a CS-mount manual zoom lens designed primarily for CCTV and security camera applications. It also features an IR corrected optical design.

Q: What is the focal length range?
A: The focal length can be manually adjusted from 3.5mm to 8mm, allowing users to change the scene framing after installation.

Q: What is the horizontal field of view?
A: The horizontal FOV ranges from 81° at the 3.5mm setting to 37° at the 8mm setting.

Q: Is this lens IR corrected?
A: Yes. The specification explicitly states that the lens is IR corrected, making it suitable for day/night CCTV systems using near-infrared illumination.

Q: What camera mount does this lens use?
A: The lens uses a CS mount and is designed for compatible CS-mount camera systems.

Q: Is the zoom motorized?
A: No. This is a manual zoom lens. The focal length must be adjusted mechanically during installation or setup.

Q: What is the minimum object distance?
A: The specified M.O.D. is 0.2m, making the lens suitable for certain close-range monitoring applications.

Q: Is the iris adjustable?
A: Yes. The lens uses a manual iris, allowing the aperture to be adjusted according to the lighting conditions and camera requirements.

Related Products & Resources

For applications requiring a CS-mount surveillance lens, Towin provides several related optical configurations:

• CS-Mount Lenses — explore the complete CS-mount product range.
• Vari-Focal CCTV Lens — compare variable focal length CCTV solutions.
• DC Auto Iris Security Lens — for applications requiring automatic iris control.
• Manual Iris HD CCTV Lens — for manually controlled CCTV imaging.
• IR Corrected Lens — explore Towin’s IR corrected optical solutions.

Engineers can use the Lens Selection Guide when comparing focal length, sensor format, FOV, aperture, and other optical parameters.

For CCTV projects requiring customized focal ranges, mounting configurations, or optical specifications, contact Towin through the Contact page.

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