CCTV Lens – S359512518F5

S359512518F5 is 3.5-9.5mm High-Resolution CCTV lens, 1/2.5″ wide-angle lens, F1.8 aperture M12 mount lens, 5-megapixel resolution, IR corrected.

For engineers evaluating other compact lens configurations, Towin’s M12 Lenses category provides additional M12 optical solutions for different sensors, fields of view, and imaging requirements.

5MP 3.5-9.5mm M12 Manual Zoom CCTV Lens

This 5MP 3.5-9.5mm M12 manual zoom CCTV lens combines a 90° wide-angle field of view, flexible focal-length adjustment, IR-corrected optics, and a compact M12 mounting interface. It is designed for compact CCTV and embedded imaging systems that require broad scene coverage with manually adjustable framing.

M12 Zoom CCTV Lens Core Highlights

• 3.5–9.5mm manual zoom provides flexible focal-length adjustment without motorized control.
• 90°–34° horizontal FOV supports wide-area viewing and tighter scene framing.
• 5MP resolution delivers detailed imaging for compact camera systems.
• F1.8 fixed aperture provides a consistent optical configuration across the zoom range.
• IR-corrected optics support imaging across visible and near-infrared wavelengths.

M12 Zoom CCTV Lens Applications

Core Application Scenes

This 3.5–9.5mm M12 zoom lens is suited to compact camera systems where installers need to manually adjust the viewing angle after installation. Its 90° horizontal field of view at the wide end allows a single camera to monitor relatively large areas, while the 9.5mm setting provides a narrower 34° view for focusing attention on a specific region.

The lens is particularly useful in compact CCTV modules, embedded security cameras, access monitoring equipment, and space-constrained imaging devices. Its M12 interface provides a compact mechanical format, while the 0.3m minimum object distance allows the camera to be positioned relatively close to the monitored subject.

The relatively high negative distortion at the short focal-length end means this lens is intended for applications where wide-area visual coverage is more important than geometrically rectified imaging. It can therefore be suitable for general surveillance and situational awareness rather than precision measurement.

For applications requiring different optical characteristics, engineers can use Towin’s Lens Selection Guide to compare focal length, sensor format, field of view, and other lens parameters.

Compatible Device List

• 1/2.5″ 5MP camera modules: Designed for compact CMOS imaging sensors requiring up to 5MP optical performance.
• Compact CCTV cameras: Suitable for security cameras where manual zoom adjustment is sufficient during installation.
• Embedded vision devices: The M12 mount supports compact camera assemblies used in space-limited equipment.
• Access and entrance monitoring systems: The wide-angle 3.5mm setting can provide broad coverage around doors, gates, and controlled-access areas.
• Indoor security cameras: Suitable for retail, office, corridor, and small-area surveillance where manual field-of-view adjustment is useful.
• Day/night imaging equipment: IR correction helps maintain more consistent focus when visible and near-infrared wavelengths are used.

For broader embedded and compact M12 imaging applications, this lens can be integrated into M12 Lens solutions where small mechanical dimensions and flexible viewing angles are important.

Optical Selection Considerations

The lens provides a 90° horizontal FOV at 3.5mm, making it suitable when a camera needs to capture a relatively broad scene from a limited mounting position. Moving toward 9.5mm reduces the horizontal FOV to 34°, allowing the installer to concentrate the image on a smaller area.

Because the specified distortion ranges from -49% to -5%, the lens should not be selected when straight-line preservation or dimensional measurement is a primary requirement. Engineers requiring low geometric distortion should instead review Towin’s Distortion Guide before choosing an optical design.

For determining the expected scene coverage at a particular working distance, the FOV Calculator can be used to evaluate field-of-view requirements before installation.

Designed for compact wide-angle CCTV, embedded security cameras, and M12 camera modules requiring manual zoom adjustment and IR-corrected imaging.

Frequently Asked Questions

Q: What is the horizontal field of view of this M12 lens?
A: The horizontal field of view ranges from 90° at 3.5mm to 34° at 9.5mm, allowing the user to manually adjust the coverage from a wide scene to a narrower viewing area.

Q: Is the zoom motorized?
A: No. Both zoom and focus are manual. The installer can adjust the focal length and focus mechanically according to the camera’s installation distance and required scene coverage.

Q: Is this lens a fixed focal lens?
A: No. You can manually adjust its focal length from 3.5mm to 9.5mm, so it falls into the zoom lens category instead of the fixed focal lens category.

Q: What does IR corrected mean?
A: IR correction is intended to reduce focus variation between visible and near-infrared wavelengths. This makes the lens suitable for camera systems that may operate with infrared illumination or across different lighting conditions.

Q: What cameras are compatible with this lens?
A: The lens is designed for 1/2.5″ image sensors and uses an M12 mounting interface. It can be considered for compact 5MP CCTV cameras, embedded camera modules, and other M12-based imaging systems.

Q: What is the minimum object distance of this lens?
A: The specified minimum object distance is 0.3m, making it suitable for relatively close-range monitoring applications as well as general indoor surveillance.

Q: Is this lens suitable for precision measurement?
A: It is generally not intended for precision measurement because the specified distortion is -49% to -5%. Applications requiring strong geometric accuracy should use an optical design specifically optimized for low distortion.

Online contact