CCTV Lens – CCL12512FMP

CCL12512FMP is 12mm High-resolution CCTV lens, 1/2.5″ Low F-number CS mount lens, F1.4 low light sensitive lens, 3-Megapixel, IR corrected.

For applications requiring different focal lengths or surveillance configurations, engineers can review the complete CS-Mount Lenses range.

12mm CS-Mount IR Corrected CCTV Lens

This 3MP 12mm CS-mount fixed focal lens is designed for targeted surveillance with a 28° horizontal field of view, F1.4 aperture, and IR-corrected optical performance. Its narrow viewing angle and fixed 12mm focal length make it suitable for CCTV cameras that need focused coverage of specific monitoring zones rather than broad-area imaging.

CS-Mount CCTV Lens Core Highlights

• 12mm fixed focal length provides focused imaging for defined monitoring zones.
• 28° horizontal FOV supports narrower, more targeted surveillance coverage.
• F1.4 aperture provides a bright optical configuration for challenging indoor lighting.
• 0.1m M.O.D. supports close-range imaging despite the narrower viewing angle.
• IR-corrected optics help maintain focus consistency for day/night surveillance.

CS-Mount CCTV Lens Applications

Core Application Scenes

This 12mm CS-mount CCTV lens is designed for surveillance environments where the camera needs to concentrate on a defined area rather than capture a very wide scene. Its 28° horizontal field of view provides a relatively narrow viewing angle, allowing installers to position the camera toward specific targets such as access points, corridors, equipment areas, counters, or restricted zones.

The 12mm focal length is particularly useful when the camera is mounted farther from the target and a more concentrated field of view is required. Compared with shorter focal-length CCTV lenses, it can reduce unnecessary peripheral coverage and allocate more of the image area to the intended monitoring zone.

The F1.4 fixed aperture provides a relatively bright optical configuration for indoor surveillance environments where illumination may vary. Combined with IR correction, the lens can also be considered for day/night CCTV systems using near-infrared illumination.

For applications where focal length needs to be selected according to camera position and target size, the Lens Selection Guide provides useful optical selection considerations.

Compatible Device List

• 1/2.5″ 3MP CCTV cameras: Designed for camera systems using 1/2.5″ image sensors with up to 3MP imaging requirements.
• CS-mount surveillance cameras: Compatible with camera bodies designed for the CS mounting interface.
• Longer-distance indoor monitoring: Suitable for corridors, entrances, restricted areas, and defined monitoring zones where a narrower view is preferred.
• Access-control cameras: The focused 28° FOV can help concentrate the image on doors, gates, reception points, and controlled-access areas.
• Equipment monitoring cameras: Suitable for observing selected machinery, control panels, storage areas, or other predefined targets.
• Day/night security cameras: IR correction supports applications where the camera switches between visible-light and near-infrared imaging.

For integrated security deployments, this lens can be evaluated as part of Towin’s Smart Security solutions where fixed-position and target-oriented surveillance are required.

Optical Selection Considerations

The 12mm focal length and 28° horizontal FOV make this lens better suited to targeted coverage than wide-area surveillance. The final field of view on a camera system will depend on the sensor format and installation geometry, so engineers should verify the expected coverage before deployment.

For applications where the required lens focal length is determined by the distance between the camera and monitored target, Towin’s Focal Length Calculator can assist with preliminary lens selection.

The lens has not been specified as a low-distortion optical design. If image geometry and straight-line preservation are important to the application, engineers should review the relevant requirements in the Distortion Guide.

Designed for targeted CCTV surveillance, access monitoring, equipment observation, and day/night security cameras requiring a 12mm CS-mount fixed focal lens.

Frequently Asked Questions

Q: What type of lens is this 12mm CS-mount lens?
A: It is a 3MP fixed focal CCTV lens featuring a 12mm focal length, CS mount, F1.4 aperture, manual focus, and IR-corrected optical performance.

Q: What is the horizontal field of view of the 12mm lens?
A: The specified horizontal field of view is 28° for the stated 1/2.5″ image format.

Q: Is the 12mm CS lens a zoom lens?
A: No. It is a fixed focal lens. The focal length remains at 12mm after installation, providing a consistent viewing configuration.

Q: Why choose a 12mm focal length for CCTV surveillance?
A: A 12mm focal length provides a narrower viewing angle than shorter focal-length lenses, making it suitable for concentrating the camera’s image on a defined monitoring area.

Q: What is the aperture of this CCTV lens?
A: The lens uses a fixed F1.4 aperture, providing a relatively bright optical configuration for indoor and other controlled surveillance environments.

Q: What does IR corrected mean on this lens?
A: IR correction is designed to reduce focus shifts between visible and near-infrared wavelengths, which can help maintain more consistent focus in day/night surveillance systems.

Q: What is the minimum object distance?
A: The specified M.O.D. is 0.1m, allowing the lens to image subjects at relatively close distances when the application requires it.

Q: What cameras can use this 12mm CS-mount lens?
A: It is designed for 1/2.5″ 3MP camera systems with a CS mounting interface and can be considered for fixed-position CCTV and security monitoring applications.

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