CCTV Lens – CCL1250812FMP

CCL1250812FMP 8mm CS-mount 3Megapixel CCTV lens for 1/2.5″ sensors, with 35° H FOV, F1.2 aperture and IR correction for low-light surveillance.

8mm CS-Mount 3MP F1.2 CCTV Lens

This 8mm CS-mount CCTV lens is designed for 1/2.5″ sensors and provides 3MP imaging with a 35° horizontal field of view. Featuring a fast F1.2 fixed aperture, manual focus, and IR-corrected optical design, this lens is optimized for surveillance applications that require a more concentrated viewing angle and reliable performance under changing light conditions.

The 8mm focal length provides a narrower field of view than typical wide-angle CCTV lenses, making it suitable for monitoring defined target areas rather than maximizing overall scene coverage. Its fast F1.2 aperture further supports applications where available illumination may be limited.

Product Core Highlights

• 8mm Fixed Focal Length – Provides a concentrated 35° horizontal viewing angle for defined surveillance areas.
• Fast F1.2 Aperture – Supports light-gathering performance in low-light surveillance environments.
• 3MP Resolution – Suitable for CCTV systems requiring clear imaging for monitored target areas.
• 1/2.5″ Sensor Compatibility – Designed for CCTV cameras using 1/2.5″ image sensors.
• IR Corrected Design – Supports more consistent optical performance when switching between visible and near-infrared illumination.

CS-Mount CCTV Lens Applications

Core Application Scenes

The 8mm focal length and 35° horizontal FOV make this lens fundamentally different from ultra-wide CCTV configurations. Instead of covering an entire room or large indoor scene, it is better suited to installations where the camera needs to concentrate on a specific area, access point, object, or viewing zone.

The fast F1.2 aperture also makes the lens particularly useful in surveillance environments where the lighting level can change significantly throughout the day.

Typical application scenarios include:

• Entrance and doorway monitoring – Focus the camera on a defined entrance area while maintaining useful subject detail.
• Access control points – Monitor gates, doors, checkpoints, and controlled passages without unnecessarily capturing a very large surrounding area.
• Corridor surveillance – The narrower viewing angle can be useful when the camera is positioned along a corridor or passageway.
• Perimeter monitoring – Cover a specific section of a property boundary or restricted area from a fixed camera position.
• Equipment and facility monitoring – Focus on machinery, equipment zones, storage areas, or other predefined targets.
• Retail security – Monitor checkout counters, display areas, entrances, or specific high-value zones.
• Low-light security monitoring – The F1.2 aperture makes the lens suitable for locations where illumination is limited or changes between daytime and nighttime.

Designed for targeted CCTV surveillance applications, this 8mm lens is a good choice when the installation requires a more focused viewing angle rather than maximum wide-area coverage.

Compatible Devices

This lens can be integrated with:

• 1/2.5″ 3MP CCTV cameras
• CS-mount security cameras
• Fixed surveillance camera systems
• Entrance monitoring cameras
• Access control cameras
• Perimeter surveillance cameras
• Indoor facility monitoring cameras
• Retail security camera systems
• Low-light CCTV platforms

For other professional CCTV configurations, explore CS-Mount Lenses to compare different focal lengths and optical specifications.

F1.2 Aperture for Low-Light Surveillance

The F1.2 aperture is one of the main optical characteristics of this lens. A fast aperture allows the optical system to transmit more light to the camera sensor, which can be beneficial when the monitored scene has limited ambient illumination.

This makes the lens suitable for locations such as:

• Building entrances with uneven lighting
• Indoor areas with limited illumination
• Evening security monitoring
• Retail environments operating after dark
• Facility areas where supplementary lighting is limited

Actual low-light image quality will also depend on the camera sensor, exposure settings, gain, shutter speed, and available illumination. The F1.2 optical configuration provides an important foundation for low-light imaging but should be evaluated as part of the complete camera system.

8mm Focal Length for Targeted Monitoring

With a 35° horizontal FOV, the lens is intended for more concentrated scene coverage than short-focal-length wide-angle CCTV lenses.

This delivers practical value for cameras placed farther from targets or set to monitor only specific areas. For example, it frames entrances, gates, corridor sections, equipment areas or perimeter zones without capturing excessive surrounding space.

When selecting the appropriate focal length for a specific installation distance and target size, the FOV Calculator can help estimate the required viewing angle.

IR Corrected for Day & Night Operation

The IR-corrected optical design helps maintain more consistent imaging performance when the CCTV camera operates across visible-light and near-infrared illumination conditions.

This makes the lens suitable for surveillance systems equipped with IR illumination for nighttime monitoring. The IR-corrected configuration is particularly useful for security cameras that need to maintain stable optical performance when switching between daytime and nighttime operating modes.

Why Choose This 8mm CS-Mount CCTV Lens?

This lens is designed for surveillance systems that need focused scene coverage rather than an ultra-wide perspective. Its 8 mm focal length delivers a 35° horizontal FOV for defined target areas, while the F1.2 aperture supports applications with limited light availability.

The combination of 1/2.5″ sensor compatibility, 3MP resolution, CS mount, fixed focal length, 8mm B.F.L., and IR correction provides a practical configuration for professional CCTV camera integration.

For projects requiring a different focal length, sensor format, aperture, or customized optical configuration, contact TOWIN for lens selection and OEM/ODM optical support.

Frequently Asked Questions

Q: What sensor size is this 8mm CS-mount lens designed for?
A: This lens supports 1/2.5-inch image sensors and delivers 3MP resolution.

Q: What is the horizontal field of view of this 8mm CCTV lens?
A: The specified horizontal field of view is 35°, providing a relatively concentrated viewing angle for targeted surveillance.

Q: Is this an 8mm fixed focal lens?
A: Yes. It features a fixed 8 mm focal length and fixed zoom specification, so it delivers no optical zoom.

Q: Why choose an 8mm lens instead of a wide-angle CCTV lens?
A: An 8mm lens provides a narrower viewing angle, making it more suitable when the camera needs to focus on a defined target area, entrance, corridor, perimeter section, or specific facility zone.

Q: Is the F1.2 aperture suitable for low-light CCTV?
A: Yes. The fast F1.2 aperture allows more light to reach the image sensor than slower-aperture configurations under comparable conditions, making it suitable for low-light surveillance applications.

Q: Is this lens suitable for nighttime surveillance?
A: Yes. The lens features IR correction, pairing seamlessly with CCTV systems that use near-infrared illumination for round-the-clock monitoring.

Q: What is the B.F.L. of this 8mm lens?
A: The specified B.F.L. is 8mm.

Q: Is this lens a low-distortion CCTV lens?
A: Do not claim low‑distortion performance for this lens, as it comes with no published distortion specification.

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