CCTV Lens – CS105011814A8

CS105011814A8 is High-resolution 8-Megapixel CCTV lens, 1/1.8″ 10-50mm low-distortion lens, F1.4 CS mount, DC Auto IRIS, IR corrected, suitable for low light conditions.

1/1.8″ 8MP 10–50mm F1.4 IR Corrected CS-Mount Zoom CCTV Lens

This 1/1.8″ 8MP CS-Mount CCTV Lens features a 10–50mm variable focal length, F1.4 maximum aperture, DC auto iris, and IR correction for flexible professional surveillance applications. Its wide-to-telephoto zoom range provides a diagonal FOV of 44.5° to 10.5°, horizontal FOV of 38° to 9°, and vertical FOV of 21° to 5°, allowing users to adjust scene coverage without changing the lens. With manual focus, manual zoom, a 1.5m minimum object distance, and controlled distortion from -9% to 0.05%, this lens is designed for 1/1.8″ high-resolution security cameras that require flexible framing and stable imaging across different lighting conditions.

IR Corrected CS-Mount CCTV Lens Highlights at a Glance

• 8MP optical resolution for high-resolution 1/1.8″ security cameras
• 10–50mm zoom range supports flexible wide-to-telephoto scene framing
• F1.4 maximum aperture provides high light transmission for demanding lighting conditions
• DC auto iris automatically adjusts the aperture according to changes in scene illumination
• IR corrected optical design helps maintain more consistent focus between visible and near-infrared wavelengths
• -9% to 0.05% distortion range supports controlled image geometry across the zoom range

IR Corrected CS-Mount CCTV Lens Applications

Core Application Scenes

The 10–50mm focal range makes this lens suitable for surveillance scenes where the required viewing area may vary significantly between installations. At 10mm, the lens provides a 38° horizontal FOV for relatively broad scene coverage. At 50mm, the horizontal FOV narrows to 9°, allowing the camera to concentrate on a smaller or more distant area.

Typical applications include:

• Commercial CCTV surveillance
• Building perimeter monitoring
• Entrance and gate surveillance
• Parking area monitoring
• Warehouse and facility security
• Retail and commercial property surveillance
• Long-distance security observation
• Indoor or controlled-environment high-resolution monitoring

The DC auto iris is useful for surveillance systems exposed to changing illumination because the aperture can automatically respond to variations in scene brightness. The IR corrected design is also valuable in cameras that switch between visible-light and near-infrared illumination, helping reduce wavelength-related focus differences.

Designed for high-resolution CCTV and security surveillance applications requiring adjustable focal length, automatic iris control, and IR-corrected imaging.

Compatible Devices

This lens is designed for:

• 1/1.8″ image sensors
• 8MP security cameras
• CS-mount CCTV cameras
• Professional surveillance camera systems
• Security cameras using near-infrared illumination
• Fixed surveillance installations requiring manual zoom adjustment

For other CS interface options, users can explore the full CS-Mount Lenses range. For applications where infrared performance is an important selection criterion, the IR Corrected Lens category provides a more focused product group.

Optical Performance & Selection Considerations

10–50mm Variable Focal Length

The 10–50mm range provides a substantial change in field of view without requiring the camera position to be changed. The 10mm setting provides the widest coverage, while 50mm provides a much narrower viewing angle for more concentrated observation.

Before selecting the lens, users should consider the camera’s installation distance, target size, sensor format, and required field of view. TOWIN’s FOV Calculator can help estimate the relationship between sensor size, focal length, and viewing coverage.

IR-Corrected Optical Design

An IR-corrected lens is designed to reduce the focus difference that can occur when imaging wavelengths change from visible light toward near-infrared wavelengths. This is particularly relevant for surveillance cameras equipped with IR illumination or day/night imaging functions.

8MP Resolution for 1/1.8″ Sensors

The lens is specified for 8 Megapixel resolution and a 1/1.8″ image format. Matching the lens image circle and resolution with the camera sensor is important when building a high-resolution surveillance system. TOWIN’s Sensor Guide provides additional information about sensor format and lens compatibility.

Frequently Asked Questions

Q1: What sensor size is this 10–50mm lens designed for?
A: This lens is designed for 1/1.8″ image sensors and is specified for up to 8 Megapixel resolution.

Q2: Is this a fixed focal length lens?
A: No. It is a manual zoom lens with a focal length adjustable from 10mm to 50mm.

Q3: What is the field of view at 10mm and 50mm?
A: The diagonal FOV is 44.5°–10.5°, horizontal FOV is 38°–9°, and vertical FOV is 21°–5°. The exact value depends on the selected focal length.

Q4: What does IR corrected mean on this lens?
A: The optical design is corrected for visible and near-infrared wavelengths to help reduce focus differences when the illumination wavelength changes. This is useful for surveillance cameras using IR illumination.

Q5: Does the lens have automatic iris control?
A: Yes. It uses a DC auto iris, allowing the aperture to respond automatically to changes in scene illumination.

Q6: Can the focus and zoom be controlled automatically?
A: The specified focus and zoom are manual. The installer adjusts these parameters mechanically during camera installation and setup.

Q7: Is this lens suitable for high-resolution CCTV cameras?
A: Yes. The lens is specified at 8 Megapixel resolution and is designed for 1/1.8″ CS-mount camera systems.

Q8: What is the minimum object distance?
A: The minimum object distance is 1.5m. The actual usable framing depends on the selected focal length and camera installation conditions.

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