CS-Mount Lenses for Security and Industrial Imaging
Multiple Focal Length Options
Choose fixed or varifocal lenses for your needs.
Different Sensor Formats
Select a lens for your camera sensor size and image coverage.
Flexible Iris Configurations
Manual iris, DC auto iris, and P-iris options.
Day-and-Night Imaging
IR-corrected lenses for visible and near-infrared.
Resolution Options
Verify compatibility with your camera sensor.
Explore the CS-mount lens collection below to compare focal length, sensor format, field of view, resolution, distortion, aperture, and other available specifications.
CS-Mount Lenses Products
Compare our available CS-mount lenses by focal length, resolution, aperture, iris type, and other key specifications. Select an individual product to review its detailed optical parameters and determine whether it meets your camera and application requirements.
Lens P/N | E.F.L. | Sensor | H. F.O.V. | MP | Max Dist. | FNo. | Iris | T.T.L. |
|---|---|---|---|---|---|---|---|---|
4-12mm | 1/2" | 98°~29° | 3MP | 1.6 | DC Auto | 63.7 | ||
15-45mm | 1/2" | 15°~5° | 1.3MP | 1.0 | DC Auto | |||
15-45mm | 1/2" | 15°~5° | 1.3MP | 1.0 | Manual | 121 | ||
6-60mm | 1/2.5" | 43°-5.5° | 3MP | 1.4 | DC Auto | |||
8mm | 1/2.5" | 35° | 3MP | 1.2 | Fixed | |||
8mm | 1/2.5" | 41° | 3MP | 1.4 | Fixed | 23.2 | ||
12mm | 1/2.5" | 28° | 3MP | 1.4 | Fixed | 22.7 | ||
16mm | 1/2.5" | 21° | 3MP | 1.4 | Fixed | 23.2 | ||
2.8-12mm | 1/2.7" | 109°~31° | 3MP | 1.4 | DC Auto | 44.9 | ||
3.6mm | 1/2.7" | 92° | 2MP | 1.6 | Fixed | 20.2 | ||
4.0mm | 1/2.7" | 80° | MP | 1.6 | Fixed | 22.34 | ||
4.0mm | 1/2.7" | 80° | 2MP | 1.6 | Fixed | 22.34 | ||
5-50mm | 1/2.7" | 50.9°~6.2° | 4MP | 5% | 1.4 | DC Auto | 85.4 | |
2.8-12mm | 1/2.7" | 109°~31° | 3MP | 1.4 | DC Auto | |||
2.8-12mm | 1/2.7" | 113°~28° | 3MP | 89% | 1.4 | DC Auto | 73.5 | |
3.5-8mm | 1/3" | 81°~37° | VGA | 1.0 | Manual | 51.2 | ||
4.0mm | 1/3" | 66° | VGA | 1.6 | Fixed | 24.5 | ||
5-50mm | 1/3" | 75.5°~8.5° | 1.3MP | 1.6 | Fixed | |||
6mm | 1/3" | 45° | MP | 1.2 | Manual | |||
8mm | 1/3" | 34° | MP | 1.2 | Manual | 35.2 |
Explore CS-Mount Lens Products
Compare our available CS-mount lenses by focal length, resolution, aperture, iris type, and other key specifications.
Select an individual product to review its detailed optical parameters and determine whether it meets your camera and application requirements.
Fixed Focal Megapixel Lenses
Ideal for applications that require a stable field of view and consistent imaging performance.
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Manual Iris HD CCTV Lenses
Allows manual aperture control for changing light conditions and different depth of field needs.
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DC Auto Iris Security Lenses
Automatically adjusts aperture based on ambient light for stable exposure.
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P-Iris IP Camera Lenses
Provides precise aperture control and is compatible with IP cameras that support P-Iris.
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Varifocal Day & Night Lenses
Offers flexible focal length adjustment and IR correction for day and night surveillance.
View ProductsHow to Choose the Right CS-Mount Lens
Selecting a suitable CS-mount lens requires matching the optical specifications to your camera and application. Consider the following factors before making a decision.
Check Sensor Size and Compatibility
The lens must provide an image circle that adequately covers the camera sensor. Check the supported sensor format and confirm that the lens is compatible with your camera's mounting interface.
Camera Sensor Guide →
Determine the Required Field of View
Your required field of view depends on the scene width, working distance, and camera installation position. A shorter focal length generally provides a wider field of view when other conditions remain the same.
FOV Calculator →
Match Resolution to the Application
Choose a lens that can support the sensor resolution and the level of detail required by the application. The megapixel rating alone does not guarantee sufficient image quality; optical performance across the sensor area should also be considered.
Select the Appropriate Aperture and Iris Type
Aperture affects the amount of light reaching the sensor, exposure, and depth of field. Manual iris, DC auto iris, and P-Iris lenses provide different control methods, so select an option that is compatible with your camera and lighting conditions.
Consider Day-and-Night Imaging Requirements
For cameras operating under both visible light and near-infrared illumination, verify the lens's spectral performance and focus characteristics across the required wavelengths. Do not assume that every security lens is fully IR corrected.
Useful Resources
Explore these tools to select the right lens with confidence.
Camera Sensor Guide Understand formats and compatibility. 
FOV Calculator Estimate coverage for your setup. 
Lens Selection Guide Review the complete selection checklist. CS-Mount vs. C-Mount: What Is the Difference?
CS-mount and C-mount lenses are widely used in security cameras and industrial imaging systems, but they differ in their flange focal distance. While both use a 1-inch, 32-threads-per-inch mounting thread, they are not automatically interchangeable in every camera configuration.
A C-mount lens can generally be used on a compatible CS-mount camera with a suitable 5 mm spacer adapter. A CS-mount lens on a C-mount camera generally cannot reach the required focus because its flange focal distance is shorter.
CS-Mount Lenses for Smart Security
CS-mount lenses are used in compatible surveillance and network camera systems where focal length, aperture control, image resolution, and day-and-night performance must match the monitoring environment. Lens selection should account for the scene coverage, camera sensor, illumination conditions, and required image detail.
Explore Smart Security Solutions →
Wide Scene CoverageDay & Night PerformanceHigh Image Resolution
Reliable & Stable OperationFrequently Asked Questions
Need Help Selecting a CS-Mount Lens?
Tell us your camera sensor, focal length or field-of-view requirement, working distance, and application. Our team can help you identify suitable lens options for your project.