Description
Upgrade your surveillance system with our premium 1.3MP 3.5-8mm CS-mount varifocal CCTV lens. Designed to bridge the gap between versatile focal flexibility and high optical precision, this lens offers a customizable 79° to 35° horizontal field of view. Featuring a fast F1.4 aperture and professional DC Auto Iris technology, it automatically adapts to shifting ambient light. It ensures your security cameras capture critical details without overexposure or loss of contrast in low-light conditions.
Core Highlights
- Flexible 3.5-8mm Varifocal Range: Eliminates the guesswork of fixed lenses by allowing manual focal adjustment to target wide entryways or narrow corridors perfectly.
- True Day/Night IR Correction: Prevents focus shift under infrared illumination, eliminating blurry night footage and ensuring razor-sharp 1.3MP resolution 24/7.
- Fast F1.4 DC Auto Iris: Automatically regulates light intake to protect image sensors from glare while optimizing low-light sensitivity in fluctuating outdoor or indoor environments.
- 0.2m Minimum Object Distance: Enables close-range monitoring and macro-level tracking without losing optical clarity or introducing edge distortion.
Technical Specifications
| Parameter | Specification |
|---|---|
| Image Format | 1/3″ |
| Focal Length | 3.5 – 8 mm |
| Horizontal F.O.V. | 79° ~ 35° |
| Resolution | 1.3 Megapixel |
| Aperture | F1.4 |
| Mount Type | CS Mount |
| Iris Type | DC Auto Iris |
| Focus Control | Manual |
| Zoom Control | Manual |
| M.O.D. (Min. Object Distance) | 0.2 m |
| IR Correction | Yes (Day & Night) |
This product is certified by RoHS and ISO9001 quality management system, supports third-party testing, and complies with EU and domestic security equipment access standards, ensuring reliable quality and full compliance.
Applications & Compatibility
This industrial-grade IR corrected varifocal lens is engineered for precision surveillance in environments with demanding light transitions. It is highly optimized for commercial indoor monitoring, banking halls, retail checkout lanes, parking lot gates, and perimeter security barriers. The 3.5-8mm focal flexibility makes it ideal for locations requiring adjustable viewing zones, allowing operators to switch effortlessly between a wide-angle overview of a storefront and a narrow focus on a cash register. Its robust internal engineering ensures structural stability inside outdoor housing domes, handling continuous mechanical adjustments without alignment drift.
Compatible Devices
- Sensors: Fully compatible with standard 1/3″ and 1/4″ format CMOS/CCD image sensors.
- Camera Modules: Perfect fit for traditional Box CCTV cameras, multi-family apartment intercom systems, and speed dome modules.
- Brands & Systems: Seamless integration with Hikvision, Dahua, and Uniview CS-mount box cameras, as well as mainstream industrial inspection enclosures.
- Customization: Supports custom factory presets for focal lock and specialized anti-vibration modifications for industrial deployment.
“Designed for commercial security and smart traffic application.”
Frequently Asked Questions
Q: Does this lens experience focus shift when switching from day to night mode?
A: No. This lens features advanced IR correction. The optical glass coatings ensure that visible light and infrared light focus on the exact same focal plane, maintaining crisp, blur-free imaging during night transitions.
A: No. This lens features advanced IR correction. The optical glass coatings ensure that visible light and infrared light focus on the exact same focal plane, maintaining crisp, blur-free imaging during night transitions.
Q: What is the benefit of a DC Auto Iris on a 3.5-8mm lens?
A: The DC Auto Iris automatically responds to the camera’s video signal to open or close the aperture. This prevents image washout under direct sunlight and maximizes light intake in pitch-black conditions.
A: The DC Auto Iris automatically responds to the camera’s video signal to open or close the aperture. This prevents image washout under direct sunlight and maximizes light intake in pitch-black conditions.
Q: Can I use this CS-mount lens on a C-mount camera body?
A: No, a CS-mount lens cannot be natively mounted onto a C-mount camera because its back focal length is shorter. However, C-mount lenses can be used on CS-mount cameras using a standard 5mm adapter ring.
A: No, a CS-mount lens cannot be natively mounted onto a C-mount camera because its back focal length is shorter. However, C-mount lenses can be used on CS-mount cameras using a standard 5mm adapter ring.
Q: Is the zoom and focus adjustment motorized or manual?
A: Both zoom and focus are manually adjusted via onboard locking screws. This ensures long-term reliability and precise tuning during your initial hardware installation.
A: Both zoom and focus are manually adjusted via onboard locking screws. This ensures long-term reliability and precise tuning during your initial hardware installation.
Q: Can this 1.3MP lens handle 4K resolution camera sensors?
A: This lens is optimized for 1.3 Megapixel (720P/960P) sensors. While it will physically fit larger resolution sensors with a CS mount, the optical resolving power is tuned to deliver maximum sharpness at 1.3MP thresholds.
A: This lens is optimized for 1.3 Megapixel (720P/960P) sensors. While it will physically fit larger resolution sensors with a CS mount, the optical resolving power is tuned to deliver maximum sharpness at 1.3MP thresholds.
