Description
TAMRON M118VG1250IR 5MP 12–50mm NIR Vari-Focal CCTV Lens
Product Overview
The TAMRON M118VG1250IR is a professional 5-megapixel NIR (Near-Infrared) vari-focal lens designed for high-resolution CCTV and network surveillance cameras. Featuring a 1/1.8-inch optical format, 12–50 mm focal length, CS-mount, and DC auto iris, this lens provides flexible telephoto coverage for surveillance applications where detailed monitoring of distant subjects is required.
The lens is specifically designed to maintain high optical performance from visible light through near-infrared wavelengths, making it suitable for day/night surveillance cameras and applications where reliable image quality is required under changing lighting conditions.
Key Features
- 5MP High-Resolution CCTV Lens
- 1/1.8″ Image Sensor Format
- 12–50 mm Vari-Focal Range
- CS Mount
- DC Auto Iris
- Manual Zoom with Lock
- Manual Focus with Lock
- NIR (Near-Infrared) Compatible
- Visible Light to Near-IR Optical Performance
- F1.4–F360 Aperture Range
- 1.0 m to Infinity Focus Range
- Suitable for Day/Night Surveillance Cameras
- Compact and Lightweight Design
- Designed for Professional CCTV Applications
5MP High-Resolution Optical Performance
The M118VG1250IR was developed for high-resolution surveillance applications and supports imaging systems up to 5 megapixels. Its optical design helps maintain sharp and detailed images across the complete focal-length range.
This makes the lens particularly suitable for surveillance systems where identification and monitoring of subjects at medium and long distances are important.
12–50mm Vari-Focal Lens
The 12–50 mm focal-length range provides a flexible combination of moderate wide-angle and telephoto coverage.
At 12 mm, the lens provides a wider field of view suitable for general surveillance. At 50 mm, it provides significantly narrower coverage for monitoring distant targets.
For a 1/1.8-inch sensor, the field of view ranges from:
- Wide: 34.0° × 25.5°
- Tele: 8.5° × 6.4°
This makes the lens particularly suitable for applications such as entrances, roads, parking areas, perimeter surveillance, and other locations where flexible framing and long-range observation are required.
NIR-Compatible Optical Design
One of the key advantages of the M118VG1250IR is its compatibility with near-infrared wavelengths.
The optical system is designed to maintain image quality from visible light through near-IR, helping day/night cameras produce consistent images when switching between normal illumination and infrared illumination.
This makes the lens a suitable choice for:
- Day/Night CCTV Cameras
- IR Surveillance Cameras
- Outdoor Security Systems
- Low-Light Monitoring
- Perimeter Security
- 24/7 Surveillance Applications
DC Auto Iris
The lens features a DC auto-iris mechanism, allowing the camera system to automatically regulate the amount of light entering the lens according to lighting conditions.
The aperture range extends from F/1.4 to F/360, providing flexibility for different illumination environments.
The relatively bright F/1.4 maximum aperture also helps support image capture in lower-light conditions.
Manual Zoom and Focus
The M118VG1250IR uses manual zoom and manual focus controls with locking mechanisms.
This allows installers to precisely:
- Set the required focal length
- Adjust the camera’s field of view
- Focus on the surveillance target
- Lock the optical settings after installation
The manual locking mechanism helps prevent unwanted changes to zoom and focus after the lens has been properly configured.
CS-Mount Compatibility
The CS mount makes the M118VG1250IR compatible with a wide range of professional CCTV box cameras designed to accept CS-mount lenses.
The lens has a 9.62 mm back focal distance in air, allowing proper optical alignment with compatible camera bodies.
Long-Range Surveillance Applications
With its 12–50 mm focal range, the lens is optimized for applications requiring more telephoto reach than standard 2.8–12 mm or 3.5–10 mm surveillance lenses.
Typical applications include:
- Perimeter Monitoring
- Parking Lot Surveillance
- Road & Traffic Monitoring
- Building Entrances
- Industrial Facilities
- Warehouses
- Transportation Infrastructure
- Critical Infrastructure
- Large Commercial Properties
- Outdoor Security Systems
Technical Specifications
| Specification | Details |
|---|---|
| Model | M118VG1250IR |
| Brand | TAMRON |
| Product Type | 5MP NIR Vari-Focal CCTV Lens |
| Image Format | 1/1.8″ |
| Focal Length | 12–50 mm |
| Mount Type | CS Mount |
| Maximum Aperture | F/1.4 |
| Aperture Range | F/1.4–F/360 |
| Iris | DC Auto Iris |
| Zoom | Manual with Lock |
| Focus | Manual with Lock |
| Focus Range | 1.0 m – Infinity |
| Back Focal Distance | 9.62 mm |
| Wavelength | Visible Light – Near Infrared |
| FOV – 1/1.8″ Wide | 34.0° × 25.5° |
| FOV – 1/1.8″ Tele | 8.5° × 6.4° |
| Operating Voltage | Open: 4V / Close: 0.5V |
| Weight | Approx. 130 g |
| Operating Temperature | -20°C to +60°C |
Specifications are based on TAMRON’s official product information and datasheet.
