Kowa LM25JS5MA | 1" 25mm F0.85 Low Light Lens, 5MP, CS-Mount, Manual Focus, Auto Iris, Broadband 400–1000nm Coating
The Kowa LM25JS5MA is a high-speed, F0.85 low light fixed focal lens engineered for CS-mount cameras using 1" format sensors up to 5 megapixel resolution. It delivers outstanding performance in low-light environments thanks to its ultra-fast F0.85 aperture and broadband anti-reflective coating across the 400nm–1000nm spectrum, covering both visible and near-infrared wavelengths. Ideal for security, ITS, and border surveillance systems, this lens supports crisp, high-contrast imaging even with small pixel pitch sensors and limited ambient light.
The lens features a manual focus mechanism, DC auto iris (AI-DC) for dynamic exposure control, and a rugged design supporting -10°C to +50°C operation. Its 25mm focal length, M77 x 0.75mm filter thread, and 3m MOD offer excellent flexibility in mid-to-long range observation setups. With dimensions of 78.5 x 117mm, 29° horizontal field of view, and a weight of 800g, the LM25JS5MA is optimized for high-precision applications requiring superior optical clarity and stability across a broad wavelength range.
Features:
- 25mm fixed focal length
- Ultra-fast F0.85 aperture for extreme low-light sensitivity
- 5MP resolution support
- Compatible with 1" image sensors
- CS-mount for compact camera integration
- DC auto iris (AI-DC) for automatic exposure control
- Manual focus adjustment
- M77 x 0.75mm filter thread
- Broadband coating for 400nm–1000nm wavelength range
- Supports visible to NIR imaging
- Rugged metal housing
- Operating temperature: -10°C to +50°C
- Includes 25cm cable with 4-pin plug
Applications:
- Border control systems
- ITS and traffic monitoring
- CCTV and public safety
- Industrial automation
- Low-light machine vision
- Surveillance in variable lighting environments
- Near-infrared imaging applications
| Model | Kowa LM25JS5MA |
| Sensor Format | 1" |
| Focal Length | 25mm |
| Aperture Range | F0.85 – F360 |
| Aperture Control | DC Auto Iris (AI-DC) |
| Focus Control | Manual |
| Mount Type | CS-Mount |
| Resolution | 5 Megapixel |
| Filter Thread | M77 x 0.75mm |
| Minimum Object Distance (MOD) | 3 meters |
| Horizontal Field of View | 29° |
| Wavelength Range | 400nm – 1000nm (Broadband Coating) |
| Dimensions (mm) | 78.5 x 117 |
| Weight | 800g |
| Operating Temperature | -10°C to +50°C |
| Cable & Connector | 25cm cable with 4-pin plug |
| Application Fields | Border Control, CCTV/Security, ITS/Traffic Control |



