The Pixfra Sirius S650D 25/50mm is a high-mid-range thermal monocular whose main attraction is its dual-focal-length lens system (25 mm and 50 mm), which allows for quick switching between a wide field of view for detection and powerful optical zoom for target identification without loss of resolution.
This device is designed primarily for hunting activities (waiting/ambush and stalking), wildlife observation, and professional outdoor use.
Key Technical Specifications
- Dual Optical System: Allows switching—by rotating the lens—between a 25 mm focal length (ideal for scanning large, open areas) and a 50 mm focal length (for long-range, magnifying-glass-style detail).
- VOx Thermal Sensor: 640 × 512 pixel resolution with a 12 µm pixel size.
- Extreme Thermal Sensitivity (NETD): Less than 18 mK, providing exceptional capability to distinguish minute temperature variations, even in rain or dense fog.
- Detection Range: It is capable of detecting thermal signatures at very long ranges, between 1,800 and 2,600 meters.
- Display: It features a 0.49-inch OLED panel with Full HD resolution (1920 × 1080 pixels) and a 50 Hz refresh rate to prevent motion blur.
Field of View and Magnification Based on the Selected Lens
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Advanced Features and Ergonomics
- AI-Assisted Calibration (AAIC): Optimizes and cleans up image noise intelligently and adaptively based on the environment.
- PIPS 2.0 Firmware: Includes advanced algorithms to enhance edge sharpness and a special "Forest" mode that highlights animals amidst dense vegetation.
- Battery life: Operates on interchangeable 18650 batteries, offering up to 6 hours of continuous use in moderate temperatures (between 4.5 and 5 hours in extreme cold).
- Storage and Interface: It features 64 GB of internal memory for recording photos and videos, as well as Wi-Fi connectivity to link with the Pixfra mobile app.
- IP67-rated: Rugged, ergonomic chassis suitable for left- and right-handed users, fully protected against water and dust.