Guide's long-range 640×512 monocular: 50 mm F1.0 lens, 20 mK, 1920×1080 AMOLED display, 1,000 m rangefinder and two swappable 18650 cells.
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Guide TJ650 LRF vs Leica Calonox 2 View
Two thermal monoculars compared on the makers' own figures. Rows in bold are where they differ; a dash means that maker does not publish the figure.
Leica's current 640×480 thermal monocular: 42 mm F1.1 lens, 60 Hz, full-HD OLED display, 32 GB memory, IP67 and a nitrogen-filled body.
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Specification side by side
| Guide TJ650 LRF | Leica Calonox 2 View | |
|---|---|---|
| Technology | Thermal | Thermal |
| Sensor | 640×512 | 640×480 |
| Pixel pitch | 12 µm | 12 µm |
| NETD | ≤20 mK | ≤40 mK |
| Lens | 50 mm | 42 mm |
| Magnification | 3.8–30.3x | 2.5–20x |
| Digital zoom | up to 8x | up to 8x |
| Detection range | 2,000 m | 770 m |
| Field of view | 8.8° | 10.3° |
| Display | AMOLED 1920x1080 | OLED 1920x1080 |
| Recording | photo and video | photo and video |
| Wi-Fi / app | yes | yes |
| Battery life | up to 10 h | up to 8 h |
| Battery | 2x removable 18650 Li-ion | built-in Li-ion (2x 2420 mAh) |
| Weight | 625 g | 657 g |
| Water resistance | IP67 | IP67 |
Sources: Guide TJ650 LRF (spec page); Leica Calonox 2 View (spec page). Detection ranges are for a 1.8 m object under each maker's own test conditions and are not directly comparable between brands.
Full pages: Guide TJ650 LRF · Leica Calonox 2 View · all thermal monoculars in stock today
Specifications are the manufacturers' published figures. Prices are Amazon.co.uk at our last daily check. As an Amazon Associate we earn from qualifying purchases. More