ATN's wide-angle 384×288 monocular: 1.25–5x, 16° field of view, 60 Hz, HD recording and an 18-hour internal battery.
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ATN OTS 4T 384 1.25-5x vs InfiRay Finder FH25R
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.
A wide-angle 640×512 Finder: 25 mm lens, 17.5° field of view, 600 m rangefinder, in a 320 g body. Discontinued but still traded.
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Specification side by side
| ATN OTS 4T 384 1.25-5x | InfiRay Finder FH25R | |
|---|---|---|
| Technology | Thermal | Thermal |
| Sensor | 384×288 | 640×512 |
| Magnification | 1.3–5x | 1.5–6x |
| Digital zoom | up to 4x | up to 4x |
| Detection range | 686 m | 1,298 m |
| Field of view | 16° | 17.5° |
| Display | 1280x720 | LCOS 1280x960 |
| Recording | photo and video | photo and video |
| Wi-Fi / app | yes | yes |
| Battery life | up to 18 h | up to 6 h |
| Battery | built-in Li-ion | built-in Li-ion |
| Weight | 850 g | 320 g |
| Pixel pitch | — | 12 µm |
| NETD | — | ≤40 mK |
| Lens | — | 25 mm |
| Water resistance | — | IP66 |
Sources: ATN OTS 4T 384 1.25-5x (spec page); InfiRay Finder FH25R (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: ATN OTS 4T 384 1.25-5x · InfiRay Finder FH25R · 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