Armasight Contractor 320 3-12x25 vs ATN ThOR 5 320 3-12x
The Contractor 320 3-12x25 runs a 320×240 core at 12 µm behind a 25 mm lens; the ThOR 5 320 3-12x runs 320×240 at 12 µm behind 19 mm. On the Johnson yardstick they detect a person at 521 m and 396 m and recognize one at 130 m and 99 m; the boxes say 932 m and 2,010 m. The Contractor 320 3-12x25 is lighter by 3.5 oz. Approximate prices are ~$1,649 and ~$1,795.
Estimated range, standing human, clear air
IdentifyRecognizeDetectBox claim
Armasight Contractor 320 3-12x25320×240 · 12 µm · 25 mm
80 m identify130 m recognize521 m detectbox says 932 m (human-sized target)
ATN ThOR 5 320 3-12x320×240 · 12 µm · 19 mm
61 m identify99 m recognize396 m detectbox says 2,010 m (human (ATN product page 2200 yd; ATN manual lists 750))
501002005001k2k5k m
Estimated from pixel pitch and lens focal length using the Johnson criteria (2, 8 and 13 pixels across a 0.5 m human critical dimension), clear air, 50 % probability. A model of the optics, not a measurement — real range depends on temperature contrast, humidity and the animal.