iRayUSA RICO Hybrid Compact HCH50R vs Nocpix ACE H50R
The RICO Hybrid Compact HCH50R runs a 640×480 core at 10 µm behind a 50 mm lens; the ACE H50R runs 640×512 at 12 µm behind 50 mm. The ACE H50R has 1.1× the pixels. On the Johnson yardstick they detect a person at 1,250 m and 1,042 m and recognize one at 313 m and 260 m; the boxes say 2,800 m and 2,610 m. The RICO Hybrid Compact HCH50R is lighter by 13.9 oz. Approximate prices are ~$5,299 and ~$4,599.
192 m identify313 m recognize1,250 m detectbox says 2,800 m (unspecified)
Nocpix ACE H50R640×512 · 12 µm · 50 mm
160 m identify260 m recognize1,042 m detectbox says 2,610 m (6 ft tall object)
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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.