Pulsar Krypton 2 FXQ35 vs Pulsar Thermion 2 XQ35 Pro
The Krypton 2 FXQ35 runs a 384×288 core at 17 µm behind a 35 mm lens; the Thermion 2 XQ35 Pro runs 384×288 at 17 µm behind 35 mm. On the Johnson yardstick they detect a person at 515 m and 515 m and recognize one at 129 m and 129 m; the boxes say 1,350 m and 1,350 m. The Krypton 2 FXQ35 is lighter by 15.6 oz. Approximate prices are ~$3,700 and ~$2,600.
Estimated range, standing human, clear air
IdentifyRecognizeDetectBox claim
Pulsar Krypton 2 FXQ35384×288 · 17 µm · 35 mm
79 m identify129 m recognize515 m detectbox says 1,350 m (unspecified)
Pulsar Thermion 2 XQ35 Pro384×288 · 17 µm · 35 mm
79 m identify129 m recognize515 m detectbox says 1,350 m (deer)
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.