Steiner Nighthunter C35 Gen II vs Steiner Nighthunter S35 Gen II
The Nighthunter C35 Gen II runs a 640×512 core at 12 µm behind a 35 mm lens; the Nighthunter S35 Gen II runs 640×512 at 12 µm behind 35 mm. On the Johnson yardstick they detect a person at 729 m and 729 m and recognize one at 182 m and 182 m. Approximate prices are ~$3,450 and ~$4,600.
Estimated range, standing human, clear air
IdentifyRecognizeDetectBox claim
Steiner Nighthunter C35 Gen II640×512 · 12 µm · 35 mm
112 m identify182 m recognize729 m detect
Steiner Nighthunter S35 Gen II640×512 · 12 µm · 35 mm
112 m identify182 m recognize729 m detectbox says 1,830 m (coyote/pig ('over 2,000 yards'; recognition 500 yd))
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.