DNT Optics Hydra HS635 vs DNT Optics ThermNight TNC635R
The Hydra HS635 runs a 640×512 core at 12 µm behind a 35 mm lens; the ThermNight TNC635R runs 640×512 at 12 µm behind 35 mm. The Hydra HS635 is lighter by 11.9 oz. Approximate prices are ~$2,550 and ~$3,160.
How far you can see a person
Make out detailTell what it isSpot itMaker’s claim
DNT Optics Hydra HS635640×512 · 12 µm · 35 mm
112 m make out detail182 m tell what it is729 m spot it
DNT Optics ThermNight TNC635R640×512 · 12 µm · 35 mm
112 m make out detail182 m tell what it is729 m spot it
501002005001k2k5k m
Calculated from the sensor's pixel pitch and the lens focal length, for clear air.