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Armasight Contractor 640 2.3-9.2x35 vs Armasight Contractor 640 3-12x50

The Contractor 640 2.3-9.2x35 runs a 640×480 core at 12 µm behind a 35 mm lens; the Contractor 640 3-12x50 runs 640×480 at 12 µm behind 50 mm. The Contractor 640 2.3-9.2x35 is lighter by 3.4 oz.

How far you can see a person
Armasight Contractor 640 2.3-9.2x35640×480 · 12 µm · 35 mm
112 m make out detail182 m tell what it is729 m spot itmaker claims 1,305 m
Armasight Contractor 640 3-12x50640×480 · 12 µm · 50 mm
160 m make out detail260 m tell what it is1,042 m spot itmaker claims 1,865 m
501002005001k2k5k m
Calculated from the sensor's pixel pitch and the lens focal length, for clear air.
SpecArmasightArmasight Contractor 640 2.3-9.2x35ArmasightArmasight Contractor 640 3-12x50
Published
Sensor640×480640×480
Pixel pitch12 µm12 µm
NETD<40 mK<40 mK
Refresh rate60 Hz60 Hz
Lens35 mm50 mm
Base magnification2.24×3.2×
Digital zoomup to 4×up to 4×
Field of view12.57° horizontal8.8° horizontal
Display1024x768 AMOLED1024x768 AMOLED
Claimed detection1,305 m1,865 m
Claim basishuman-sized targethuman-sized target
Run time4 h4 h
Battery typeCR123CR123
Weight28.6 oz32 oz
Length9.4″9.4″
Laser rangefinderNoNo
Ballistic calculatorNoNo
Records videoYesYes
Wi-FiYesYes
IP ratingIP67IP67
Warranty3 years3 years
Approx. price~$2,999~$2,999
Derived here
IFOV0.343 mrad0.240 mrad
Est. detection729 m1,042 m
Est. recognition182 m260 m
Est. identification112 m160 m
Claim ÷ estimate1.8×1.8×
Derived field of view12.5°8.8°
Pixels per degree51.172.9
Where to buyAmazon →Amazon →

Tinted rows are where these two differ. Prices are approximate.