← All units
Calculated from the sensor's pixel pitch and the lens focal length, for clear air. 
How far you can see a person
112 m make out detail182 m tell what it is729 m spot it┆ maker’s claim
501002005001k2k5k m
ATN quotes 1,830 m, 2.5× our figure, because makers usually measure against a person’s full height rather than their width. Why the numbers differ
ATNHandheld monocular · 640-class · Laser rangefinder
ATN BlazeHunter 635 LRF
- Approx. price
- ~$1,895
- Sensor
- 640×512 · 12 µm
- Lens
- 35 mm · 2.5×
- Weight
- 12.7 oz
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Best for
Walk-and-scan glassing from a jacket pocket
01Specifications
As published by ATN. Sources: atncorp.com (product page + compare API).
- Sensor
- 640×512
- Pixel pitch
- 12 µm
- NETD
- <18 mK
- Refresh rate
- 50 Hz
- Lens
- 35 mm
- Digital zoom
- up to 8×
- Field of view
- 12.4° horizontal
- Display
- 1440x1080 OLED
- Claimed detection
- 1,830 m
- Claim basis
- unspecified (2000 yd)
- Run time
- 14 h
- Battery type
- 18650
- Weight
- 12.7 oz
- Length
- 6″
- Records video
- Yes
- Wi-Fi
- Yes
- IP rating
- IP67
- Warranty
- 3 years
- Approx. price
- ~$1,895
02Pros and cons
From the published specs, not owner reports.
For it
- 640×512 sensor, 3× the detail of an entry-level 384
- Sensitive sensor that picks out small heat differences on humid or rainy nights (56th-best of 285 that publish it)
- Built-in laser rangefinder
- Takes 18650 batteries you can swap in the field
- 14 h of battery, the longest of 344 here
- Waterproof (IP67), survives a dunking
- Records video and connects to a phone app
Against it
- Rangefinder but no ballistic calculator, so holdover is up to you
03Compare the LRF
04Related units
ATNHandheld monocular
ATN BlazeHunter 635
Est. detection
729 m
Maker’s claim
1,830 m
- Sensor
- 640×512
- Pitch · Hz
- 12 µm · 50
- Lens
- 35 mm
11.3 oz~$1,695
ATNHandheld monocular
ATN ODIN LT 640 3-12x
Est. detection
729 m
Maker’s claim
1,440 m
- Sensor
- 640×480
- Pitch · Hz
- 12 µm · 60
- Lens
- 35 mm
60 Hz · 12.1 oz~$2,895
ATNHandheld monocular
ATN BlazeTrek 6 625
Est. detection
521 m
Maker’s claim
1,300 m
- Sensor
- 640×512
- Pitch · Hz
- 12 µm · 50
- Lens
- 25 mm
11.3 oz~$1,499