← All units
Calculated from the sensor's pixel pitch and the lens focal length, for clear air. 
How far you can see a person
160 m make out detail260 m tell what it is1,042 m spot it┆ maker’s claim
501002005001k2k5k m
Athlon quotes 1,800 m, 1.7× our figure, because makers usually measure against a person’s full height rather than their width. Why the numbers differ
AthlonRiflescope · 640-class · Laser rangefinder
Athlon Cronus DCM Pro 50L-640
- Approx. price
- ~$4,725
- Sensor
- 640×512 · 12 µm
- Lens
- 50 mm · 2.8×
- Weight
- 20.1 oz
Buy from Athlon
Price and availability on Athlon’s site may differ.
Best for
Night shooting where ranging matters — hogs and coyotes past 150 yards
01Specifications
As published by Athlon. Sources: athlonoptics.com.
- Sensor
- 640×512
- Pixel pitch
- 12 µm
- NETD
- ≤15 mK
- Lens
- 50 mm
- Digital zoom
- up to 11.2×
- Display
- 1024x768 AMOLED
- Claimed detection
- 1,800 m
- Claim basis
- unspecified
- Run time
- 9 h
- Battery type
- 18650
- Weight
- 20.1 oz
- Length
- 6.5″
- Records video
- Yes
- Wi-Fi
- Yes
- Approx. price
- ~$4,725
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 (the best of 285 that publish it)
- Built-in laser rangefinder that feeds the ballistic calculator
- Takes 18650 batteries you can swap in the field
- 9 h of battery, 81st-longest of 344 here
- Records video and connects to a phone app
Against it
- No waterproof rating published
- ~$4,725, well above the ~$3,000 typical for riflescopes here
- Zoom past 2.8× is digital and gets blurry
- Warranty terms not published
03Compare the 50L-640
04Related units
AthlonRiflescope
Athlon Cronus ATS 50-640
Est. detection
1,042 m
Maker’s claim
not published
- Sensor
- 640×480
- Pitch · Hz
- 12 µm · —
- Lens
- 50 mm
35.3 oz~$5,000
AthlonRiflescope
Athlon Cronus ATS Pro 50-640
Est. detection
1,042 m
Maker’s claim
not published
- Sensor
- 640×480
- Pitch · Hz
- 12 µm · —
- Lens
- 50 mm
35.3 oz~$5,125
AthlonRiflescope
Athlon Cronus ATS Pro 50L-640
Est. detection
1,042 m
Maker’s claim
not published
- Sensor
- 640×480
- Pitch · Hz
- 12 µm · —
- Lens
- 50 mm
LRF · 35.3 oz~$5,625