← All units
Calculated from the sensor's pixel pitch and the lens focal length, for clear air. 
How far you can see a person
135 m make out detail219 m tell what it is875 m spot it┆ maker’s claim
501002005001k2k5k m
Leica quotes 2,210 m, 2.5× our figure, because makers usually measure against a person’s full height rather than their width. Why the numbers differ
LeicaHandheld monocular · 640-class
Leica Calonox 2 View
- Approx. price
- ~$4,899
- Sensor
- 640×480 · 12 µm
- Lens
- 42 mm · 2.5×
- Weight
- 22.7 oz
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Best for
Scanning from a stand, a truck or a field edge
01Specifications
As published by Leica. Sources: leica-camera.com Calonox 2 View instruction manual PDF (technical data p.32), leicacamerausa.com (price, warranty).
- Sensor
- 640×480
- Pixel pitch
- 12 µm
- Refresh rate
- 60 Hz
- Lens
- 42 mm
- Field of view
- 10.3° horizontal
- Display
- 1280x960 OLED
- Claimed detection
- 2,210 m
- Claim basis
- 1.7 m x 0.5 m subject at 2 px (Leica 'recognition' 770 m at 6 px)
- Run time
- 8 h
- Battery type
- Internal Li-ion
- Weight
- 22.7 oz
- Length
- 5.5″
- Records video
- Yes
- Wi-Fi
- Yes
- IP rating
- IP67
- Warranty
- 10 years (Passport Protection Plan)
- Approx. price
- ~$4,899
02Pros and cons
From the published specs, not owner reports.
For it
- 640×480 sensor, 2.8× the detail of an entry-level 384
- Smooth 60 Hz picture on a running animal
- 8 h of battery
- Waterproof (IP67), survives a dunking
- Records video and connects to a phone app
- Warranty: 10 years (Passport Protection Plan)
Against it
- Sensitivity (NETD) not published
- Built-in battery, so no swapping in the field
- Heavy at 22.7 oz, 14th-heaviest of the 112 handhelds here
- No rangefinder, so you judge distance by eye
- ~$4,899, well above the ~$1,995 typical for handhelds here
03Compare the View
04Related units
LeicaHandheld monocular
Leica Calonox 2 View LRF
Est. detection
875 m
Maker’s claim
2,210 m
- Sensor
- 640×480
- Pitch · Hz
- 12 µm · 60
- Lens
- 42 mm
LRF · 60 Hz · 24.3 oz~$5,899
ZeissHandheld monocular
Zeiss DTI 6/40
Est. detection
833 m
Maker’s claim
2,000 m
- Sensor
- 640×480
- Pitch · Hz
- 12 µm · 50
- Lens
- 40 mm
26.6 oz~$4,800
ATNHandheld monocular
ATN BlazeHunter 635 LRF
Est. detection
729 m
Maker’s claim
1,830 m
- Sensor
- 640×512
- Pitch · Hz
- 12 µm · 50
- Lens
- 35 mm
LRF · 12.7 oz~$1,895