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Calculated from the sensor's pixel pitch and the lens focal length, for clear air. 
How far you can see a person
96 m make out detail156 m tell what it is625 m spot it
501002005001k2k5k m
SightmarkRiflescope · 256-class
Sightmark Shade Thermal 3.5-28x30
- Approx. price
- ~$1,000
- Sensor
- 256×192 · 12 µm
- Lens
- 30 mm · 3.5×
- Weight
- 21.9 oz
Buy from Sightmark
Price and availability on Sightmark’s site may differ.
Best for
A dedicated night rifle for hogs and coyotes inside about 150 yards
01Specifications
As published by Sightmark. Sources: sightmark.com.
- Sensor
- 256×192
- Pixel pitch
- 12 µm
- NETD
- <50 mK
- Lens
- 30 mm
- Digital zoom
- up to 28×
- Field of view
- 6° horizontal
- Display
- 1280x720 LCOS
- Run time
- 4.4 h
- Battery type
- CR123
- Weight
- 21.9 oz
- Length
- 5.6″
- Records video
- Yes
- Approx. price
- ~$1,000
02Pros and cons
From the published specs, not owner reports.
For it
- Takes CR123 batteries you can swap in the field
- ~$1,000, well under the ~$3,000 typical for riflescopes here
Against it
- Only 4.4 h of battery
- Short 30 mm lens: a wide view, but less reach than a 50 mm scope
- No rangefinder, so you judge distance by eye
- Entry-level 256×192 sensor, with less detail than a 640
- Narrow 5.9° view, so a moving animal is hard to find
- No waterproof rating published
03Compare the 3.5-28x30
04Related units
SightmarkRiflescope
Sightmark Shade Thermal 2-16x15
Est. detection
313 m
Maker’s claim
not published
- Sensor
- 256×192
- Pitch · Hz
- 12 µm · —
- Lens
- 15 mm
20 oz~$800
AGM Global VisionRiflescope
AGM Rattler V2 25-256
Est. detection
521 m
Maker’s claim
1,250 m
- Sensor
- 256×192
- Pitch · Hz
- 12 µm · 50
- Lens
- 25 mm
Swappable battery · 17.3 oz~$875
AthlonRiflescope
Athlon Cronus ATS Pro 25P-250
Est. detection
521 m
Maker’s claim
not published
- Sensor
- 256×192
- Pitch · Hz
- 12 µm · —
- Lens
- 25 mm
17.8 oz~$937