Side by side

ATN OTS LT 160 4-8x vs Guide TE421

The OTS LT 160 4-8x runs a 160×120 core at 17 µm behind a 25 mm lens; the TE421 runs 400×300 at 12 µm behind 25 mm. The TE421 has 6.3× the pixels. The TE421 is lighter by 9.4 oz. Approximate prices are ~$999 and ~$949.

How far you can see a person

Make out detailTell what it isSpot itMaker’s claim

ATN OTS LT 160 4-8x160×120 · 17 µm · 25 mm

57 m make out detail92 m tell what it is368 m spot itmaker claims 570 m

Guide TE421400×300 · 12 µm · 25 mm

80 m make out detail130 m tell what it is521 m spot itmaker claims 1,300 m

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Calculated from the sensor's pixel pitch and the lens focal length, for clear air.

Spec	ATNATN OTS LT 160 4-8x	GuideGuide TE421
Published
Sensor	160×120	400×300
Pixel pitch	17 µm	12 µm
NETD	—	25 mK
Refresh rate	60 Hz	50 Hz
Lens	25 mm	25 mm
Base magnification	4×	1.9×
Digital zoom	up to 8×	up to 7.6×
Field of view	6.2° horizontal	11° horizontal
Display	1280x960	800x600 AMOLED
Claimed detection	570 m	1,300 m
Claim basis	human-sized target (ATN product page 625 yd; ATN manual labels it 'Human Detection Range')	unspecified
Run time	10 h	5 h
Battery type	Internal Li-ion	Internal Li-ion
Weight	19.8 oz	10.4 oz
Length	7.7″	6.1″
Laser rangefinder	No	No
Ballistic calculator	No	No
Records video	No	Yes
Wi-Fi	No	Yes
IP rating	—	IP67
Warranty	3 years	5 years (10 years on sensor)
Country of origin	USA	—
Approx. price	~$999	~$949
Derived here
IFOV	0.680 mrad	0.480 mrad
Est. detection	368 m	521 m
Est. recognition	92 m	130 m
Est. identification	57 m	80 m
Claim ÷ estimate	1.5×	2.5×
Derived field of view	6.2°	11°
Pixels per degree	25.7	36.5
Where to buy	ATN →	Guide →

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