Side by side

Zeiss DTI 6/40 vs Zeiss DTI 6/20

The DTI 6/40 runs a 640×480 core at 12 µm behind a 40 mm lens; the DTI 6/20 runs 640×480 at 12 µm behind 20 mm. The DTI 6/20 is lighter by 2.3 oz. Approximate prices are ~$4,800 and ~$4,500.

How far you can see a person

Make out detailTell what it isSpot itMaker’s claim

Zeiss DTI 6/40640×480 · 12 µm · 40 mm

128 m make out detail208 m tell what it is833 m spot itmaker claims 2,000 m

Zeiss DTI 6/20640×480 · 12 µm · 20 mm

64 m make out detail104 m tell what it is417 m spot itmaker claims 1,000 m

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

Spec	ZeissZeiss DTI 6/40	ZeissZeiss DTI 6/20
Published
Sensor	640×480	640×480
Pixel pitch	12 µm	12 µm
NETD	≤35 mK	≤35 mK
Refresh rate	50 Hz	50 Hz
Lens	40 mm	20 mm
Base magnification	3×	1.5×
Digital zoom	up to 10×	up to 10×
Field of view	11° horizontal	22° horizontal
Display	1024x768 AMOLED	1024x768 AMOLED
Claimed detection	2,000 m	1,000 m
Claim basis	unspecified	1.8 m x 0.6 m object
Run time	6.5 h	6.5 h
Battery type	—	Removable pack
Weight	26.6 oz	24.3 oz
Length	9″	9.1″
Laser rangefinder	No	No
Ballistic calculator	No	No
Records video	Yes	Yes
Wi-Fi	Yes	Yes
IP rating	—	IP65 / IP67
Approx. price	~$4,800	~$4,500
Derived here
IFOV	0.300 mrad	0.600 mrad
Est. detection	833 m	417 m
Est. recognition	208 m	104 m
Est. identification	128 m	64 m
Claim ÷ estimate	2.4×	2.4×
Derived field of view	11°	21.7°
Pixels per degree	58.4	29.4
Where to buy	no verified link	Amazon →

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