Side by side

Zeiss DTI 1/19 vs Zeiss DTI 1/25

The DTI 1/19 runs a 384×288 core at 12 µm behind a 19 mm lens; the DTI 1/25 runs 384×288 at 12 µm behind 25 mm. Approximate prices are ~$1,800 and ~$2,000.

How far you can see a person

Make out detailTell what it isSpot itMaker’s claim

Zeiss DTI 1/19384×288 · 12 µm · 19 mm

61 m make out detail99 m tell what it is396 m spot itmaker claims 1,000 m

Zeiss DTI 1/25384×288 · 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	ZeissZeiss DTI 1/19	ZeissZeiss DTI 1/25
Published
Sensor	384×288	384×288
Pixel pitch	12 µm	12 µm
NETD	≤35 mK	≤35 mK
Refresh rate	50 Hz	50 Hz
Lens	19 mm	25 mm
Base magnification	1.8×	2.5×
Digital zoom	up to 4×	up to 4×
Field of view	14° horizontal	11° horizontal
Display	1280x960 LCOS	1280x960 LCOS
Claimed detection	1,000 m	1,300 m
Claim basis	1.8 m x 0.5 m object	1.8 m x 0.5 m object
Run time	6.5 h	6.5 h
Battery type	Internal Li-ion	Internal Li-ion
Weight	12.7 oz	12.7 oz
Length	6.9″	6.9″
Laser rangefinder	No	No
Ballistic calculator	No	No
Records video	Yes	Yes
Wi-Fi	Yes	Yes
IP rating	IP65	IP65
Approx. price	~$1,800	~$2,000
Derived here
IFOV	0.632 mrad	0.480 mrad
Est. detection	396 m	521 m
Est. recognition	99 m	130 m
Est. identification	61 m	80 m
Claim ÷ estimate	2.5×	2.5×
Derived field of view	13.8°	10.5°
Pixels per degree	27.8	36.5
Where to buy	no verified link	no verified link

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