Zeiss DTI 1/25 — 384×288 thermal handheld monocular

How far you can see a person

80 m make out detail130 m tell what it is521 m spot it┆ maker’s claim

501002005001k2k5k m

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

Zeiss quotes 1,300 m, 2.5× our figure, because makers usually measure against a person’s full height rather than their width. Why the numbers differ

ZeissHandheld monocular · 384-class

Zeiss DTI 1/25

Approx. price: ~$2,000
Sensor: 384×288 · 12 µm
Lens: 25 mm · 2.5×
Weight: 12.7 oz

No verified retailer link for this unit yet. Only links confirmed to open the right product are published — here’s why.

Best for

Walk-and-scan glassing from a jacket pocket

01Specifications

As published by Zeiss. Sources: zeiss.com DTI 1 instruction manual PDF (technical data table: 25 mm F1.0, 1,300 m for a 1.8 x 0.5 m object, 11 deg horizontal, 2.5x optical, 'maximum digital zoom 1.0x-4.0x' recorded as digitalZoomMax 4 on the same convention as the catalog's DTI 6, 40 row, 384x288 12 um 50 Hz, NETD <=35 mK, 1280x960 LCOS, Li-ion 6.5 h, 175 mm, 360 g, IP65), opticsforce.com SKU 527005-0000-000 ($1,999.99 sale from $2,399.99, sold out on the day read; nature-observation entry model; zeiss.com DTI 1 US page 404s during the site migration so officialUrl left null).