IFOV Calculator for Testo thermal imagers


Please note the minimum distance of 1.64 feet.
A measurement at a distance greater than 164 feet is not recommended. We would be happy to advise you if you have any questions about such a requirement.


Field of view
2 ft
1.12 ft
0.82 ft

IFOVgeo-SR 0.08 in
Smallest recognizable object - with SuperResolution

IFOVmeas-SR 3,2 mm ø
Smallest measurable object - with SuperResolution

Size of the field of view

testo 865
testo 868
testo 871
testo 872
testo 875i
testo 882
testo 883
testo 885
testo 890