KT-140, KT-150, KT-160, KT-160A, KT-384: What is the maximum distance for temperature measurements with a thermal imaging camera?

Theoretically, the distance is infinite, but in Earth conditions the stratosphere is the limit (several kilometres), hence the cloudless blue sky is “colder” than the clouds.

However, other parameters must be also considered, e.g. minimum size of the object being measured in terms of measuring distance, the resolution of camera matrix and the lens used.

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