What camera specification primarily determines the smallest detectable temperature difference?

What camera specification primarily determines the smallest detectable temperature difference?

What camera specification primarily determines the smallest detectable temperature difference? A) IFOV     B) NETD     C) Resolution     D) Frame rate Answer: NETD (Noise Equivalent Temperature Difference) What is NETD? NETD (Noise Equivalent Temperature Difference) is one of the most important specifications in an infrared (thermal) camera. It represents the smallest temperature difference that the camera can detect above its own noise level. Measured in millikelvin (mK) Example: A camera with NETD = 50 mK (0.05°C) can detect very small temperature differences Lower NETD = better sensitivity In simple words: NETD tells you how “sharp” the camera is at detecting tiny temperature variations. Why NETD is the Correct Answer When you are doing thermography, especially in applications like: Electrical inspections Building diagnostics Predictive maintenance You often need to detect very small temperature differences (like 1–2°C or even less). Only NETD directly defines this capability. Why Other Options Are In…