Thermal Sensitivity is an often overlooked objective specification. The number is small, and seemingly insignificant, but has major implications to image quality and measurement capabilities.
Most uncooled cameras will have sensitivity of around 0.1°C. This is considered average. The better uncooled sensitivities are less than 0.08 and the worst are closer to 0.2°C. Thermal sensitivity has a large impact on image quality as it results in either a crisp (good) or noisy/grainy (bad) image.