There seems to be a lot of confusion surrounding the term radiommetry, so for those asking, it is my understanding that "at present" (assuming a firmware updated camera) that the current XT's will carry the binary radiometric data, although there is no way for the camera to store that data at present, but understand this should be coming. The radiometric data is currently in a 14bit TIF file which FLIR Tools cannot read, and therefore the images cannot be interpreted by FLIR Tools software at present until FLIR updates the Tools+ software with a newer version. Once that is done it is my understanding that the radiometric data can then be analysed as normal with FLIR Tools, the only caveat being that the "advanced" radiometric functioning will not yet be enabled unless DJI enables this in later batch cameras supplied by FLIR because of the need for FLIR to calibrate the OEM when the advanced code is activated, thus allowing tlinear functioning (primarily).
So for those people thinking of buying the camera (and Ralph will correct me if I am wrong) you "may" receive a radiometric enabled camera, but if you have one of the earlier ones then it may require a firmware update from DJI (unless DJI are not allowing ANY cameras to go out at all unless the update is stable and has been added). As for "advanced" radiommetry, it is probably only going to be relevant to a particular few clients. What I haven't yet established is what effect the lack of "advanced" radiometric functioning has on the interpretation ability when the data is put through FLIR Tools, and im guessing that apart from some averaged out data sets, the impact will be negligible (I hope).
Anyone thinking of buying this camera, just spend a little time thinking about what you intend to use it for before committing to a particular resolution, frame rate, and lens option. The whole purpose of the camera is to give you both quantitative and qualitative data, and you need to look at this before deciding what spec you need. These are not cheap cameras but with the radiometric data they are very capable cameras indeed, but like any tool you need to understand it and what it can do then learn to use it properly.
In most cases radiometric data is used in quantitative analysis where precise temperature distributions need to be measured, and include factors such as emissivity, material data, atmospheric factors etc which can influence such data. This is why radiometric ability is quite important because it gives you the accuracy needed for effective analysis.
Apologies if i am teaching your grandma to suck eggs lol.