Hi All, After some advice from some who stalks a lot and posts very infrequently. I have mentioned a few times before that I am an archaeologist. I use my P2 with one of MortarArts 3D printed mounts to shoot archaeological remains. You can check out my work at Gallery One thing people do in archaeology is to use Thermal cameras. You shoot an area from the area and the hopes is any subsurface archaeology like walls and the like, will radiate heat and thus appear on thermal imagery. I am looking at the new Flir Vue Pro, to mount onto the P2. We will definitely go the higher resolution model, and probably the slow video as I just want stills compared to video, so does frame rate matter? But my real question is the lens type. The options are 9, 13 and 19mm. Obviously, the 9mm will give a larger FoV than the 19mm. But I am struggling to think whether it would be worthwhile getting the 9mm and flying lower, or the 19mm and flying higher? Presumably its just ratios ie 9mm at say 20m is the same as 19mm at c.42m. So i am throwing it open to you guys? Anyone used one? Anyone able to suggest whether we should go the 9 or 19? Any advice would be great.