Spaced out on YouTube again... These are getting tempting, but I don't know a thing about it. Anyone around here ever done any drone photography?
It is likely due to the white balance. I tried the same with my soldering iron. Just as 850nm-filtered images the response was identical for all three RGB-channels when the NIR image was dominant. If the environment has a lower colour temperature and is used for the white balance it will shift the hot tip colour into blue. Set temperature 350°C: Set temperature 400°C: Set temperature 450°C: All white balanced against the not so hot tube at the bottom, reflecting some of the indoor lig