On top of that it only works in the VIS range, thanks to the filters in front of the camera sensors - and most of the interesting information is in UV or IR. VI

On top of that it only works in the VIS range, thanks to the filters in front of the camera sensors - and most of the interesting information is in UV or IR. VIS only contains information about a few elements. (see Fraunhofer lines https://en.wikipedia.org/wiki/Fraunhofer_lines https://en.wikipedia.org/wiki/Fraunhofer_lines)