OK cool.... I once watched a documentary on NatGeo wild and they were filming a Pride of Lions and there-on I learnt they were making use of an invisible light which they mounted on the car and they were using a particular special Camera to film them at night whereas the light was invisible to the naked eyes and the lions too weren't aware they were being filmed because they weren't seeing any light but with that particular special camera ever where was as clear and bright like daylight.... So I was wondering if you've heard or come across that type of Camera and the invisible light???