I am a the camera conversion expert who made the cameras for the viral video How The Sun Sees You. AMA
I have been working with light science for over 20 years. One of the things I do is convert cameras to see in other spectral ranges such as infrared, ultraviolet, high-res, vegetation remote sensing, monochrome and X-Ray. In a recent popular video, the artist used a combination of a regular Canon 60D and a special monochrome UV-Only 60D that I made for him. Converting the camera to monochrome greatly increases the UV sensitivity because the Color Filter Array (CFA) and microlenses on the surface of the sensor block most of the UV. I took the camera apart, removed the ICF/AA stack, sensor coverglass and removed about 6 microns of CFA and microlenses from the surface of the sensor. Then I installed a special UV-Only filter on the sensor and put everything back together.