I found that the website cited on the slide was not too informative. This website seems to highlight the capabilities, accomplishments, and history of the light stage technology a little better: https://vgl.ict.usc.edu/LightStages/
As well as the paper (there was a dead link at the website in the slide): https://vgl.ict.usc.edu/LightStages/SIGGRAPHAsia-2012-Debevec-LightStages.pdf
Thanks for providing a more informative link. I will update my slides.