What is that glow?

This comparison photo of the introductions of Popes Benedict XVI and Francis are impressively different. The camera companies might want to take note: all those people taking pictures and video, and (almost?) none of them are using "camera"s.

I just want to know more about the reporter using an old Nikon 1200/1700mm lens (fascinating lens story). Specifically, want to see his photos (well, and am curious how he got hold of the lens. Would expect it'd cost more than a year's salary for a journalist).