I do not think there is anything wrong with the cameraman, because he was only doing justice to the pianist. I feel the piano deserves as much credit as the voice in this recital. And what a voice it is!
The singer has words to convey, besides the notes that she and the pianist have. The audience needs to get that from the performance, too, and this cameraman is not ever letting us see her face. As an instrumentalist and singer, I can tell you that I use my face a lot in expressing the words and music.
