Steve - how do you feel about people taking photos or video of you?
I welcome it. I enjoy the challenge of staying focused when I notice out of the corner of my eye a crowd forming or people filming.
Sometimes I cope by playing with my eyes closed. Violinists have options where to position their eyes: on their bow, on their fingers (rare, but helpful sometimes in practice), out into space, or closed. For example, James Ehnes and Hilary Hahn look at their bows, but Itzhak Perlman and many others play with their eyes closed. I focus on the bow, but when someone is taking a video, I might close my eyes to remove the distractions.