After re-watching season 3 of Babylon 5 I noticed a bit of a discrepancy which I cannot account for.
Some cast members 'headshots' are stationary whereas others turn. There doesn't appear to be any connection with who turns their head and what sequence they are in, or even with what role they take in the show.
Is there a reason for some being turned one way or straight on or not?
Here is the intro for reference:-