I am also a 1 on this scale. I can remember faces I'm familiar with pretty vividly, and what happens when reading books is I picture people, probably actors, I've seen before. It's not impossible that I'll re-cast them as I go. An example: In the Blood of Kerensky trilogy of Battletech novels, the character of Dierdre Lear is sometimes played by Tia Carrere, and sometimes by Lexa Doig.