I feel like I can't remember anyone's face until I've photographed them. Until then it's just a general impression of colouring, the only vivid image is their eyes. When I have a photograph I've taken, especially if I develop it myself, their face becomes a detailed map in my memory. When I remember people I've known for years, I still picture the photos I have seen of them before I actually see them. A good photograph captures the physical attibutes in a way that links them to the person contained therin. It's always the person more than the casing to me, maybe a photograph is the only way to make the outside seem real.