Pistiolas owns the world's largest private collection of movie cameras - 937 vintage models and projectors. They are neatly arranged, dusted and labeled in his tiny basement, where they cover every inch of wall.
Pistiolas, now 78, started buying cameras at age 15 and never stopped. The basement museum is padlocked and visits are by invitation only.
"When I get a new camera, I feel like a little kid, like I've been given a Christmas present," he says. "The first thing I do is to restore it before I put it into the collection."
"There's a lot of investment there in time, and knowledge, and of course memory. Once you have a few hundred, then you have to remember, 'Have I got this one?'" Grant says. "You can't just buy these in a shop."