I'd say about half the people who have approached me out of curiosity while using my 4x5 have asked a question under the presumption that I'm making a video. Most recently, in the latest blizzard, some young kids in an Audi doing donuts in the middle of the street thought I was making some "Fast and Furious" film about them.
It gets tiring having to explain what your camera is and what you're doing to every curious george who comes up to you. Ugh. Besides, what movie camera looks ANYTHING like a monorail?