Can you help me with cameras?

What is the difference between digital cameras fil cameras, and how are they alike?
Also, how big is the world's largest camera, and how small is the smallest camera? What are they used for?

whay kind of large camera or smallest camera? like the biggest video camera?

hmm well I dont know what a fil camera is lol but
what do you mean large and small - do you mean the megapixels or the actual size or what?

I got this out of my book; I can't find pictures, or information on them. It says; How big is the world's largest camera? How small is the world's smallest camera? And what are they used for?

yeah, the actual size of the camera.