Do I have to buy a camera to be a photography assistant? What cameras do photographers usually use?

It's best to have a camera, have the endurance to withstand the intensity of work and the reprimand of the master, consult modestly and observe attentively, and study hard! The photo studios are basically Fuji, Nikon, Canon, Canon and Nikon. Photography relies on technical equipment, which is just the "pen" of your mind!