Whatever you film will be projected at 24 frames per second. This means that if you film slower or faster than 24 f.p.s., the motion will speed up or slow down. As a result, most film cameras have several different speeds. For animation purposes, a single frame capability is necessary, since you must film frame by frame. Some 16mm, Super 8, and Regular 8mm film cameras have only 16 or 18 frames per second as their standard speed.
Some video cameras offer frame by frame filming for animation.
Film cameras sometimes allow you to rewind the film, and expose it a second image over the previous image recorded, allowing you to do some neat special effects. Some film cameras also film backwards. It is important not to confuse camera speed with film speed. Camera speed is the frame rate at which the camera photographs, in frames per second. Film speed is the sensitivity of a film to light.