FujiFilm 120 - Manual (Page 29)

29
Removing film in mid-roll
Press the button with the point of a pen or something similar, and remove the
film.
☞
When rewinding is complete, the exposure counter will read “ ”.
∗
Do not press the button with any object that tapers to a sharp point.
Film cannot be reused once it has been rewound. Do not press the button except when
removing the film for developing.