On the N80 - there are custom functions you can set in terms of when a film rewinds. Normally it is default to rewinding automatically at the end of a film. If this setting has been changed, or you want to rewind a film before the end - you need to press two buttons and hold them, at the same time.
The first button is the LCD backlight button next to the LCD, and the second is the flash sync button on the rear of the camera. Both should have a little red film symbol on them. Press them both and hold them, and the film should begin to rewind.
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On the N80 - there are custom functions you can set in terms of when a film rewinds. Normally it is default to rewinding automatically at the end of a film. If this setting has been changed, or you want to rewind a film before the end - you need to press two buttons and hold them, at the same time.
The first button is the LCD backlight button next to the LCD, and the second is the flash sync button on the rear of the camera. Both should have a little red film symbol on them. Press them both and hold them, and the film should begin to rewind.