There was no information on what camera they used, but my N80 and N75 give a warning if the film is not advancing properly. On older cameras the advice on watching the rewind knob is good. The two cameras that I indicated you just have to pull the film over to the mark and close the back. The N75 winds the film forward and rewinds back into the cassette as you take pictures. My Minolta X700 you have to thread it to the take up spool then advance. The newer cameras have windows so you can see that there is film in the camera. I too have made the mistake of thinking I had film in the camera when I didn't. Older Minolta SR-T101 didn't have that window so watch that rewind knob. Another mistake of old was forgetting to set the ISO dial and exposing at the wrong film speed. I think that the Nikon N80 was one of the best medium priced film cameras made. It had auto wind, and rewind, a great Matrix exposure system. The N75 was also a good camera but didn't have manual ISO only DX.