A film image input system is disclosed which can use a film cartridge constructed in such a manner that it requires a small space for storing a developed still photo film and also can protect the film against dust and damage, and also which allows the film cartridge to be mounted into a cartridge mounting part very simply and positively. The film image input system 1 is arranged such that it reproduces the image of the developed still photo film 2 on a video monitor 18. The system uses a film cartridge 6 which comprises a cartridge main body having an outlet opening 7 for sending out the film 2 in the longitudinal direction thereof, a single spool which fixes one end of the film 2 in the longitudinal direction thereof and round which the whole length of the film 2 can be wound, and support means for supporting the spool in such a manner that it can be rotated in both directions. The film image input system includes film supply means 13 which is engageable with the spool of the film cartridge 6 to rotationally drive the spool in a direction to send out the film 2 from the cartridge main body and in a direction to rewind the film back into the cartridge main body. Due to this, the film image can be reproduced by one touch on the video monitor 18.