To apply a special filter effect to the photographic print of a film unit with a lens by simple constitution.

A situation that the photographic print to which the special filter effect is applied is obtained when photographing is performed by the film unit with a lens 10 is displayed on an outside label 12 and a package bag 21. A special effect filter is arranged in front of an objective lens. A photographer observes an image to which the special filter effect is added through the finder. Print designation data showing that image processing corresponding to the special filter effect observed through the finder is added to original image data is recorded in the magnetic recording layer of the photographic film. In the case of preparing the photographic print from the photographic film on which photographing is performed by the film unit with a lens 10, the print designation data is read out from the magnetic recording layer so as to add image processing for applying the special filter effect to the original image data of the photographic film.