In a reproduction method for lens-fitted photo film units, a roll of high-speed photo film of ISO1600 or more is loaded in a new film unit body, so as to produce a lens-fitted photo film unit that is improved in imaging characteristics for a low brightness scene with regard to its background. After being used up, the high-speed film is unloaded for development, and the emptied film unit body is recovered for recycling. In a recycling line, a roll of standard-speed photo film of ISO400 is loaded in a reproduced film unit body, so as to be sold as another type lens-fitted photo film unit that is improved in imaging characteristics in a background area of a high brightness scene.