Abstract: A process for making changes on photoprint film by placing a red coloring mask over spots on a film to be corrected, and with the mask being impenetrable by short wave length light. Next, photographically projecting the film so that the colored spots are not projected, and then photographically projecting another film, with the corrections thereon, and projecting it on the firstmentioned film, all so that the final film is a corrected film accomplished through the use of placing a red coloring mask to prevent projecting of portions of the film to be corrected.