Images on film may gradually develop such defects as: dust, spots, scratches, veiling (image disruption), problem of any dominant color, bad joining between the crosses, the image is jumping in the scene frame, the worn or torn perforations, etc.

These problems can be removed first manually and then through digital and technological processing.

A group of specialists work on removing the defects in order to restore the film.

The process of film correction should be attended by a film director, DoP or special commission which can provide creative evaluation of the working process and ensure that the film retains its aesthetic value its authors wanted the film to convey.