Albert effect is a photographic process that produces a reversed or positive image from an initially exposed frame of film. In this technique, the film is treated with a dilute solution of chromic acid and then re-exposed to light. During development, the grains of the emulsion that were not affected by the original exposure darken, creating a positive image that is the inverse of the original negative. The Albert effect was historically used in experimental and creative photography to achieve unusual visual effects and remains of interest to photographers exploring alternative photographic processes and artistic darkroom techniques.