Multi-image is the now largely obsolete practice and business of using 35mm slides (diapositives) projected by single or multiple slide projectors onto one or more screens in synchronization with an audio voice-over or music track. Multi-image productions are also known as multi-image slide presentations, slide shows and diaporamas and are a specific form of multimedia or audio-visual production.

Multi-dynamic image technique is a name given by its Canadian creator Christopher Chapman to a film innovation which shows several images shifting simultaneously on right-angled panes within the overall image, with said panes variously containing a single image or forming part of an image completed by one or a number of other panes. The process was first used in his film A Place to Stand, produced for the Ontario pavilion at Expo 67, held in Montreal.