a process for recording and projecting a three - dimensional visual scene onto a receiving surface from which the scene may be viewed in stereopsis by the unaided human eye . the scene is recorded from right and left view positions laterally separated by a distance of no more than about one inch , and groups of recorded right and recorded left views are alternately projected onto a receiving surface in sequence such that the visual duration of each group varies from a minimum to a maximum time which is generally proportional to the distance of the nearest non - moving object of special regard in the scene from the recording positions and is approximately equal to the visio - psychological suppression rate of the human eyes . to eliminate possible distance variations of right and left view cameras from the visual scene and the need for film editing to align right and left view film frames on a single film strip , the views may be recorded by use of a single lens camera with moving shutter to alternately block right and left half portions of the lens in desired sequence . the central points of focus of the left and right views may be selectively set at different distances during recording to reduce &# 34 ; keystoning &# 34 ; effect of the projected views . the process has application throughout the field of the visual arts , e . g ., both in motion picture and in television , and may be projected from a single projector source . also disclosed is a motion picture filmstrip product .