A lenticular print is composed of two parts: (1) the front side clear columna lens array, orientated vertically or horizontally, on top of and through which is seen (2) the underlying interlaced print. 

The lenticular lens projects the print’s spliced image strips at different angles from its surface. When each eye is presented with a slightly different viewpoint/image of the same scene, similar to how our eyes view the world due to their horizontal separation, then one can appreciate depth (3D). Alternatively, if the exact same image is presented to both eyes, and then refreshed with a new set of images as the angle of view changes relative to the print, then Motion effects are appreciated (Flip, Animation, Video, Morph, or Zoom).