As you turn a lenticular image in your hand, the image seems to come to life. Depending on how is are the images interlaced, lenticular images can convey the illusion of 3D and/or video motion.

Flip images are any two images that flip back and forth as you turn the lenticular image.

3D images are an illusion. When the images are interlaced, you'll seem to "walk" around the object as you turn the card.