Duration: 0:18

In this video, a set of three lines has been projected through the sunburst beetle's lens. The camera sits behind the lens and is moving backwards away from it. At 00:03, you can see a sharp image of the lines at the distance where the first retina is found. The camera continues to move backwards and the first image becomes fuzzy, but at 00:08, a second image comes into focus; the camera is now at the distance where the second retina sits.