In the videos you can see a rotatory optical system (ROS) made of (50?) hexagonal optical elements with a thickness of 10-15 cm. As the ROS rotates, in some positions, full (or partial) images of a man behind this ROS are seen in some elements. However, these images move from side to side as the ROS rotates. Moreover, around the "front position", the magnification of each element is negative and lesser than -1 but if the ROS turns 180 degrees ("rear position") the magnification is positive and lesser than 1. Apparently, there is no difference between the front and rear surfaces.
Video: https://www.facebook.com/36degres/videos/902778800633812/
or: https://pin.it/nctRIpq
Carlos
Considering how picture moved in positive and negative lenses cases, this looked more or less properly if we have such an array of Fresnel lenses rotating.
What doesn't seem to be possible is a system that is positive in one orientation and negative in the other, as this would break ray symmetry. Geometrical optics wouldn't allow it.
My guess would be 2 optical systems and video editing. Or even fully rendered scene.
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