6A43.u2 - Inversion of an Image with a Lens
Demonstrate the flipping of an image when an object or person travels through the focal point of a lens.
Set up a camera and large lens at a fixed distance of ~5 feet apart from each other. Set the camera to focus on the lens. Leave ample walking room behind the lens.
Either a person or a held image can be used for this demo. Simply walk away or towards the lens and the camera will show the image flipping as the person or image travels through the lens' focal point.