We always talk about how light hits a portrait in a certain way, but we never actually see how the light hits a portrait, one second its dark and then in the next second it’s lit. There is no hitting.
Well, here is how light actually hits a portrait. Of course you can not actually film how light travels, you would need a shutter speed of 1/<speed of light>, not to mention the insane triggering system you’d need.
But the folks at SEEC photography have the technology to video how light travels.