Black and White
No trick here. This is simply a glass of water on a half black and half white backdrop. Water, just like the lens in our camera, turns our background both upside down and backwards. Large format cameras still see the world this way. The pentaprism built into our digital cameras turns our images upside down and backwards for us, making life a little more comfortable.
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I am an award-winning and internationally published photographer and writer with a passion for all things creative. 
Apparently this is what the esteemed Willis was tlaikn’ ’bout.
You are a very intelligent individual!