Well, not so much photography but manipulation.
I've been messing with this in Photoshop for a couple of days now - lots of fun.
Quote:
Tilt-Shift miniature faking is a creative technique whereby a
photograph of a life-size location or object is manipulated to give
an optical illusion of a photograph of a miniature scale model.
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http://www.tiltshiftphotography.net <<< - includes tutorial