Vertigo (or Dolly Zoom) effect using your tripod

Episode 4 of the "Clever uses of a tripod" series.
Episodes from the same series:
Episode 1: vimeo.com/19010440
Episode 2: vimeo.com/19270844
Episode 3: vimeo.com/19544477
Episode 4: this one
Episode 5: vimeo.com/20087880
Episode 6: vimeo.com/32780400
Episode 7: vimeo.com/33910051

Correction: one of the many names is "dolly zoom" not "dolly focus" (en.wikipedia.org/wiki/Dolly_zoom). I was on 4 hours of sleep only so if anything is unclear, ask me.

Extra details and info: alexcican.com/dolly-zoom-effect/

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