Parallax Camera Mapping // Tutorial

Donut Double Full Piece: vimeo.com/brutonstroube/donutdouble
Project files: dropbox.com/s/f58rp18laprtyyx/CameraProjectionTutorial.zip?dl=0
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James McKenzie - @greatbignerd - instagram.com/greatbignerd
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I've been using this basic technique for a while now and haven't seen a resource that really shows how to do it. Thought I'd share.
I tried to make the project file as small as possible. I put the original master PSD along with PNG and JPEG layers.
I also added in a bonus project file of my favorite one, it's a bit more complicated but same techniques. Enjoy!